Singer Building

Singer Manufacturing Company

Company type	Private
Industry	Manufacturing, Office headquarters
Founder	Frederick Gilbert Bourne
Headquarters	New York City , United States
Key people	Frederick Gilbert Bourne (leader)
Products	Sewing machines (implied by company name)

The Singer Building—also referred to as the Singer Tower—stood as a prominent office skyscraper situated at the northwest intersection of Liberty Street and Broadway in Lower Manhattan, New York City. It functioned as the headquarters for the Singer Manufacturing Company, commissioned by its leader Frederick Gilbert Bourne and designed by architect Ernest Flagg over several stages between 1897 and 1908. The architectural style blended features from both Beaux-Arts and French Second Empire traditions.

This edifice was composed of four main parts: the original 10-story Singer Building located at 149 Broadway (constructed 1897–1898), the adjacent 14-story Bourne Building along Liberty Street (built 1898–1899), and subsequent expansions that created a 14-story base surmounted by a 27-story tower. The exterior showcased a combination of brick, stone, and terracotta materials, crowned with a dome featuring a lantern. While the tower rested on caisson foundations, the base was supported by shallower footings. Originally relying on load-bearing walls, the structure was later fortified with a steel framework. Upon completion, this 41-story tower included an entrance lobby adorned with marble, sixteen elevators, roughly of rentable office space, and an observation deck.

Standing at , the Singer Tower held the title of the tallest building worldwide from 1908 until 1909, when it was overtaken by the Metropolitan Life Insurance Company Tower. The building’s base covered the entire parcel of land, whereas the tower's floors occupied only about one-sixth of that footprint. Despite its architectural significance, the Singer Building was dismantled between 1967 and 1969 to make room for One Liberty Plaza, which provided substantially more office area. At the time of its demolition, it was recognized as the tallest voluntarily razed building until surpassed by 270 Park Avenue in 2019.

Architecture

Positioned at the northwest corner of Liberty Street and Broadway within Manhattan’s Financial District, the Singer Building neighbored the City Investing Building immediately to its north. The nearly rectangular site measured approximately on Broadway by on Liberty Street. Completed in 1908, this complex consisted of four distinct segments: the initial Singer and Bourne buildings, an annex addition, and the towering structure above. All components were conceived by architect Ernest Flagg under commission from Frederick Bourne, then head of the Singer Manufacturing Company.

The design incorporated stylistic influences from both Beaux-Arts and French Second Empire style, with architect George W. Conable responsible for developing plans and detailed drawings. Construction management was handled by an architectural firm with engineering direction provided by Otto F. Semsch, mechanical consulting by Charles G. Armstrong, and steel structure engineering by Boller & Hodge. More than forty firms contributed to construction efforts, with nearly one hundred contracts awarded directly by the owners without employing general contractors.

When completed in 1908, the tower’s roof reached a height of , topped by a flagpole extending total elevation to . At that time, it was recognized as the tallest building globally and remains notable as the tallest skyscraper ever demolished. Initially, "Singer Tower" designated only the tower section, while "Singer Building" referred to part of the base; however, by mid-20th century usage had shifted so that "Singer Building" applied to the entire structure.

Form

The building's footprint covered the entire parcel and included the initial 10-story structure (later extended to 14 floors) alongside the 14-story Bourne Building annex. The original Singer Building, situated on the southeastern section of the lot, measured approximately 100 feet along Broadway and 150 feet on Liberty Street. Positioned on the southwestern segment, the Bourne Building had a depth of 58 feet and a frontage close to 100 feet on Liberty Street. Between 1906 and 1907, expansions pushed the original Singer northward and extended the Bourne westward. Both structures ultimately reached an approximate height of 14 stories.

Rising from the northwest corner of this base was a 41-story tower, designed with a square floor plan measuring roughly 75 by 75 feet. Including its dome and lantern, this tower equated in height to a 47-story building. Set back about 30 feet from Broadway, it occupied only one-sixth of the entire lot. A narrow gap separated it from the neighboring City Investing Building, which was built at the same time. Due to limitations imposed by column sizes, support columns for the tower were located in the northern portion of the lot rather than directly above the original base structure. Upon completion, the tower's slenderness ratio of seven to one established a new record.

Facade

The exterior combined materials such as red brick, light-hued stone, and terracotta, with around 733,000 square feet of terracotta applied to both external surfaces and interior partitions. Approximately five million bricks were used throughout the project, including one million within the tower itself. The construction also incorporated 1,500 cubic feet of North River bluestone and 4,280,000 pounds of limestone—mostly installed above the 33rd floor. Principal contractors responsible for these materials included John B. Rose Company for brickwork, Martin P. Lodge for bluestone, J. J. Spurr & Sons for limestone, and New Jersey Terra Cotta for terracotta elements.

For ornamental detailing, about 101 short tons of sheet copper were utilized. Whale Creek Iron Works provided decorative iron components, while ornamental bronze was supplied by Jno. Williams Inc. The building contained roughly 85,203 square feet of glass surfaces, with approximately ten percent used internally. Notable decorative features included eight arches crowning the tower’s exterior.

Base

The base of the original Singer Building was clad in both stone and brick: its lowest two floors faced with stone; a third floor featuring balconies on both facades; four stories combining brick walls with windows framed in stone; a seventh story clad in stone with a balcony serving as a cornice; and an eighth story composed of brick. The uppermost floors were topped with an ornamental copper-and-slate roof incorporating dormer windows and stone chimneys. The principal entrance on Liberty Street was richly decorated with sculptures and ornamental details. Adjacent to this, the Bourne Building displayed Indiana Limestone on its first two stories with red brick above; window mullions and railings were enhanced with ironwork decorations.

Following alterations made between 1906 and 1907, the main entrance relocated to Broadway on the eastern facade. This new entrance consisted of a three-story semicircular arch framed by a two-story architrave inscribed with "Singer." Above this was a fanlight divided by five vertical mullions accompanied by a bronze grille measuring approximately 13 feet wide by 24 feet tall.

These renovations introduced rusticated North River bluestone facing across the first three stories and expanded the Broadway facade from two bays to five by adding four stories between the seventh floor and what had been the original three-story roofline. From floors four through ten, vertical bays were separated by pilaster strips topped with pediments above sixth-floor windows. The eleventh and twelfth floors featured two rows of smaller windows; those on the eleventh floor were spaced between brackets supporting an iron balcony on the twelfth floor. The top two levels included dormer windows projecting from a mansard roof clad in slate shingles on sloped sections and glazed tiles covering flat areas.

Tower

The exterior of the Singer Tower showcased brickwork that varied in thickness, being thinner near the top and thicker at the base. Each side was divided into five bays, each measuring wide, featuring 36 windows on every floor. The deep red brick was complemented by North River bluestone accents, including trimmings, copings, courses, and windowsills. Vertical limestone piers segmented the facade into three parts, with smaller windows lighting the outermost bays. Solid masonry at the corners concealed diagonal steel supports. The tower incorporated cast-iron balconies and fascias alongside wrought-iron jambs and mullions, drawing inspiration from the Little Singer Building located at 561 Broadway.

Horizontal belt courses encircled the tower above the 17th, 18th, 23rd, 24th, 29th, and 30th floors, while terracotta balconies adorned all sides at the 18th, 24th, and 30th levels. Iron balconies extended outward at intervals of seven stories. Near the summit, vertical stone bands created an elongated arch that mirrored the dome’s shape. On the 36th floor, decorative balconies cantilevered approximately outward on each side, supported by brackets positioned on the 35th floor. Corner windows on the 36th and 37th floors were framed with stone architraves; elaborate stone arches surrounded central bays from floors 36 through 38; and oval windows appeared at each corner of the 38th floor. These elements were topped by a substantial stone cornice.

Atop the tower sat a dome covering its upper three stories, crowned by a lantern with a base measuring across and rising tall. The dome’s roof was clad in slate, while its ornamentation, dormers, and lantern were sheathed in copper. In subsequent years, trapezoidal skylights were replaced by dormer windows. The lantern’s peak reached above ground level; a steel flagpole extended another above it, resulting in a total height of from ground to tip. The flagpole itself measured , anchored firmly within the tower’s structure. At night, the exterior was illuminated by some 1,600 incandescent lamps and thirty projectors visible from up to away.

Superstructure

Originally, load-bearing walls supported the Singer Building at 149 Broadway, whereas the Bourne Building annex at 85–89 Liberty Street featured an internal steel skeleton. Between 1906 and 1908, the original Singer Building was retrofitted to incorporate a steel skeleton framework. Overall, the building contained approximately 850 steel columns, mostly arranged in two-story segments; however, one- to three-story segments were used in basements, first floor, and floors 14 through 16. The mansard roof of the base—excluding the tower—was supported by rafters. Structural steel was supplied by Milliken Brothers Inc.

The Singer Tower extension constructed between 1906 and 1908 employed a steel skeleton weighing . Columns were spaced apart with diagonal bracing only present at corners to treat them as square prisms. Internally, a separate framework housed central elevator shafts linked to tower corners through longitudinal beams. A girder on the fourth floor supported corner columns; altogether, 36 columns rose from basement through the tower. Four pillars stood at each corner of the tower alongside six additional columns within elevator shafts. Each truss spanned two stories vertically enabling columns and braces to function as cantilevers resisting wind forces. Braces on north and south sides consisted of 11 panels each; east and west had ten panels apiece. Four central columns bore support for the dome atop the tower.

Two boom derricks facilitated erection of the superstructure: one with a capacity of , featuring a mast and boom that lifted steel beams from ground level to a platform on the 17th floor; another located on that floor with capacity assembled steel for the tower above. Typically, transfer of steel components took less than five minutes per lift. German steel was selected for framing due to Flagg’s preference for German craftsmanship over American alternatives. The superstructure was engineered to endure wind pressures up to , even though winds rarely exceeded during construction in this area.

Internally, approximately of Portland cement and of concrete subflooring were utilized. Floors generally incorporated terracotta flat arches about deep; many internal partition walls also consisted of terracotta blocks.

Foundation

Beneath multiple layers of quicksand, hardpan, rock, clay, and soil, the foundational bedrock was located at a depth of . The groundwater sat approximately below the Singer Building. Ground conditions were inconsistent, featuring both dense and loose hardpan zones, while saturated soil under the water table made standard cellar excavation impractical. To address this, The Foundation Company employed pneumatic caissons for the foundation work, excavating soil and subsequently filling these caissons with concrete to create supporting piers.

Each caisson pier was engineered to bear a load of . Steel girders were arranged in a grid pattern atop these piers. Because the tower addition incorporated wind-bracing elements, certain piers experienced upward forces exceeding their own weight. To mitigate this, eyebars extending as far as were embedded within the concrete of 10 caissons—a proprietary technique developed by Flagg's office that resulted in costs more than double those of a typical foundation for a building of comparable size. Although initially intended to reach only , excavation extended the caissons down to the hardpan layer.

The original structure rested on grillages positioned beneath sidewalk grade; these foundations were strengthened to accommodate the tower addition. In total, 54 steel columns supported by concrete piers carried the combined load of both the Singer Building and its tower extension.

Interior

Designed with fire resistance in mind, the Singer Building’s tower primarily featured concrete floors, with wood usage limited to doors, windows, railings, and decorative accents. The base incorporated more wooden elements, especially in floors, windows, and doors. All staircases were constructed from cast iron. Metal trim painted to imitate wood was applied throughout interiors, including on doors; genuine wooden furnishings were reserved for the Singer Company’s principal offices on the 34th floor. Walls and ceilings were embellished with ornamental plasterwork crafted by H. W. Miller Inc. The building provided roughly of rentable office space.

Water was supplied from New York City’s system and passed through ammonia coils and dual filtration before entering suction tanks. Seven internal water tanks met an anticipated demand of per hour. For the tower section, three tanks located on the 29th, 39th, and 42nd floors held a combined volume of 15,000 gallons. The base was served by one 5,000-gallon tank in the Bourne Building and three tanks totaling 18,000 gallons within the original Singer Building. This arrangement facilitated distribution of cold, hot, and iced water throughout the premises. Hot water was generated by two basement heaters and supplemented by a refrigeration plant equipped with pumps and an ice-making system capable of producing between 500 and 1,000 pounds daily.

Heating was provided via a vacuum steam system; however, indirect steam heating was utilized specifically in the ground-floor lobby and basement vaults. Approximately 1,600 steel radiators were installed across all floors, with decorative screens enclosing those in prominent spaces such as banking rooms and Singer offices on the 33rd and 34th levels. Boilers not only supplied heat but also powered electrical generation for the entire building. Initially, boilers located in both the Bourne and original Singer structures had a combined capacity of , driving generators that produced . After the expansion completed between 1906 and 1908, newer boilers totaling along with generators rated at replaced these earlier units. A shared steel smokestack situated at the northwest corner served both the Singer Building and its neighboring City Investing Building.

Lobby

Entered from Broadway, the lobby showcased Pavonazzo marble alongside nearly 42 short tons of bronze detailing. Architectural critic Christopher Gray of The New York Times characterized the space as radiating a "celestial glow." The ceiling was upheld by two rows of eight square marble piers adorned with bronze beadwork. Each pier featured a combination of Pavonazzo marble bordered by Montarenti Sienna marble and displayed large bronze medallions illustrating the Singer Company's emblem or sewing-related imagery such as needles, threads, and bobbins. Above these piers, pendentives embellished with gold leaf supported glazed plaster domes that were initially lit by flat amber glass panels, which were later updated with contemporary lighting fixtures.

On either side of the main entrance, staircases ascended to a balcony and descended to the basement; the south wall contained stairs leading to the original Singer Building. These staircases incorporated cast and wrought iron elements with bronze handrails and newel posts. Elevators were grouped along the northern wall, each equipped with doors made up of four bronze leaves. Overlooking the lobby was a balcony trimmed in bronze, accessible via Italian marble stairs at the rear that split into two flights connecting to both sides of the balcony. Positioned centrally on these stairs was a master clock that regulated all clocks throughout the building. The lobby frequently functioned as a gathering spot.

Two additional entrances on Liberty Street—serving the original Singer Building and Bourne Building—linked to the main lobby from the north. Retail spaces occupied portions of the ground floor as well.

Basement

The basement accommodated the boiler room and mechanical plant, containing five boilers alongside five generators. Boilers were situated beneath the building’s western section, while an engine room occupied a central location. The southeastern corner housed a pump and machine room as well as offices for the chief engineer, electrician, and a waste paper storage area. A compressor room was located in the northeastern corner.

A corridor extending eastward from the basement led to 10 safe deposit vaults spanning roughly 10,000 square feet. Managed by the Safe Deposit Company of New York, these vaults contained thousands of secure boxes protected by multi-layered steel walls. The largest vault door weighed more than 16 short tons. Adjacent to these vaults were three committee rooms designated for company use.

Other floors

Office spaces on floors 2 through 13 were arranged along a T-shaped corridor set away from the elevator banks. These levels featured ceilings painted in white watercolor tones, light tan walls, oak trim and partitions, along with decorative moldings, averaging about 40 offices per floor.

The tower floors were organized in a U-shaped plan encircling central elevators and emergency stairwells. Aside from elevator shafts and restrooms, partitions were sparse, resulting in an average of 16 offices per floor. Ceilings were coated in ivory paint, walls in olive green, and metal trims designed to resemble wood grain. The Singer Company’s principal offices occupied floors 33 through 35, richly decorated with ornamental plasterwork.

The highest publicly accessible point was the lantern balcony situated 564 feet above curb level. Opened on June 23, 1908, visitors paid $0.50 to enjoy views extending up to 30 miles. Following two fatal incidents involving jumps from this deck—which earned it the grim nickname "Suicide Pinnacle"—the observation area was closed by the 1930s. Access between the deck and lantern was provided via steep ladders and stairways.

Elevators

The finished structure was equipped with a total of 16 elevators, including 15 electric traction elevators supplied by Otis and one electric-drum elevator. Within the tower, nine elevators operated: eight originating from the lobby—four designated as "local," serving floors between the lobby and the 13th floor (with two extending to the basement), and four "express" elevators reaching higher levels (three up to the 35th floor and one to the 40th). Additionally, a "shuttle" elevator connected floors 35 through 38. This lag was partially due to New York's restrictions against metal-frame construction until 1889. The completion of the American Surety Building in 1895—a 20-story structure utilizing skeleton frame technology—marked New York’s entry into this building method. The early decades of the 20th century saw a significant rise in architecturally sophisticated skyscrapers in New York, which scholars Sarah Landau and Carl Condit have termed "the first great age" of skyscraper development.

Isaac M. Singer and Edward C. Clark established I. M. Singer & Company in 1851, which evolved into Singer Manufacturing Company by 1865. Later in the 19th century, the company ventured into real estate development, commissioning Henry Janeway Hardenbergh for residential projects such as the Dakota. During the 1890s, under Alfred Corning Clark and president Frederick Bourne, Singer partnered with architect Ernest Flagg and expanded its presence into European markets.

Original building and annex

In February 1890, Singer Manufacturing purchased parcels at 151–153 Broadway followed by acquisitions at 149 Broadway and 83 Liberty Street—three lots combined at a cost exceeding $950,000 (), previously occupied by low-rise structures. Ernest Flagg was commissioned to design a new headquarters: a ten-story stone-and-brick edifice featuring banking spaces on lower levels, rental offices in the midsection, and Singer company offices on upper floors. Although construction encountered a setback due to flooding caused by a broken water main in June 1897, work was completed by early 1898.

Prior to completing this building, Bourne acquired three five-story structures at 85–89 Liberty Street in December 1897 on an adjacent site. Flagg designed a neighboring fourteen-story Bourne Building with an estimated cost of $450,000. Bourne secured ownership in September 1899, and the annex was finalized that same year. By the year 1900, both structures were fully occupied. Among prominent occupants were attorney Augustus Van Wyck, the Trust Company of America, and boiler manufacturer Babcock & Wilcox, which maintained office space there for over forty years.

Expansion

Additional property acquisitions took place in the early 1900s. In 1900, Bourne secured an iron-front structure located at 155 and 157 Broadway, providing approximately 50 feet of frontage. Two years later, in 1902, the company added 163 Broadway to its holdings, gaining another 25 feet of frontage. The following year, in 1903, the five-story building at 93 Liberty Street was purchased, contributing an extra 50 feet of frontage. By 1905, the Singer Company had effectively consolidated control over most of the block bounded by Broadway and Liberty Street; the initial Singer Building formed an L-shaped footprint extending westward and northward from the northwest corner of Broadway and Liberty Street.

Tower construction

Concurrent with land acquisitions, architect Ernest Flagg was engaged in 1902 to draft plans for a second expansion of the Singer Building. By early 1903, designs were progressing for a skyscraper exceeding 35 stories—the tallest structure globally at that time. In February 1906, the Singer Manufacturing Company announced intentions to erect a tower that would claim the title of the world's tallest building. Revised blueprints submitted in July 1906 incorporated enhancements to improve wind resistance. The company intended to occupy floors above the 31st level while leasing out lower floors to tenants, anticipating rental income around $250,000 annually based on $3 per square foot.

Engineering contracts were awarded prior to official plan approval in August 1906. After conducting borehole analysis to assess soil conditions, excavation commenced in September 1906 and foundation work was finalized by February 1907. A timber platform was constructed to streamline material handling during excavation phases. Additionally, a temporary elevator was installed to facilitate movement during superstructure assembly.

City inspectors identified code violations due to the use of concrete flooring instead of required hollow-tile floors, necessitating replacement of some arches. By August 1907, the steel framework had reached a height of 36 stories, surpassing the Washington Monument's stature. That same month, Prince Wilhelm of Sweden toured the site up to the 29th floor during construction. The building was topped out on October 4, 1907, marked by hoisting a flagpole atop the structure. Interior finishing work continued despite strong winds; notably, no major accidents occurred during this period. In February 1908, a minor fire on the 40th floor was reported as "the highest fire ever recorded in any building worldwide."

Base expansion

In late 1905, Flagg was commissioned to design extensions westward from the Bourne Building and northward from the original Singer Building, connecting both structures internally. The original Singer Building was expanded vertically to fourteen stories, while the Bourne Building’s uppermost floor was extended upward to align with its lower levels. Plans for these expansions were filed between late 1906 and early 1907.

During construction of the new tower, additional foundations were installed beneath the original Singer Building for reinforcement. In June 1907, the top three floors—including the mansard roof—were temporarily removed to allow insertion of four new stories above what was formerly the seventh floor; this effectively transformed the old eighth floor into the new twelfth story. This modification added approximately 40,000 square feet of usable office space without disturbing tenants occupying lower floors. Structural columns were erected from basement through eleventh floor at both front and rear elevations to support the elevated roofline. Floors were reconfigured with steel columns replacing previous load-bearing walls. The northward extension added three bays along Broadway designed to match the existing architectural style.

Within the Bourne Building, three existing elevators were replaced by four new ones, which required complete framing reconstruction around former elevator shafts. The main entrance of the original Singer Building was removed and replaced with a small window opening.

Completion and Subsequent Utilization

The tower welcomed visitors on May 1, 1908, with a celebratory banquet held soon after to honor the construction team. Its observation deck opened to the public on June 23. The Singer Building rapidly became a symbol of Manhattan, distinguished by its illuminated tower, and held the title of the world's tallest building for a year, surpassing Philadelphia City Hall until the 700-foot Metropolitan Life Insurance Company Tower claimed the record. Despite its height achievement, the Singer Building was shorter than the 1,063-foot Eiffel Tower.

During its initial months of operation, two fatal elevator incidents occurred within the building. In 1911, aviator Harry Atwood performed a publicity flight circling the tower. Prominent occupants included the Chatham and Phenix National Bank, which relocated its headquarters there in 1916. The building’s vaults were originally utilized by the Safe Deposit Company of New York. In 1921, it became New York City’s first office skyscraper to switch its steam plant fuel source from coal to oil.

The Singer Company put the property on the market in 1921 with an asking price of $10 million. By 1925, an $8.5 million cash transaction with Utilities Power and Light Corporation was announced but ultimately did not materialize. That same year, a subbasement vault was constructed for the merged Chatham and Phenix National Bank and Metropolitan Trust Company, accompanied by renovations on three lower floors dedicated to banking operations.

Over time, the Singer Company made only minor modifications; The New Yorker praised this restraint, remarking that they were "wise enough to leave magnificence alone." The lighting system underwent at least five upgrades, copper decorative elements were restored in 1939, and both the flagpole and roof cresting were removed early in 1947. An electrical fire in 1949 prompted evacuation but resulted in a single injury. By the late 1950s, automatic elevators were installed to comply with updated regulations, while some offices received air conditioning systems that preserved original thermostat controls. Revolving doors were replaced with conventional entrances by 1958, and toward the end of its lifespan, ground-floor retail spaces were divided into smaller units.

Demolition

By 1958, marking its half-century milestone, the Singer Building had fallen to become only the sixteenth tallest structure in New York City. In 1961, Singer announced intentions to sell the building and move operations to 30 Rockefeller Plaza. Records indicate that Iacovone Rose initially acquired the property before quickly transferring ownership to Financial Place Inc. Developer William Zeckendorf subsequently purchased it but failed in efforts to attract the New York Stock Exchange as a tenant. The mid-1960s construction of the World Trade Center nearby significantly boosted Lower Manhattan real estate values. In 1964, United States Steel acquired both the Singer and City Investing buildings with plans to demolish them for a new headquarters tower rising 50 or 54 stories.

Although established in 1965 following several prominent demolitions, the New York City Landmarks Preservation Commission (LPC) never granted landmark status to the Singer Building—a designation that would have prevented its destruction. LPC executive director Alan Burnham explained that landmarking would have compelled the city either to purchase or find a buyer for the property. Despite its iconic status, preservation campaigns were unsuccessful; demolition commenced by September 1967 amid protests from groups like Architectural Forum and other advocates who suggested preserving the lobby inside the forthcoming U.S. Steel Building. The teardown was completed by early 1969.

The U.S. Steel Building—later known as One Liberty Plaza—was finished on this site in 1973, providing roughly 37,000 square feet per floor—nearly nine times larger than each floor of the Singer Building—and at least double the total interior space of both previous structures combined. At its demolition, the Singer Building held the record as the tallest intentionally razed building until surpassed by the collapse of the World Trade Center during the attacks on September 11. It retained this distinction until demolition began on Midtown Manhattan’s 270 Park Avenue in 2019.

In recent times, references to the Singer Building have appeared within the baseless Tartaria conspiracy theory, which erroneously cites it as proof of a lost civilization.

Impact

Flagg, who was critical of the prevailing skyscraper designs, viewed this project as an opportunity to advocate for reform in tall building construction by demonstrating how such structures obstructed sunlight from reaching adjacent streets. Up until 1904, the architectural community generally restricted buildings to a maximum of ten stories. Flagg contended that edifices exceeding (10–15 stories) should feature setback towers that cover no more than one-quarter of the plot area. He observed, "Our rooms and offices are becoming so dark that we must use artificial light all day long." The Singer Building's architectural approach embodied Flagg’s urban planning principles and played a role in shaping New York City's 1916 Zoning Resolution, which introduced mandatory setbacks for many skyscrapers.

New York Times architectural historian Christopher Gray likened the Singer Building’s tower to "a bulbous mansard and giant lantern." Architectural commentator Jason Barr described it as a "transitional building" in the evolution of skyscraper design. Landau and Condit commended it as "an aesthetic triumph" that showcased the sculptural potential of steel-framed skyscrapers. In 1957, Architectural Forum praised it as "a very coherent, virile piece of design," and shortly before its demolition, noted it was "distinguished for more than mere height." Ada Louise Huxtable reflected that "The master never produced a more impressive ruin than the Singer Building under demolition." In contrast, early 20th-century coverage by The New York Globe disparaged it as an "architectural giraffe," cautioning that its extreme height might impede fire rescue operations on upper floors.

See also

• History of the world's tallest buildings