Assembly OSM
New York, US · Founded 2018 · Delaware corporation · 9 known investors
Assembly OSM develops modular construction technology and methods to make urban development scalable and sustainable, enabling rapid high-rise building assembly.
Also known as Assembly · Assembly OSM
Founders & leadership
Assembly OSM was founded in 2018 by Bill Sharples and Chris Sharples.
Board
Investors · 9
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Reported raises · per SEC filings
Form D private placements$64.4M disclosed across 1 round · 2022
▶$64.4MraisedJul 2022 · 92 investors · Other TechnologyRule 506(b)
- Andrew StaniforthExecutive Officer, Director
- Robert StavisDirector
- William SharplesDirector
- Kieran MaraDirector
- Amount sold
- $64.4M
- First sale
- Apr 2022
- Incorporated
- Corporation, Delaware, 2018
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Company profile
researched Aug 2026Assembly OSM is a New York-based offsite/modular construction company focused on making urban development scalable and sustainable. It has introduced what it calls a "post-modular" construction model, an approach to producing and erecting building components offsite that has been characterized in press coverage as allowing a high-rise to be stacked in a single day.
The company's disclosed work includes a demonstration build referred to as Prototype Alpha and residential projects at 147 St. Felix and 247 E 117th Street in New York. Its East Harlem project is a modular Passive House new construction that received predevelopment financing announced by NYCEEC and a NYSERDA Buildings of Excellence Award. Assembly OSM has also joined the International WELL Building Institute's WELL for Residential program.
Business model
Assembly OSM operates as a full-stack offsite construction company, developing its own building system and construction method and applying it to urban residential projects such as 147 St. Felix and 247 E 117th Street, alongside a Prototype Alpha demonstration build.
Latest developments
In 2024 the company's East Harlem project won a NYSERDA Buildings of Excellence Award and received predevelopment financing announced by NYCEEC, and the company was featured in coverage by The Real Deal and Freethink discussing its high-rise assembly method and the housing crisis.
▸Full profile — market position, technology, go-to-market, geography
Market position
Assembly OSM has been cited by Andreessen Horowitz among full-stack startups in American Dynamism and covered by construction and real estate press as a modular construction startup addressing urban housing delivery.
The company positions its "post-modular" construction model as distinct from conventional modular building, with press coverage highlighting the speed of assembly of high-rise structures and its energy-efficient Passive House and WELL-aligned residential work.
Technology
An offsite manufactured building system marketed as "post-modular" construction, applied to high-rise residential buildings including Passive House standard projects.
Go-to-market
Urban residential developers and building owners in dense city markets, particularly New York City.
Geography
Headquartered in New York, with disclosed projects in New York City including East Harlem (247 E 117th Street) and 147 St. Felix.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
Competitors · 2
by search overlap
Companies competing with Assembly OSM for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline · 4
launches, deals, and filingsAssembly OSM's East Harlem project received a Buildings of Excellence Award, as reported by NYSERDA.
NYCEEC announced predevelopment financing for a modular Passive House new construction project in East Harlem associated with Assembly OSM.
The company presented what it describes as a post-modular construction model, covered by Construction Broadsheet.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
Legal entities · 1
corporate structureIn the news
▸Research sources · 1
primary sources listed
- Assembly OSMassemblyosm.com · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Assembly OSM do?
- New York offsite construction company using a "post-modular" system to assemble urban high-rise housing.
- Who founded Assembly OSM?
- Assembly OSM was founded by Bill Sharples, Chris Sharples in 2018.
- Who are Assembly OSM's investors?
- Assembly OSM's investors include Andreessen Horowitz, Atento Capital, FJ Labs, Manta Ray Ventures, Yes VC, Bessemer Venture Partners, Fifth Wall, Gaingels and 1 more.
- How much funding has Assembly OSM raised?
- Assembly OSM has disclosed $64.4M raised across 1 round.
- Where is Assembly OSM headquartered?
- Assembly OSM is headquartered in New York, US.