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About 21b
Meet 21B: a passionate team of NYC real estate developers, crafting beautiful and modern apartment complexes in the NY metropolitan area. 21b is listed as a company classified under Residential Building Construction, based in Brooklyn, New York, United States, employing 1-5 people and reporting $1M-$5M in annual revenue.
Its primary NAICS classification is 236117 (New Housing For-Sale Builders). 21b is one of 5,245,681 companies listed in New York.
Business Contact Information
- Website
- 21b.dev
- Address
- 3823 13th Ave, Brooklyn, New York, 11218, United States
Industry & Classification
NAICS Codes
- 23Construction
- 2361Residential Building Construction
- 236117New Housing For-Sale Builders
SIC Codes
- 15Building Construction General Contractors And Operative Builders
- 153Operative Builders
- 1531New Housing For-Sale Builders
Company Details
- Employees
- 4 (1-5)
- Annual Revenue
- $1.5M ($1M-$5M)
21b: frequently asked questions
What does 21b do?
Meet 21B: a passionate team of NYC real estate developers, crafting beautiful and modern apartment complexes in the NY metropolitan area.
Where is 21b located?
21b is headquartered at 3823 13th Ave, Brooklyn, New York, 11218, United States.
How many employees does 21b have?
21b has about 4 employees (the 1-5 range).
What is 21b's annual revenue?
21b's annual revenue is estimated at $1.5M (the $1M-$5M range).
What industry is 21b in?
21b's primary NAICS code is 236117 (New Housing For-Sale Builders).
How can I contact 21b?
Its website is 21b.dev.
Largest companies in New York
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Manufacturing sales in New York, 2026
In New York, Factur's 2026 study counted 53 manufacturing quotes worth $5M and 8 purchase orders over 12 months: 15% of quotes became orders, against 21% nationally. See the New York data.
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