221 Nassau Avenue, Brooklyn, New York City: 3-Storey Apartment Building Renovation
3-Storey Apartment Building Renovation at 221 Nassau Avenue, Brooklyn, New York City was permitted on May 26, 2026 with a stated construction value of under $1M. Interior renovation to existing 3 story plus cellar. change of use from mixed {comm. and residential (5 family)} to 4 family. Builtie tracks the project's stage, the trades still being bought and the people who decide.
The same four steps, whether the buyer is a builder, a designer, an owner or a company you want to acquire.
The project
| Address | 221 Nassau Avenue, Brooklyn, New York City |
| Project | 3-Storey Apartment Building Renovation |
| Building type | Residential |
| Work | Renovation or alteration |
| Permit issued | May 26, 2026 |
| Stated construction value | under $1M |
| Estimated stage | Foundation |
| Company named on the permit | Reveal the builder — free trial |
| Decision makers and contacts | See who to contact — free trial |
From the permit: “Interior renovation to existing 3 story plus cellar. change of use from mixed {comm. and residential (5 family)} to 4 family”
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Where this project is
- May 26, 2026Alteration CO: 3-Storey Apartment Building Renovation · under $1M (this page)
- July 13, 2026Alteration CO: plumbing · under $1M
- July 23, 2026Alteration CO: interior alteration
- August 3, 2026Alteration CO: mechanical
- June 2026Estimated construction start (estimate)
- December 2026Estimated completion (estimate)
How we estimate: from the permit date and its stated value, with the build lengths Builtie's project feed uses (about 7 months for a job this size). It is not the builder's schedule.
Other big projects nearby
- 237 Mcguinness Boulevard, BrooklynNew construction · $5M to $10M · March 2026
- 306 North Henry Street, BrooklynInterior alteration · $1M to $5M · July 2026
- 535 Morgan Avenue, BrooklynAlteration: roofing · $1M to $5M · July 2026
- 187 Greenpoint Avenue, BrooklynAlteration CO · $1M to $5M · September 2026
- 215 Calyer Street, BrooklynNew building · $1M to $5M · March 2026
7 projects of $1M+ were permitted within 1 km in the last 12 months. See them all in Builtie →
Which trades are being bought now
When each trade on this project is usually picked, in calendar months (estimate). As of October 2026 every window below has passed (est.): the project may already be finished.
| Trade | When to approach (est.) | Status |
|---|---|---|
| Construction (est.) | Jun 2026 – Dec 2026 | Estimate |
| Construction Site Security | Jun 2026 – Jul 2026 | Window passed (est.) |
| Concrete and Foundation | Jun 2026 – Jul 2026 | Window passed (est.) |
| Structural Steel | Jun 2026 – Jul 2026 | Window passed (est.) |
| Elevators | Jun 2026 – Aug 2026 | Window passed (est.) |
| Framing | Jun 2026 – Aug 2026 | Window passed (est.) |
| Painting | Jul 2026 – Aug 2026 | Window passed (est.) |
| Masonry | Jun 2026 – Jul 2026 | Window passed (est.) |
| Waterproofing | Jun 2026 – Jul 2026 | Window passed (est.) |
| Roofing | Jul 2026 – Aug 2026 | Window passed (est.) |
| Windows, Doors and Glazing | Jul 2026 – Aug 2026 | Window passed (est.) |
How we estimate: each bar is the share of the build, from the estimated start (June 2026) to the estimated completion (December 2026) above, when the builder usually picks that trade. It is not the builder's schedule.
What Builtie adds
In Builtie: the decision makers on this project and their verified contacts, the trades already credited on it, the builder's other active permits, and LinkedIn and email outreach that runs while you work.
Other major projects in New York City
- 582 Park Place, Brooklyn: Apartment Building Renovation
- 2626 Hylan Boulevard, Staten Island: School Renovation
- 1510 Sheepshead Bay Road, Brooklyn: Commercial Project Renovation
- 89-08 Van Wyck Expressway, Queens: Healthcare Building Renovation
- 500 West 33 Street, Manhattan: Retail Building Renovation
All of them: construction projects in New York City by address. All five boroughs are in the feed, which has run since February 27, 2026. New York issues separate permits for each trade, so the firm named on a permit is often the trade contractor, an engineer or an expediter rather than the developer. Builtie groups the permits into projects and resolves the owner and builder separately.
Plans
Builtie's Starter plan is $79 per seat per month for 20 projects; Growth is $99 for 50 projects and adds the LinkedIn and email outreach you run yourself. Opening a project spends one credit, and the decision makers, emails, phones and AI call script inside it are included. Your monthly credits reset at each renewal, and extra credit packs are valid for 30 days. The free trial runs 7 days with 10 projects. Custom, where Builtie's team runs the outreach for you, starts from $1,500 a month on top of a Growth seat.
Frequently asked questions
What is being built at 221 Nassau Avenue, Brooklyn?
3-Storey Apartment Building Renovation. Interior renovation to existing 3 story plus cellar. change of use from mixed {comm. and residential (5 family)} to 4 family
When was the permit issued for 221 Nassau Avenue, Brooklyn?
May 26, 2026, by New York City.
Who is building 221 Nassau Avenue, Brooklyn?
Builtie resolves the builder or general contractor behind the permit and attaches a verified decision maker.
Which trades does 221 Nassau Avenue, Brooklyn need now?
Estimated from the permit date, the award windows for site security; concrete; structural steel; elevator; framing; painting; masonry; waterproofing; roofing; window, door and glazing had passed by October 2026; the project may already be finished. Builtie tracks the builder's next projects.
What does Builtie cost?
Starter is $79 per seat per month for 20 projects; Growth is $99 for 50 projects and adds LinkedIn and email outreach. There is a 7-day free trial with 10 projects.