5723 21 Avenue, Brooklyn, New York City: Single-Family House Renovation
Follow this project · we email you when its status or build stage changes
Single-Family House Renovation at 5723 21 Avenue, Brooklyn, New York City was filed with New York City on June 30, 2026 with a stated construction value of under $1M; the city has not approved it yet (DOB status: Objections). Renovation or addition to a single-family house. 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 | 5723 21 Avenue, Brooklyn, New York City |
| Project | Single-Family House Renovation |
| Building type | Residential |
| Work | Renovation or alteration |
| Filed with the city | June 30, 2026 |
| City status | Not yet approved (DOB status: Objections) |
| Stated construction value | under $1M |
| Estimated stage | Foundation |
| Company named on the permit | Brooklyn Contractor Inc. See the decision makers — free trial |
| Decision makers and contacts | See who to contact — free trial |
Follow this project
We email you when it moves to a new status or build stage, plus the new $1M+ projects in New York City once a week. Free, unsubscribe anytime.
We email you once to confirm. Privacy
Where this project is
- March 12, 2026Alteration CO: interior alteration · under $1M
- June 30, 2026Alteration CO: Single-Family House Renovation · under $1M (this page)
- April 2026Estimated construction start (estimate)
- October 2026Estimated completion (estimate)
How we estimate: from the same company's first permit at this address (March 2026) and this permit's 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
- 5025 18 Avenue, BrooklynAlteration CO: interior alteration · $1M to $5M · August 2026
- 5902 23 Avenue, BrooklynInterior alteration · $1M to $5M · June 2026
- 5302 21 Avenue, BrooklynAlteration · $1M to $5M · July 2026
- 5909 20 Avenue, BrooklynAlteration CO · $1M to $5M · April 2026
- 1278 Mcdonald Avenue, BrooklynAlteration: foundation · $1M to $5M · March 2026
7 projects of $1M+ were filed within 1 km in the last 12 months. See them all in Builtie →
Brooklyn Contractor Inc. has 2 other projects in Builtie
- New York City · Alteration: roofing · under $1M · 2026
- New York City · Alteration: roofing · under $1M · 2026
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.) | Apr 2026 – Oct 2026 | Estimate |
| Construction Site Security | Mar 2026 – May 2026 | Window passed (est.) |
| Concrete and Foundation | Apr 2026 | Window passed (est.) |
| Structural Steel | Apr 2026 – May 2026 | Window passed (est.) |
| Elevators | Apr 2026 – May 2026 | Window passed (est.) |
| Framing | Apr 2026 – May 2026 | Window passed (est.) |
| Painting | Apr 2026 – Jun 2026 | Window passed (est.) |
| Masonry | Apr 2026 – May 2026 | Window passed (est.) |
| Waterproofing | Apr 2026 – May 2026 | Window passed (est.) |
| Roofing | Apr 2026 – Jun 2026 | Window passed (est.) |
| Windows, Doors and Glazing | Apr 2026 – May 2026 | Window passed (est.) |
How we estimate: each bar is the share of the build, from the estimated start (April 2026) to the estimated completion (October 2026) above, when the builder usually picks that trade. It is not the builder's schedule.
Find work like this in New York City
Leads for your trade: every trade in New York City.
More projects: every New York City project of $1M+ by address · major projects in New York City.
Compare tools: The Best Construction Lead Generation Software in New York.
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
- 8210 Ridge Boulevard, Brooklyn: Single-Family House Renovation
- 415 Greenwich Street, Manhattan: Duplex Renovation
- 141 Convent Avenue, Manhattan: School Renovation
- 129 West 142 Street, Manhattan: 6-Storey Apartment Building Renovation
- 217-16 51 Avenue, Queens: Single-Family House 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 5723 21 Avenue, Brooklyn?
Single-Family House Renovation. Renovation or addition to a single-family house.
Has 5723 21 Avenue, Brooklyn been permitted?
Not yet. The work was filed with New York City on June 30, 2026; the city has not approved it yet (DOB status: Objections).
Who is building 5723 21 Avenue, Brooklyn?
Brooklyn Contractor Inc. is named on the permit. The decision makers and their contacts are in Builtie.
Which trades does 5723 21 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.