520 Madison Avenue, Manhattan, New York City: Office and Tenant Fit-Out
Office and Tenant Fit-Out at 520 Madison Avenue, Manhattan, New York City was permitted on June 8, 2026 with a stated construction value of under $1M. Interior renovation of office space on 36th and 37th floors. 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 | 520 Madison Avenue, Manhattan, New York City |
| Project | Office and Tenant Fit-Out |
| Building type | Commercial |
| Work | Renovation or alteration |
| Permit issued | June 8, 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 of office space on 36th and 37th floors”
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Where this project is
- Since March 202619 other permits at this address
- March 18, 2026Interior alteration · $5M to $10M
- March 18, 2026Alteration: mechanical · $1M to $5M
- March 23, 2026Alteration CO: mechanical · $1M to $5M
- March 23, 2026Alteration CO: interior alteration · $5M to $10M
- June 8, 2026Alteration: Office and Tenant Fit-Out · under $1M (this page)
- August 17, 2026Alteration: mechanical · $1M to $5M
- July 2026Estimated construction start (estimate)
- January 2027Estimated 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
- 375 Madison Avenue, ManhattanAlteration: facade work · $100M to $250M · July 2026
- 325 Park Avenue, ManhattanAlteration: structural work · $100M to $250M · March 2026
- 1730 Broadway, ManhattanAlteration CO: conversion to residential · $50M to $100M · March 2026
- 10 Rockefeller Plaza, ManhattanAlteration CO · $50M to $100M · July 2026
- 1005 1 Avenue, ManhattanAlteration CO: conversion to residential · $50M to $100M · September 2026
214 projects of $1M+ were permitted within 1 km in the last 12 months. See them all in Builtie →
The company behind this project has 114 other projects in Builtie
- ████████ ConstructionNew York City · Interior alteration · $25M to $50M · 2026
- ████████ ConstructionNew York City · Interior alteration · $10M to $25M · 2026
- ████████ ConstructionNew York City · Alteration: demolition · $10M to $25M · 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.) | Jul 2026 – Jan 2027 | Estimate |
| Construction Site Security | Jun 2026 – Aug 2026 | Window passed (est.) |
| Concrete and Foundation | Jun 2026 – Jul 2026 | Window passed (est.) |
| Structural Steel | Jul 2026 – Aug 2026 | Window passed (est.) |
| Elevators | Jul 2026 – Aug 2026 | Window passed (est.) |
| Framing | Jul 2026 – Aug 2026 | Window passed (est.) |
| Painting | Jul 2026 – Sep 2026 | Window passed (est.) |
| Masonry | Jul 2026 – Aug 2026 | Window passed (est.) |
| Waterproofing | Jul 2026 – Aug 2026 | Window passed (est.) |
| Roofing | Jul 2026 – Sep 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 (July 2026) to the estimated completion (January 2027) 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
- 234 Rochester Avenue, Brooklyn: Apartment Building Renovation
- 51 Astor Place, Manhattan: Retail Building Renovation
- 761 Lydig Avenue, Bronx: Office and Tenant Fit-Out
- 506 6 Street, Brooklyn: Healthcare Building Renovation
- 2303 Avenue D, Brooklyn: Apartment 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 520 Madison Avenue, Manhattan?
Office and Tenant Fit-Out. Interior renovation of office space on 36th and 37th floors
When was the permit issued for 520 Madison Avenue, Manhattan?
June 8, 2026, by New York City.
Who is building 520 Madison Avenue, Manhattan?
Builtie resolves the builder or general contractor behind the permit and attaches a verified decision maker.
Which trades does 520 Madison Avenue, Manhattan 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.