345 Park Avenue South, Manhattan, New York City: Office and Tenant Fit-Out
Office and Tenant Fit-Out at 345 Park Avenue South, Manhattan, New York City was permitted on September 4, 2026 with a stated construction value of under $1M. Herewith filing for modifications to the existing mechanical system on the 5th flr in conjunction with office renovations per plans. no change in use, occupancy or egress under this application. 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 | 345 Park Avenue South, Manhattan, New York City |
| Project | Office and Tenant Fit-Out |
| Building type | Commercial |
| Work | Renovation or alteration |
| Permit issued | September 4, 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: “Herewith filing for modifications to the existing mechanical system on the 5th flr in conjunction with office renovations per plans. no change in use, occupancy or egress under this application”
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Where this project is
- Since April 20263 other permits at this address
- April 1, 2026Alteration: roofing · under $1M
- July 15, 2026Alteration: site protection · under $1M
- August 28, 2026Interior alteration · $1M to $5M
- September 1, 2026Alteration: plumbing · under $1M
- September 1, 2026Alteration: fire protection · under $1M
- September 4, 2026Alteration: Office and Tenant Fit-Out · under $1M (this page)
- October 2026Estimated construction start (estimate)
- April 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
- 301 East 17 Street, ManhattanAlteration: mechanical · $100M to $250M · June 2026
- 371 Seventh Avenue, ManhattanAlteration CO: interior alteration · $50M to $100M · October 2026
- 95 Madison Avenue, ManhattanAlteration CO: conversion to residential · $25M to $50M · September 2026
- 110 West 32 Street, ManhattanAlteration CO: plumbing · $10M to $25M · July 2026
- 223 East 23 Street, ManhattanAlteration: roofing · $10M to $25M · August 2026
123 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: 10 to approach now.
| Trade | When to approach (est.) | Status |
|---|---|---|
| Construction (est.) | Oct 2026 – Apr 2027 | Estimate |
| Construction Site Security | Sep 2026 – Oct 2026 | Approach now |
| Concrete and Foundation | Sep 2026 – Oct 2026 | Approach now |
| Structural Steel | Oct 2026 | Approach now |
| Elevators | Oct 2026 – Nov 2026 | Approach now |
| Framing | Oct 2026 – Nov 2026 | Approach now |
| Painting | Oct 2026 – Dec 2026 | Approach now |
| Masonry | Oct 2026 | Approach now |
| Waterproofing | Oct 2026 | Approach now |
| Roofing | Oct 2026 – Nov 2026 | Approach now |
| Windows, Doors and Glazing | Oct 2026 – Nov 2026 | Approach now |
How we estimate: each bar is the share of the build, from the estimated start (October 2026) to the estimated completion (April 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
- 1860 Seminole Avenue, Bronx: Commercial Project Renovation
- 267-20 74 Avenue, Queens: Parking Structure Renovation
- 1897 Crotona Avenue, Bronx: Apartment Building Renovation
- 195 East 206 Street, Bronx: 9-Storey Apartment Building
- 2124 Vyse Avenue, Bronx: 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 345 Park Avenue South, Manhattan?
Office and Tenant Fit-Out. Herewith filing for modifications to the existing mechanical system on the 5th flr in conjunction with office renovations per plans. no change in use, occupancy or egress under this application
When was the permit issued for 345 Park Avenue South, Manhattan?
September 4, 2026, by New York City.
Who is building 345 Park Avenue South, Manhattan?
Builtie resolves the builder or general contractor behind the permit and attaches a verified decision maker.
Which trades does 345 Park Avenue South, Manhattan need now?
Estimated as of October 2026, the trades to approach now are site security; concrete; structural steel; elevator; framing; painting; masonry; waterproofing; roofing; window, door and glazing.
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.