Skip to content
General ConstructionManhattanPermit issued

Office to Residential Conversion at 100 William Street, Manhattan

100 WILLIAM STREET, Manhattan, 10038 · Financial District-Battery Park City

Winston

Sinra's conciergeOnline now

Planning general construction work near Financial District-Battery Park City? I’ll scope it, price it, and line up the right pro.

Reported project cost

$88,791,360

As declared on the permit filing. General Construction.

Issued
June 23, 2026
Expires
July 18, 2026
License
General Contractor

What was permitted

Property owners and developers in the Financial District considering large-scale conversions will find this permit informative regarding the costs of transforming office buildings into residential spaces. This project entails converting an office occupancy to a residential (R-2) occupancy, a significant undertaking.

Issued on June 23, 2026, this permit has an estimated project cost of $88,791,360, highlighting the investment required for such a conversion. Bushburg Builders LLC is listed as the General Contractor for this major development.

Plan a similar project

Want work like this done at your place?

Tell us what you have in mind. We scope it, price it against work like this in Manhattan, and lines up the right contractor. You approve; we handle the back-and-forth.

View the official permit record

Tracking number, work description, cost and dates

Tracking number264047915
Work permit #M01363617-I1-GC
Job filing number—
Work typeGeneral Construction
StatusPermit Issued
Job descriptionCONVERSION FROM OFFICE (B) OCCUPANCY TO RESIDENTIAL (R-2) OCCUPANCY PURSUANT TO ARTICLE I, CHAPTER V OF THE NYC ZONING RESOLUTION AND ARTICLE 7B OF THE NYS MULTIPLE DWELLING LAW FOR RESIDENTIAL CONVERSION.
Floor / unitFloor Number(s) 1, Floor Number(s) 1, Floor Number(s) 2, Floor Number(s) 3, Floor Number(s) 3, Floor Number(s) 4, Floor Number(s) 5, Floor Number(s) 6, Floor Number(s) 7, Floor Number(s) 8, Floor Numb
Estimated cost$88,791,360
ApprovedJune 15, 2026
IssuedJune 23, 2026
ExpiresJuly 18, 2026
BBL—
BIN—

Property owner

Bushburg Builders LLC

Abraham Hoffman

Related searches

office conversionresidential conversionFinancial DistrictManhattangeneral constructionlarge-scale renovation$88M project cost