THE CONDO BOOK PROJECT

Cornerstone Construction

Held the general construction permit on the New Building job for 3 New York City condominiums, as the Department of Buildings records it. Each building below links its DOB job. A contractor replaced partway through still counts for the building.

Buildings
3
Residential units
16
Average $/unit
$1.86 million
Years
2017–2022
ManhattanBrooklynQueensBronxStaten Island 145 14th Street Condominium, 145 14th Street341 Fenimore Street Condominium, 341 Fenimore Street805 Ninth Avenue Condominium, 805 Ninth Avenue

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Recent Growth

Cornerstone Construction's buildings and units by year for the last 6 years, and whether the pace is rising or falling.

0 buildings accepted in 2024–2026 (2026 to date), against 2 in 2021–2023. 0% of all 3 dated buildings are from the last 3 years.

Year acceptedBuildingsUnits
2026 to date0—
20250—
20240—
20230—
2022211
20210—

Latest: 145 14th Street Condominium, accepted Mar 18, 2022.

Strongest Relationships

The firms named most often on the same buildings as Cornerstone Construction, at least 2 in common.

Architects

Sponsor's counsel

Sales teams

  • Corcoran2 shared buildings · 67% of Cornerstone Construction's · 2022

From the same offering plans as the table below. A firm's own affiliates aren't counted.

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CondominiumAcceptedUnits$/unit
145 14th Street Condominium145 14th Street · Brooklyn · new constructionSponsor: 145 14th St., LLC · DOB job 321210881 ↗ · permits 2019–202120224$1.24 million
341 Fenimore Street Condominium341 Fenimore Street · Brooklyn · new constructionSponsor: Fenimore Realty Group LLC · DOB job 321132074 ↗ · permits 2020–202120227$997,714
805 Ninth Avenue Condominium805 Ninth Avenue · Manhattan · new constructionSponsor: 805 Ninth Avenue Realty Group, LLC · DOB job 121236607 ↗ · permits 202120175$3.33 million

$/unit is the offering price on the AG record divided by the residential units; the average is across the plans with both. Different spellings of one contractor's name are counted together.