THE CONDO BOOK PROJECT

JJK Building Consulting

Held the general construction permit on the New Building job for 2 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
2
Residential units
17
Average $/unit
$1.02 million
Years
2023–2025
ManhattanBrooklynQueensBronxStaten Island 928 57th Street Condominium, 928 57th StreetLian Feng Condominium, 147-12 Roosevelt Avenue

Pro · Advanced analysis

Recent Growth

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

1 building accepted in 2024–2026 (2026 to date), against 1 in 2021–2023: level. 50% of all 2 dated buildings are from the last 3 years.

Year acceptedBuildingsUnits
2026 to date0—
202516
20240—
2023111
20220—
20210—

Latest: 928 57th Street Condominium, accepted Jul 21, 2025.

Strongest Relationships

No other firm is named with JJK Building Consulting on more than one building yet.

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

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CondominiumAcceptedUnits$/unit
928 57th Street Condominium928 57th Street · Brooklyn · new constructionSponsor: 183 Holdings Inc. · DOB job 321721570 ↗ · permits 202120256$992,333
Lian Feng Condominium147-12 Roosevelt Avenue · Queens · new constructionSponsor: Lian Feng International LLC · DOB job 421577564 ↗ · permits 2021202311$1.05 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.