NYC Office Construction & Building Data
Real, live construction activity on New York City office buildings — filings, permits, and contractors — plus a clear explanation of how the industry grades office buildings (Class A/B/C) and how that differs from the city's own official building classification. See also Retail and Hotel property types, and Office-to-Residential Conversions for NYC's ongoing adaptive-reuse wave.
Which major companies occupy these buildings? See Major Office Tenants →
Office Building Ratings Sheet
NYC's largest office buildings side by side: the energy efficiency grade the city's own thresholds give each one, the ENERGY STAR score behind it, how much energy and carbon it uses per square foot, and how far it is from the subway. Click any header to sort, any cell to inspect it, or a borough tab to switch sheets.
Every figure below is grouped by NYC Department of Finance's own building_class field on real DOB Job Application Filings — a structural/use classification, not a market-condition signal. These are construction and alteration filing counts, not asking rents, vacancy rates, or lease transactions — no public NYC dataset publishes those, so none is shown or estimated here.
Filings by Subclass
Filings by Borough
Highest-Value Recent Filings
Contractors Working On This Property Type
Joined from filings of this class to DOB Permit Issuance by job number — the two datasets don't share a single query, so this is the honest bridge between them.
Office Building Grades: Class A, B & C
Distinct from the real DOF building_class codes above — this is the commercial-leasing industry's own quality-tier system, defined by BOMA (Building Owners and Managers Association International) and used by brokers to describe a building's competitive position in its market, not its structural type.
Class A
The most prestigious buildings competing for premier tenants — rents above the local average, high- quality finishes, state-of-the-art systems, strong accessibility, and a clear market presence.
Class B
Well-managed, well-maintained, and functional buildings competing for a wide range of tenants at rents in the local average range — a step down from Class A in finish and amenities, not in upkeep.
Class C
Functional space at below-average rents, typically in older buildings that may need renovation, with dated systems and simpler finishes.
Important, and stated plainly rather than glossed over: BOMA itself advises against publishing a class rating for an individual building — the criteria are market-relative and assessed subjectively, with no fixed national formula. For that reason, no specific NYC building on this site is labeled Class A, B, or C; the real, citable data above is grouped by NYC's own official building_class codes instead.
Frequently Asked
- What is a Class A office building in NYC?
- Class A describes the most prestigious office buildings in a market — premium finishes, modern systems, strong accessibility, and rents above the local average, per BOMA's own building-class definitions. It's a relative, market-by-market designation, not a fixed checklist, and BOMA itself advises against publishing a formal class rating for an individual building since the criteria vary by market and assessor.
- What's the difference between NYC office building Class A, B, and C?
- Class A buildings compete for premium tenants at above-average rents with top-tier finishes and systems. Class B buildings are well-maintained and functional at average-market rents, a step down in finish and amenities. Class C buildings are typically older, offer functional space at below-average rents, and often need renovation. All three are relative to the local market, not an absolute standard.
- Is Class A/B/C the same as NYC's official building classification codes?
- No — these are two different systems, and this page is careful not to conflate them. NYC's Department of Finance publishes real, official building_class codes (O1 through O9 for office buildings) describing a building's structural type and size, which is what the data below is grouped by. The commercial-leasing "Class A/B/C" system is a separate, subjective quality tier used by brokers and BOMA, based on age, finishes, amenities, and rent level — it isn't in any NYC public dataset, so no specific building on this site is assigned an A/B/C class. The A–D letters in the ratings sheet on this page are something else: NYC's official energy efficiency grades.
- What is an NYC building energy grade?
- Under Local Law 33 of 2018 (amended by Local Law 95 of 2019), covered NYC buildings over 25,000 sq ft must post a letter grade near their entrance based on their ENERGY STAR score: A for 85 or higher, B for 70–84, C for 55–69, and D below 55 (F means the owner didn't file benchmarking data; N means exempt). The ratings sheet on this page computes that grade from each office building's latest Local Law 84 filing — the posted placard is based on the prior year's filing, so it can differ.
- How is the nearest subway station calculated?
- From MTA's own published station coordinates (MTA Subway Stations, data.ny.gov), grouped into station complexes so a transfer hub like Times Sq-42 St counts once with all its lines. Distance is the straight line from the building's benchmarking coordinates to the complex centre; the walking time multiplies that by 1.25 for the street grid at a 3 mph pace, so it's an estimate rather than a routed walk.
- Does Constructel NYC track office leasing rents or vacancy rates?
- No, and this is a real, disclosed data gap rather than an oversight: no NYC public dataset publishes office asking rents, effective rents, or vacancy by building — that data is compiled commercially by brokerages (CBRE, JLL, Cushman & Wakefield, Colliers) and isn't open data. What this page does track, live, is real public construction activity: office-building filings, permits, and the contractors doing the work, from NYC DOB's own records.