Buying in West Harlem: the questions with sourced answers
Each answer is built from West Harlem’s own rows in public data — the Census, NYSDOH, NYSDEC, FEMA, the office that holds the permits — or from Lou’s reports, and cites its source. Data retrieved 1 November 2026.
How old are the houses in West Harlem?
Median year built in zip 10026: 1949 (Manhattan: 1951). Of 17,648 units, 44% predates 1940; 22% is from 2000 on. Next come the 2000s at 16% and the 1950s at 10%. An older house is not a worse house, but its wiring, plumbing and roof were installed under different rules and replaced piecemeal, which is what the inspection looks for. Lou’s reports here: 124 years old. (ACS)
How are homes in West Harlem heated? Is an oil tank likely?
55% utility gas, 19% electricity; fuel oil 17% against 15% county-wide. NYSDEC logs Manhattan home oil spills under the borough, not West Harlem. A gas conversion can leave a tank behind. An abandoned tank is most likely in a house that was converted from oil. Buried tanks are outside the standards New York sets for a home inspection, so the seller’s answer matters. (ACS, NYSDEC)
Is West Harlem mostly houses or apartments, owned or rented?
35% buildings of 50 or more units, 33% buildings of 20 to 49 units, 15% buildings of 10 to 19 units; 23% owner-occupied (Manhattan: 25%). With 69% of units in buildings of 20 or more, many purchases here are apartments: the inspection covers the unit, and the roof, plant and risers belong to the board. Lou’s jobs here included a condominium. (ACS)
Is radon a concern in West Harlem?
Manhattan (reported by borough): 131 basement tests, average 2.09 pCi/L, 16 at 4 or above (12%). First-floor tests there: 68, average 2.7. The highest basement reading was 49.5 pCi/L. EPA’s action level is 4 pCi/L, and it advises testing every home whatever the area’s results. Radon testing is optional. (NYSDOH)
Has West Harlem flooded? Is the house in a flood zone?
1 flood-insurance claim from zip 10026 since 2021: 186th of the 189 zips on these pages. A claim count describes the zip, not the house. Flood zones follow the address. Check the address on FEMA’s map. (OpenFEMA)
Who holds the permits and certificate of occupancy in West Harlem?
The NYC Department of Buildings. Look the address up on BIS or DOB NOW. Your attorney usually runs the search. The inspection reports the condition of what is there and flags work that typically needs a permit, such as a finished basement, a dormer or a moved panel, so you know what to ask about.
How does West Harlem compare with the towns around it?
By median year built, fuel-oil share and owner-occupancy: West Harlem (zip 10026) 1949, 17%, 23%; Harlem (zip 10027): built 1943, oil 17%, 16% owner-occupied; Manhattan Valley (zip 10025): built 1938, oil 23%, 31% owner-occupied; Carnegie Hill (zip 10128): built 1960, oil 15%, 32% owner-occupied. (ACS)
Which code, water and sewer rules apply in West Harlem?
The New York City Construction Codes, the NYC Department of Buildings records, NYC water and sewer and the offering-plan rules for co-ops and condos: county-wide, written once. They are the same for every town in Manhattan, so they are set out there with their sources instead of on each page.
How much does a home inspection in West Harlem cost, and how fast is the report?
Lou quotes the actual property, not a flat rate — what drives the price is size, age and what is included. The written report arrives the same day as a rule; a large or complex house can run to the next morning. Call or text 516-330-3870.
