Buying in Central Islip: the questions with sourced answers
Each answer is built from Central Islip’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 Central Islip?
Median year built in zip 11722: 1969 (Suffolk County: 1970). Of 10,824 units, the 1960s built the most, 23%; 11% is from 2000 on. Next come the 1950s at 21% and the 1970s at 20%. 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: 70 years old. (ACS)
How are homes in Central Islip heated? Is an oil tank likely?
51% utility gas, 32% fuel oil or kerosene; fuel oil 32% against 45% county-wide. NYSDEC logs 251 petroleum spills at private homes in Central Islip since 1986, 66 since 2015. 5 were logged in 2012, the year of Hurricane Sandy. Ask about a tank, and for closure papers. A tank can be buried in the yard or sit in the basement, and a removed one should come with paperwork. Buried tanks are outside the standards New York sets for a home inspection, so the seller’s answer matters. (ACS, NYSDEC)
Is Central Islip mostly houses or apartments, owned or rented?
67% detached houses, 14% attached single-family houses, 4% buildings of 10 to 19 units; 77% owner-occupied (Suffolk County: 82%). Detached houses dominate, so most inspections here run from the roof to the foundation of one building. (ACS)
Is radon a concern in Central Islip?
Town of Islip: 70 basement tests, average 1.16 pCi/L, 3 at 4 or above (4%). Suffolk County: 8% of 576. First-floor tests there: 35, average 0.6. On the share at 4 or above, it ranks 7th of the county’s 10 towns and cities. The highest basement reading was 10.4 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 Central Islip flooded? Is the house in a flood zone?
41 flood-insurance claims from zip 11722 since 1978, most in 1979 (18): 112th 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 Central Islip?
The Town of Islip Building Division. 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 Central Islip compare with the towns around it?
By median year built, fuel-oil share and owner-occupancy: Central Islip (zip 11722) 1969, 32%, 77%; Islip Terrace (zip 11752): built 1965, oil 41%, 87% owner-occupied; Hauppauge (zip 11788): built 1969, oil 30%, 84% owner-occupied; East Islip (zip 11730): built 1958, oil 50%, 85% owner-occupied. (ACS)
Which code, water and sewer rules apply in Central Islip?
The New York State Uniform Code, the Suffolk County Water Authority and private wells, and the Sanitary Code rules on cesspools (no in-kind replacement since 2017) and I/A septic systems: county-wide, written once. They are the same for every town in Suffolk County, so they are set out there with their sources instead of on each page.
How much does a home inspection in Central Islip 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.