Short answer: Roslyn Estates has no public sewer collection district on the county health department's list; wastewater is handled on each lot. Nassau's S.E.P.T.I.C. grant for eligible nitrogen-reducing upgrades is up to $35,000 per its administrator (details below).
Roslyn Estates in numbers
| Town | Town of North Hempstead |
|---|---|
| Status | Incorporated village |
| Area | 0.42 sq mi |
| Sewer (county list) | Not publicly sewered |
| Parcels / median parcel | about 493 / 0.40 ac |
| Building permits | Village of Roslyn Estates |
Area and parcels computed 2026-11-07 from Nassau County GIS (place boundary; all tax parcels touching it, any use). Sewer status from the Nassau County Department of Health list of sewer districts by community, which is by community, not street.
Sewer status and lots
Roslyn Estates has no public sewer collection district on the county health department's list; wastewater is handled on each lot. About 493 tax parcels touch Roslyn Estates's 0.42 square miles, with a median of 0.40 acres (about 17,600 sq ft). That is the 22nd-largest median parcel of the 133 Nassau places we measured. Nearby: Roslyn (on public sewer, median parcel 0.28 ac); Munsey Park (not publicly sewered, median parcel 0.25 ac); Flower Hill (Eastern Flower Hill: Port Washington Water Pollution Control District, median parcel 0.35 ac).
Grant and permits
Because the county lists Roslyn Estates outside public sewer, its homes fall in the area Nassau's S.E.P.T.I.C. grant was designed for, subject to the program's property test. Permits come from the Village of Roslyn Estates; the contractor needs a Nassau County Home Improvement License, and no county rule we found requires an I/A system for an existing home.
For Roslyn Estates properties, Nassau grant amount and no-stacking details are on the Nassau County overview and Long Island grants guide.
Who handles what in Roslyn Estates
- Building permits: Village of Roslyn Estates
- S.E.P.T.I.C. grants: 516-364-5861 ([email protected])
Frequently asked questions
Is Roslyn Estates on public sewer?
Roslyn Estates has no public sewer collection district on the county health department's list; wastewater is handled on each lot.
Who issues permits for septic work in Roslyn Estates?
The Village of Roslyn Estates building department, with a contractor holding a Nassau County Home Improvement License.
Rules and grant steps: Town of North Hempstead overview, Nassau regulations, S.E.P.T.I.C. details. More nearby: Munsey Park, Flower Hill, East Hills, Manhasset.
Sources
Each source was re-read on November 7, 2026. Program amounts and rules change; the agency page is the authority.
- Nassau County DOH: Public sewer districts by community
- Nassau County GIS map service (place boundaries, tax parcels)
- Nassau County Soil & Water Conservation District: S.E.P.T.I.C. program (program administrator)
- Nassau County: S.E.P.T.I.C. program
Need cesspool or septic work in Roslyn Estates?
Submit a request with your address. We match it to an independent operator with a Nassau County Home Improvement License who serves that address; the operator confirms the time and price with you.
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