Bolthole Index

Nassau County, New York

Zoning, building permits and septic rules in the Village of Roslyn Estates, New York

The Village of Roslyn Estates in Nassau County, New York requires a building permit for work that must conform to the state code1. The village also has its own zoning code, Chapter 2002. Septic permits for on-site systems in Nassau County come from the Nassau County Department of Health3; we could not confirm how that applies inside the village.

At a glance

Building permit
Required, issued by the village1
Zoning
Village zoning code, Chapter 2002
Minimum lot (R-18)
18,000 sq ft and 110 ft frontage4
Minimum home (R-18)
1,700 sq ft livable area plus a two-car garage5
Septic
Nassau County Department of Health for on-site systems county-wide3
Certificate of occupancy
Required for permitted work6

Who to call

Building permits

Village of Roslyn Estates Building Inspector

Building permits, inspections and certificates of occupancy inside the village under Chapter 69

Septic permits

Nassau County Department of Health, Bureau of Environmental Engineering

On-site sewage disposal system plans and SPDES permits in Nassau County

516-227-9692

Contact details are copied from each office’s official page and were checked against it on October 14, 2026.

Off-grid gear

Going off-grid in Village of Roslyn Estates means bringing your own water and power. The kit we’d start with:

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Does Roslyn Estates, NY have zoning, and what does it mean for lot size and setbacks?

The Village of Roslyn Estates adopts and enforces its own zoning in Chapter 200 of the village code2. Nassau County does not zone for its villages; zoning is set village by village7.

In the R-18 Residence District, no building or structure may be built on a lot of less than 18,000 square feet or with less than 110 feet of frontage4. A new single-family dwelling in R-18 needs at least 1,700 square feet of livable area and a two-car garage5.

Setbacks in R-18 are a front yard of at least 40 feet, a rear yard of at least 45 feet, and side yards of at least 20 feet each, with the two side yards together at least 45 feet8. Buildings and structures together may cover no more than 25% of the lot9. Height is capped at 30 feet for a multistory building, 21 feet for a one-story building and 15 feet for an accessory structure10.

Can you live in an RV or a tiny home in Roslyn Estates?

We could not confirm any rule that allows an RV or a tiny home as a residence in Roslyn Estates. The R-18 district lists detached single-family dwellings and other listed uses, and a new single-family dwelling must have at least 1,700 square feet of livable area5. A tiny home would not meet that minimum. For an RV, ask the village's building inspector before you buy11.

Do you need a building permit in Roslyn Estates, and who issues it?

Yes. The village requires a building permit for any work that must conform to the applicable law, including construction, alteration and demolition111. Permit exemptions are narrow, such as playground equipment, awnings, finish work and like-for-like replacement1.

The village applies the New York State Uniform Fire Prevention and Building Code and Energy Code, together with its zoning chapter12. Inside the village, the village issues building permits, not Nassau County or the Town of Hempstead.

Applications are signed by the owner and include construction documents prepared by a registered architect or licensed engineer, and some applications are referred to the architectural review board13. We did not find an owner-builder exemption in the village code. Fees are set by resolution of the board of trustees14; we could not confirm the amounts, so ask the village for its current fee schedule.

How do septic permits work in Roslyn Estates?

In Nassau County, on-site sewage disposal systems are reviewed and permitted by the Nassau County Department of Health, Bureau of Environmental Engineering315. After approved construction is finished, a SPDES permit from the same department is required before sanitary waste is discharged into the ground16.

Where public sewers serve an area, facilities must connect to them15. The village code has a chapter on sewer districts that we could not confirm, so ask the village whether your lot is sewered before planning any septic system. Wells are also unconfirmed for the village.

Building a home in Roslyn Estates: the steps, in order

  1. Confirm the lot meets R-18 minimums for area and frontage4.
  2. Design to the setback, height and coverage limits and the minimum home size85.
  3. Have plans prepared by a registered architect or licensed engineer and apply to the village for a building permit13.
  4. Confirm sewer or septic with the village and the Nassau County Department of Health3.
  5. Pass inspections, then obtain the certificate of occupancy176.

What stays with Nassau County, and what to check before you buy in Roslyn Estates?

Septic permits and SPDES discharge permits stay with the Nassau County Department of Health3. Subdividing land is regulated: the village's subdivision chapter applies, and the county Planning Commission reviews subdivisions within 300 feet of a municipal boundary18.

For land outside the village, see the Nassau County page. Nassau County's effective property tax rate is 1.5%19.

Watch-outs

  • We could not confirm the village's driveway and curb-cut rules, so ask the village building inspector before you plan a driveway11.
  • Flood zone development needs a local floodplain permit in FEMA-mapped areas; ask the village building inspector whether your lot is mapped20.
  • We could not confirm the village's rules on accessory dwellings, short-term rentals or floodplain, so call the village before relying on them11.

Sources

  1. Chapter 69 Fire Prevention and Building Construction - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  2. Chapter 200 Zoning, Article V R-18 Residence District - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  3. On-Site Sewage Disposal System and SPDES Permit, quoted and re-checked
  4. Chapter 200 Zoning, Article V R-18 Residence District - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  5. Chapter 200 Zoning, Article V R-18 Residence District - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  6. Chapter 69 Fire Prevention and Building Construction - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  7. Zoning Review, quoted and re-checked
  8. Chapter 200 Zoning, Article V R-18 Residence District - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  9. Chapter 200 Zoning, Article V R-18 Residence District - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  10. Chapter 200 Zoning, Article V R-18 Residence District - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  11. Village of Roslyn Estates Building Inspector (ecode360.com)
  12. Chapter 69 Fire Prevention and Building Construction - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  13. Chapter 69 Fire Prevention and Building Construction - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  14. Chapter 69 Fire Prevention and Building Construction - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  15. Nassau County Department of Health, Bureau of Environmental Engineering (nassaucountyny.gov)
  16. On-Site Sewage Disposal System and SPDES Permit, quoted and re-checked
  17. Chapter 69 Fire Prevention and Building Construction - Village of Roslyn Estates, NY (Village of Roslyn Estates), quoted and re-checked
  18. Environmental Review, quoted and re-checked
  19. Effective property tax rate: Bolthole Index county data
  20. Floodplain Management - NYSDEC (New York statewide rule), quoted and re-checked

Written October 14, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for Village of Roslyn Estates

Village of Roslyn Estates’s own rules

  • Building permitRequired

    Construction, alteration, demolition etc. inside Roslyn Estates village

    • Exempt categories in § 69-5b include playground equipment, small above-ground pools under 18 inches deep, awnings, finish work, listed portable equipment, like-for-like replacement and non-structural repairs.
    • Permit is also required for work adding assessable value, altering load-bearing members, changing use, or regulated by village ordinance.
    “a building permit shall be required for any work which must conform to the applicable law”
  • Building code adoptedAdopted (with conditions)

    Construction inside Roslyn Estates village

    • Chapter 69 applies the state energy code and state uniform fire prevention and building code as amended from time to time, together with chapter 200 and other village law.
    “the state energy conservation construction code and the state uniform fire prevention and building code, as currently in effect and as they may hereafter amended from time to time”
  • InspectionsRequired

    Work under a building permit inside Roslyn Estates village

    • Inspection precedes issuance of certificate of occupancy or compliance.
    “the building inspector or an inspector authorized by the building inspector shall inspect the building, structure or work prior to the issuance of a certificate of occupancy or certificate of compliance.”
  • Certificate of occupancyRequired

    Permitted work and use/occupancy changes inside Roslyn Estates village

    • Issued within 30 days after application; final survey normally required; temporary certificates possible.
    “a certificate of occupancy shall be required for any work which is the subject of a building permit and for all structures, buildings, or portions thereof which are converted from one use or occupancy classification or subclassification to another.”
  • Local zoningPresent

    Land inside Roslyn Estates village; Chapter 200 Zoning of the village code

    “in the r-18 residence district, no building shall be erected, altered or used and no lot or premises may be used except for one or more of the following purposes:”
  • Minimum dwelling sizeSpecified

    Single-family dwellings in the R-18 Residence District, Roslyn Estates village

    • New single-family dwellings must also include a two-car garage not less than 18 feet long.

    minimum livable area: >= 1700 sq ft

    “no single-family dwelling shall be erected which shall have a livable area of less than 1,700 square feet, and all single-family dwellings hereafter constructed, in addition, shall include a two-car garage not less than 18 feet long.”
  • Minimum lot sizeSpecified

    R-18 Residence District, Roslyn Estates village

    • Corner lots need 110 feet frontage on each street.
    • Minimum lot width 110 feet from street line to depth of 70 feet.

    minimum lot area: >= 18000 sq ft · minimum lot frontage: >= 110 ft

    “no building or other structure shall be erected on a lot having an area of less than 18,000 square feet, or a lot frontage of less than 110 feet.”
  • SetbacksSpecified

    R-18 Residence District, Roslyn Estates village

    • Side yard subject to § 200-11b exception.
    • Sky exposure plane limits also apply (§ 200-22i).
    • Pools: 15 ft from rear and side lot lines.

    front yard: >= 40 ft · rear yard: >= 45 ft · side yard (each): >= 20 ft (aggregate of two side yards at least 45 ft)

    “rear yard. no lot shall have a rear yard of less than 45 feet in depth.”
  • Lot coverageSpecified

    R-18 Residence District, Roslyn Estates village

    • Floor area ratio (§ 200-27) and front-yard impervious coverage (§ 200-28) also regulated; not read.

    maximum building area: <= 25 % of lot area

    “the area of lot covered by all of the buildings and other structures on the lot shall not exceed 25% of the total lot area.”
  • Building heightSpecified

    R-18 Residence District, Roslyn Estates village

    • Sky exposure plane/height setback ratios also apply.

    multistory building: <= 30 ft · one-story building: <= 21 ft · accessory structure: <= 15 ft

    “no multistory building or part thereof shall exceed 30 feet in height.”
  • Subdividing landRegulated (with conditions)

    Subdivision of land inside Roslyn Estates village

    • Chapter 167 text not opened; building permit also required for subdivision of property per § 69-5a(4)(h).
    “chapter 167 subdivision of land (§ 167-1 &ndash; § 167-52)”
  • Permit feesVariable (with conditions)

    Building permit and related fees inside Roslyn Estates village

    • Fee amounts not located; chapter 60 (fees, costs, deposits) not opened.
    “a schedule of fees applicable to all applications, inspections, and other actions made under this chapter may be established, and amended from time to time, by resolution of the board of trustees.”
  • Permit processPublished (with conditions)

    Building permit applications inside Roslyn Estates village

    • Application signed by owner; three sets of construction documents prepared by a registered architect or licensed engineer; architectural review board referrals (§ 69-6.1).
    “the application for a building permit and its accompanying documents shall contain sufficient information to permit a determination that the intended work accords with the requirements of the applicable law.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Village of Roslyn Estates or Nassau County directly.

  • Owner-builder exemption — Owner-builder exemption inside Roslyn Estates village
  • Living in an RV — RV occupancy inside Roslyn Estates village
  • Camping on your land — Temporary camping inside Roslyn Estates village
  • Tiny homes — Tiny homes inside Roslyn Estates village
  • Manufactured homes — Manufactured homes inside Roslyn Estates village
11 more unanswered
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Village of Roslyn Estates publishes no rule on the point, not that none exists. Nassau County’s page lists the county offices to call.

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