Zoning, building permits and septic rules in the Town of Cornwall, New York

At a glance

Building permit

Required; the Town of Cornwall Building Department issues it²⁵

Zoning

Town of Cornwall zoning code, not the county¹³

Subdivision

Regulated by the town; the Planning Board reviews subdivisions⁶⁷

Septic

Orange County Department of Health⁴

RV, tiny home, setbacks

Set by the town zoning code; we could not confirm the details¹

Who to call

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

Does the Town of Cornwall, NY have zoning?

Yes. The Town of Cornwall has its own zoning chapter in the town code, so zoning for land inside Cornwall is set by the town¹. Orange County itself does not adopt or enforce zoning; each municipality does³. The Town of Cornwall Building Department enforces the town zoning ordinance⁵.

What the zoning code says about RVs, tiny homes, minimum lot size, setbacks and accessory dwellings depends on the district your parcel sits in. We could not confirm those district rules, so ask the Building Department which district a parcel is in and read the zoning chapter of the town code before you buy. County statements that RVs or tiny homes are unrestricted apply only to unincorporated land with no municipal zoning and do not answer the question inside Cornwall.

Do you need a building permit in the Town of Cornwall, and who issues it?

Yes, plan on a building permit. New York's Uniform Fire Prevention and Building Code applies in every part of the state outside New York City⁸, and the Town of Cornwall administers a building code through its own Building Department². The department issues building permits, conducts construction inspections and investigates complaints⁵.

Applications go through the town's online permitting portal, listed on the Building Department page⁵. Reach the department at (845) 534-9429⁵. We could not confirm the town's fee schedule or its owner-builder rules, so ask the department before you plan a budget.

Who reviews subdivisions in the Town of Cornwall?

The town regulates subdivision of land through its own code chapter⁶. The Planning Board reviews and approves requests for subdivisions, site plans and special permits⁷. Applications are available through the Building Department after a technical work session with the board⁷. Expect a subdivision of a larger parcel to go through town review before any lot is sold or built on.

How do septic permits work in the Town of Cornwall?

Septic review is not a town building-permit item. The Orange County Department of Health handles sewage-disposal review for Orange County, and its Sanitary Engineering bureau reviews sewage-disposal systems submitted by localities⁴⁹. Call the department at 845-360-6600 to ask what review an individual residential system needs⁹.

We could not confirm whether the Town of Cornwall adds its own septic rules, or which parts of town are served by public sewer. The town code has sewer and water chapters, so ask the Building Department whether a parcel must connect to a municipal system before you plan a septic field⁵.

What stays with Orange County, and what to check before you buy

Orange County does not zone land and does not issue the town's building permits³. For land outside the town and its villages, see the Orange County page. Inside Cornwall, the county matters mainly for septic and sewage disposal⁴.

Before you buy, confirm the zoning district with the Building Department, ask the Planning Board whether a subdivision or site plan review applies, and ask the County Health Department about sewage disposal⁵⁷⁹. A driveway on a state highway needs a New York State Department of Transportation permit¹⁰.

Watch-outs

• We could not confirm the Town of Cornwall zoning district rules for RVs, tiny homes, lot size or setbacks; ask the Building Department at (845) 534-9429⁵.
• Orange County's lack of zoning does not make Cornwall land unregulated; the town zones inside its limits¹³.
• Septic review sits with the Orange County Department of Health, not the town Building Department⁴.

Sources

1. Town of Cornwall, NY eCode360 table of contents (Town of Cornwall), quoted and re-checked
2. Town of Cornwall, NY eCode360 table of contents (Town of Cornwall), quoted and re-checked
3. Map Resources | Orange County, NY, quoted and re-checked
4. Sanitary Engineering, quoted and re-checked
5. Town of Cornwall Building Department (cornwallny.gov)
6. Town of Cornwall, NY eCode360 table of contents (Town of Cornwall), quoted and re-checked
7. Town of Cornwall Planning Board (cornwallny.gov)
8. Legal Memorandum LG03: NYS Uniform Fire Prevention and Building Code: What Elected Officials Need to Know (New York statewide rule), quoted and re-checked
9. Orange County Department of Health, Sanitary Engineering (orangecountyny.gov)
10. Residential Driveway Permits (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.