Building permits, zoning and septic rules in Delaware County, New York

Yes, covered construction in Delaware County must go through a building-permit process under New York's Uniform Code or Energy Code, but the authority is the town or village where the parcel lies rather than a single county building department^2,5. A local code-enforcement program may exempt limited categories, including a qualifying one-story detached shed or similar accessory structure no larger than 144 square feet, but exempt work must still comply with the codes². Permit work is subject to construction inspections, and the permit holder must keep required work accessible until it is inspected and accepted². Permit applications filed on or after December 31, 2025 must comply with the 2025 New York State Uniform Code⁸. A building or portion covered by a permit generally cannot be occupied until the local authority issues a certificate of occupancy or certificate of compliance².

The applicable town or village administers building permits in Delaware County, so identify the municipality before requesting forms, fees or an inspection schedule⁵. The county does not issue building permits: those go through municipal code-enforcement programs, county right-of-way work goes to the Delaware County Department of Public Works, and septic matters go to the state health department¹. The Delaware County Planning Department, which assists local planning boards but is not the zoning authority, can be reached at PO Box 367, Delhi, New York 13753 or (607) 832-5444⁹. A permit application must identify the work location and scope, tax-map number, street address, occupancy classification and acceptable construction documents; site plans, building systems, energy compliance and flood information may also be required¹⁰. Local fees can differ, so request the current schedule from the municipal code office rather than treating the state Department of State schedule as a county fee¹¹. Delaware County has no confirmed owner-builder permit exemption, so an owner doing the work should ask the local code office what permits, licensed design documents and inspections apply⁶. The one owner rule we found is narrow: a person who will own and occupy a manufactured home may seek certification under 19 NYCRR Part 1210 to install it, supervised by a certified installer, which is not a general exemption from building permits⁶.

Zoning exists in Delaware County, but towns and villages administer it rather than one countywide zoning office, and requirements can differ by town, village, zoning district and parcel^3,5. Parcel questions about setbacks, minimum dwelling size, minimum lot size, building height, lot coverage, accessory dwellings, RV use and tiny homes therefore need an answer from the specific town or village code office⁵. Delaware County's countywide rules on those subjects could not be confirmed, so do not assume that a rural parcel is unrestricted. Subdivision review also depends on local authorization: outside an incorporated village, a town board may empower its planning board to review preliminary and final plats¹². For land in a FEMA-identified Special Flood Hazard Area, private development is subject to a locally administered floodplain development permit in addition to other approvals⁷. Substantial improvement or damage is measured at more than 50% of the structure's market value⁷.

Delaware County is a partial-service county, so environmental-health questions involving septic systems, drinking water and site assessments go to the New York State Department of Health's Oneonta District Office⁴. The office is at 28 Hill St., Suite 327, Oneonta, NY 13820 and can be reached at 607-432-3911¹³. State Department of Health approval of wastewater-disposal plans is required before construction¹⁴. A sewage-wastewater system discharging less than 1,000 gallons per day to groundwater, with no industrial or other non-sewage waste, does not require a state DEC SPDES permit, though other DEC approvals may still apply^14,15. We could not confirm the exact design or inspection steps, so ask the Oneonta office what must happen before excavation. Only about 0.7% of county soils are rated without severe limitations for a conventional septic drain field, so make septic feasibility an early purchase contingency¹⁶.

No countywide Delaware County rule confirming RV occupancy, temporary camping or tiny-home occupancy could be established. Because zoning is administered by towns and villages, ask the code-enforcement office for the parcel's municipality whether the proposed use is allowed and what setbacks, duration limits, utility rules or permits apply⁵. A tiny home used as a dwelling should not be confused with the state's narrow accessory-structure exemption, which can cover only a qualifying one-story detached shed, playhouse or similar structure no larger than 144 square feet when the local authority chooses to exempt it². If the project is permit work, inspections and a certificate of occupancy or compliance apply before lawful occupancy². Ask the Oneonta District Office separately about wastewater and drinking-water arrangements⁴.

1. Confirm the parcel's town or village, then ask that municipality's code office for zoning, the current fee schedule and its building-permit forms⁵.

1. Contact the NYSDOH Oneonta District Office about the site's septic and drinking-water review before fixing the house location^4,13.

1. Check whether any proposed development lies in a Special Flood Hazard Area and obtain the locally administered floodplain development permit when required⁷.

1. Submit the tax-map number, street address, project scope and acceptable construction documents with the building-permit application¹⁰.

1. Keep covered work exposed and schedule the required construction inspections with the issuing authority².

1. If the driveway meets a county road, apply to the Department of Public Works for an access permit before work starts^1,17.

1. Obtain a certificate of occupancy or certificate of compliance before using the completed permitted home².

Verify the town or village first, because the permitting office and zoning rules change with municipal boundaries⁵. Test septic feasibility early: only about 0.7% of county soils are rated without severe limits for a conventional drain field¹⁶. Review terrain and clearing costs at the parcel level because about 50.8% of county land has a slope of 15% or less and about 86.7% is wooded¹⁶. Check mapped flood hazards because development in a Special Flood Hazard Area needs a local floodplain development permit alongside other approvals⁷. A new driveway onto a county road needs an access permit from the Delaware County Department of Public Works, which can be reached at 607-832-5800; county right-of-way is typically no less than 25 feet from the road centerline and may extend farther^1,17. Budget for carrying costs using the county benchmarks of an effective property-tax rate near 1.7% and a median annual property-tax bill around $3,059¹⁶.