Jefferson County, New York
Town of Theresa is a town in Jefferson County, New York. Town of Theresa adopts its own zoning, so inside its limits Town of Theresa’s rules apply, not the county’s. Septic permits inside Town of Theresa come from Town of Theresa. 9 rules below are quoted from official sources and independently re-checked, most recently on November 9, 2026. Rules for unincorporated land are on the Jefferson County page.
Most residential and commercial construction, including alterations, conversions, and renovations, inside the Town of Theresa.
“A Building Permit is required in the Town Of Theresa for: • Most types of residential and commercial construction including alterations, conversions, and renovations to existing structures.”
Land inside the Town of Theresa, Jefferson County, New York.
“For the purpose of this Law, the Town of Theresa is hereby divided into the following zones or districts.”
Land inside Theresa town.
“AR - Agricultural - Residential CAR- Conservational - Agricultural - Residential BC - Business Corridor PDD - Planned Development District”
Recreational camper vehicles, travel trailers, and converted buses in every district in Theresa town.
maximum temporary residential occupancy: <= 30 days per calendar year (Requires a zoning permit issued by the Zoning Officer each year.)
“Recreational Camper Vehicles, Travel Trailers, and Converted Buses may be used for temporary residential purposes for no more than 30 days in any calendar year, in accordance with a zoning permit issued by the Zoning Officer each year.”
Proposed construction, alteration, or extension of a sewage-disposal system inside Theresa town.
“Town of Theresa, New York Sewage Disposal Permit Application”
Installation of septic and leach-field systems inside Theresa town.
“Installation of all mobile homes, modular homes and home packages, all wood stoves, fireplace inserts, heating units, pools, all electrical work, installation of septic and leach field systems.”
Sewage disposal from recreational vehicles and trailers inside Theresa town.
“Sewage disposal from such vehicles and· trailers shall be disposed of in an environmentally acceptable manner (i.e. by temporary connection to an approved septic system, by storage tank(s) to be pumped out at an approved disposal station, or by approved self-contained maceration and incineration system) in accordance with the regulations of the New York State Department of Health.”
Divisions of land inside Theresa town.
“Planning Board approval is required for all divisions of land as specified in Town Subdivision Law.”
Town building, septic, and zoning permit applicants.
manufactured-home permit fee: 80 USD · septic-system installation fee: 60 USD · zoning permit fee for new buildings, additions, decks and porches: 25 USD
“Manufactured Home Permit $80.00 [...] Installation of Septic system $60.00 [...] All new buildings, additions, decks and porches $25.00”
We looked and could not find an official answer yet. Silence is not permission; ask Town of Theresa or Jefferson County directly.
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 Town of Theresa publishes no rule on the point, not that none exists. Jefferson County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Town of Theresa means bringing your own water and power. The kit we’d start with:
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