Delaware County, Ohio
Thompson Township is a township in Delaware County, Ohio. Septic permits inside Thompson Township come from Thompson Township. 3 rules below are quoted from official sources and independently re-checked, most recently on November 7, 2026. Rules for unincorporated land are on the Delaware County page.
Thompson Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Construction and other listed regulated building work inside Thompson Township, Delaware County, Ohio, administered by Delaware County Building Safety.
initial permit validity if work has not commenced: 12 months (One additional 12-month extension is granted if requested at least 10 days before expiration and required fees are paid.) · work-delay threshold causing invalidity: > 6 months (Two six-month extensions are granted if requested at least 10 days before expiration and required fees are paid.)
“shall first make application to the building official and obtain the required permit.”
Land inside Thompson Township, Delaware County, Ohio; zoning is administered by Delaware County rather than by a Thompson Township zoning authority.
“Zoning Resolution, applicable to Marlboro, Radnor, and Thompson Townships in Delaware County”
Household sewage treatment systems on land inside Thompson Township, Delaware County, Ohio, where connection to a sanitary sewer system is not feasible.
installation permit validity: 1 year
“serving Delaware County (except portions annexed to Westerville, Columbus, and Dublin) [...] granting an operational permit for a household sewage treatment system”
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.
Off-grid gear
Going off-grid in Thompson Township means bringing your own water and power. The kit we’d start with:
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