Zoning, building permits and septic rules in Thompson, North Dakota
Thompson is a city in Grand Forks County, North Dakota. Thompson adopts its own zoning, so inside its limits Thompson’s rules apply, not the county’s. 3 rules below are quoted from official sources and independently re-checked, most recently on November 11, 2026. Rules for unincorporated land are on the Grand Forks County page.
Answers from the rulebook for Thompson
Thompson’s own rules
Building permitRequired
Construction inside Thompson city limits
Examples are not exhaustive ('include, but are not limited to').
Permit expires if work is not completed within one year of approval.
“examples of work requiring a permit include, but are not limited to: any new construction (houses, garages, and permanent storage buildings)”
Local zoningPresent
Land inside Thompson city limits
Evidence is the city's planning/zoning page listing a zoning application and zoning map; the zoning ordinance text itself was not opened.
“building permit application planning and zoning application sanitary sewer property owner process thompson zoning map floodplain development permit application and determination”
Permit processPublished (with conditions)
Building permit applications inside Thompson city
Applications go to city hall; reviewed by building inspector or city council.
Approved work must be completed in one year or permit expires.
permit validity: 1 year
“permit applications are to be turned into city hall. the application will then be reviewed by the building inspector or city council for approval. if approved, work must be completed in one (1) year or the permit shall expire.”
Still unanswered
We looked and could not find an official answer yet. Silence is not permission; ask Thompson or Grand Forks County directly.
Owner-builder exemption — Thompson city
Building code adopted — Thompson city
Inspections — Thompson city
Certificate of occupancy — Thompson city
Zoning districts — Thompson city
22 more unanswered
Minimum dwelling size
Minimum lot size
Setbacks
Lot coverage
Building height
Living in an RV
Camping on your land
Tiny homes
Manufactured homes
Accessory dwellings
Who permits septic
Septic permit
Septic inspection
Off-grid sanitation
Well permit
Mandatory utility hookup
Agricultural exemption
Subdividing land
Driveway access
Building in a floodplain
Short-term rentals
Permit fees
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 Thompson publishes no rule on the point, not that none exists. Grand Forks County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Thompson means bringing your own water and power. The kit we’d start with:
