Bismarck

Burleigh County portion

ADU Pass helps homeowners in Bismarck, Burleigh County, North Dakota navigate the permit paperwork for building an accessory dwelling unit. This area covers 5 ZIP codes.

5 ZIP codes

ADU details

ADU legality: unclear

Stateunclear (North Dakota accessory-dwelling framework) — North Dakota statewide ADU posture per state-adu-research file.
Countywith-restrictions (Burleigh County unincorporated zoning) — Burleigh County permits ADUs in unincorporated areas under state-law-aligned standards. Within Bismarck city limits the city ordinance plus state law govern.
Citywith-restrictions (City of Bismarck Municipal / Zoning Code — Accessory Dwelling Units) — City of Bismarck permits ADUs under the local ordinance aligned with North Dakota statewide framework where applicable.

North Dakota leaves ADU regulation to local municipalities under home-rule or Dillon-rule authority. Bismarck permits ADUs subject to local conditions per its zoning ordinance.

Cost scenarios

ScenarioSq ft PermitBuildTotal
minimum 150 $1,700 $30,000 $31,700
600 600 $1,700 $120,000 $121,700
midpoint 525 $1,700 $105,000 $106,700
maximum 900 $1,700 $180,000 $181,700
Fee breakdown
Plan review$510
Building permit$935
Impact fees$255
Total$1,700

Viability (permitted uses)

  • Long-term rental: yes Long-term rental of ADU generally permitted; landlord-tenant law and any city rental-registration ordinance apply.
  • Short-term rental: with-restrictions STR rules vary by city. Bismarck regulates STRs separately from ADU permitting; check local STR ordinance and HOA covenants.
  • Office rental: with-restrictions Detached office rental requires home occupation permit or rezoning.
  • Home office: yes Home occupation permitted with restrictions on signage and customer traffic.
  • Studio / workshop: yes Personal artist studio is a permitted accessory use.
  • Agriculture: with-restrictions Limited urban agriculture permitted in residential zones; livestock varies by district.
  • Relative support: yes Family-occupancy ADU explicitly permitted in single-family zones.

Utilities

  • Water: Bismarck Water Utility · 30d connect · $4,500
  • Sewer: Bismarck Sewer / Wastewater · 30d connect · $5,500
  • Electric: Bismarck Electric Utility · 21d connect · $1,800
  • Gas: Bismarck Gas Utility · 30d connect · $1,500

Property values & taxes

Median value$285,000
Median tax$2,880/yr
Effective rate1.0%

Construction timeline

Detached build24 weeks
Conversion14 weeks
Contractor lead3 months

Realistic total: best 7mo · typical 10mo · worst 16mo

Financing

Fannie Mae ADUeligible

Insurance impact

Annual premium delta$380
Landlord policyrecommended
Umbrella threshold$1M umbrella when renting

HOA prevalence & preemption

State HOA preemptionno

North Dakota has no statewide statute that voids HOA bans on ADUs. Common-interest communities in North Dakota are governed primarily by the North Dakota Condominium Ownership Act (N.D.C.C. Chapter 47-04.1) for condominiums and by general nonprofit corporation law for HOA-style planned communities. Restrictive covenants in declarations and bylaws — including those prohibiting accessory structures or secondary kitchens — remain enforceable per their terms.

Technical envelope (climate & building code)

Climate & energy code

IECC climate zone6A
Heating degree days7,200
Cooling degree days600
Frost depth42"
Design snow load40 psf
Wind design speed105 mph
Seismic design cat.A
Annual rainfall38"
Wildfire exposurelow
Energy codeIECC
Version / adopted2015 / 2017

Building code

Base codeIRC
Version year2,015
Adopted2017
Fire sprinklernone
Egress window5.7 sqft min
Min ceiling7 ft
Attic R-valueR-49 min
Wall R-valueR-21 min

Amendments:

  • Amendment
  • Amendment
Burleigh County — county ADU rules and overlays

County ADU ordinance

Burleigh County (state-capital county; ~99,000 residents — south-central North Dakota; encompassing Bismarck, Lincoln, Wilton, Baldwin, Menoken, Regan, McKenzie, and unincorporated tracts in the Missouri Coteau and Missouri River valley) regulates land use in unincorporated areas through the Burleigh County Zoning Ordinance, administered by the Burleigh County Planning Commission and the County Auditor's office. North Dakota has no statewide ADU preemption — North Dakota's stateAduLaw is netEffect 'no-statewide-law' — and the state delegates zoning authority to counties (NDCC Ch. 11-33) and municipalities (NDCC Ch. 40-47). The Burleigh County Zoning Ordinance permits 'accessory residential dwellings' in agricultural and large-lot residential districts (A, R-A, R-1) by right on parcels of typically 1+ acres subject to size limits (commonly 1,000 sq ft or 50% of principal dwelling), one-per-lot limit, and parking. Smaller residential districts treat ADUs as conditional uses requiring Board of Adjustment approval.

County regulatory overlays

Federal (United States) — ADU-relevant rules and programs

Federal ADU law

The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.

Federal financing programs

Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.

Federal tax credits

There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.

Federal housing programs

HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.

ZIP Codes

  • 58501
  • 58503
  • 58504
  • 58521
  • 58558

Post Office

  • 403 Airport Rd, 58504

Locale Names

  • Bismarck Nd Sdc