North Dakota Building Codes, Permits and Contractor Rules
Here’s every rule from our 50-state guides for North Dakota on one page: the residential building code, frost depth, retaining wall permits, the 811 dig law, drainage law, contractor licensing, deposit limits, mechanics lien deadlines, workers’ comp, planting zones and frost dates. Each section links the official source and the full 50-state comparison.
North Dakota at a glance
- Building code: 2024 IRC (applies where locally enforced)
- Frost depth: Set locally; often 48-54 in.
- 811 notice: Locate period of 48 hours starting 12:01 a.m. the day after the request, excluding weekends and holidays (2 full business days)
- Contractors: State license required
- Deposits: No statewide cap
- Liens: 90 days from last furnishing
- Workers’ comp: 1+ employees (state fund only)
- Drainage rule: Reasonable use
- Planting zones: 3b to 4b
| Topic | North Dakota | Compare |
|---|---|---|
| Residential building code | 2024 IRC (applies where locally enforced) | All states |
| Frost line depth | Set locally; often 48-54 in. | All states |
| Retaining wall permit | Set locally (optional local enforcement; local amendments allowed) | All states |
| 811 notice before digging | Locate period of 48 hours starting 12:01 a.m. the day after the request, excluding weekends and holidays (2 full business days) | All states |
| Contractor license | State license required | All states |
| Deposit limit | No statewide cap | All states |
| Right to cancel | 3 business days, sales made at home | All states |
| Lien filing deadline | 90 days from last furnishing | All states |
| Workers’ comp required | 1+ employees (state fund only) | All states |
| Drainage between neighbors | Reasonable use | All states |
| Planting zones (2023 USDA) | 3b to 4b | All states |
| Frost dates (NOAA) | Last frost early May (Fargo) to late May (Williston); first frost late Sep at every station listed | All states |
North Dakota residential building code
- Code
- 2024 International Residential Code with North Dakota amendments (North Dakota State Building Code)
- How it applies
- Statewide, applies only where locally enforced
- In effect since
- January 1, 2026
- Code agency
- North Dakota Department of Commerce, Division of Community Services (Building Codes)
- Who enforces it
- Cities, counties and townships are not required to enforce a building code; those that do must adopt the State Building Code and may amend it for local needs.
- Good to know
- North Dakota's state code moved to the 2024 IRC on January 1, 2026, but only places that choose to enforce a building code use it. In rural areas, ask your county or township whether permits are required.
Compare building codes in all 50 states
Frost line depth in North Dakota
- Who sets it
- Local building department
- Local examples
- City of Fargo: 54 in. (4.5 ft)
City of Bismarck: 48 in. below finished grade
McKenzie County: 48 in. - Typical range
- 48-54 in.
- Good to know
- Fargo does not require footings for attached uncovered decks to reach its 54 in. (4.5 ft) frost depth.
Frost line depth in every state
Retaining wall permits in North Dakota
- Permit exemption
- Set locally (optional local enforcement; local amendments allowed)
- Who decides
- Your city, county or township decides, and only if it has chosen to enforce a building code.
- Good to know
- North Dakota's 2024 code took effect Jan. 1, 2026. It is enforced only where a city, county or township has chosen to enforce a building code.
Retaining wall permit rules in every state
811 dig law in North Dakota
- One-call center
- North Dakota One Call
- Notice before digging
- Locate period of 48 hours starting 12:01 a.m. the day after the request, excluding weekends and holidays (2 full business days)
- Ticket good for
- 21 days after the planned excavation date (re-request a locate if no excavation within 21 days)
- Hand-dig zone
- 2 ft (24 in.) on either side of the facility; dig manually within 24 in. of the outer edges of the marked facility
- Homeowners
- Yes, with depth exemptions: 'excavation' includes hand tools, but gardening and landscaping are excluded unless they disturb soil 12 in. or deeper, and farming unless 18 in. or deeper. No general homeowner exemption.
- The law
- N.D. Cent. Code ch. 49-23
- Good to know
- The law sets a 48-hour 'locate period' rather than an explicit lead time. Re-request a locate if you haven't dug within 21 days of the planned excavation date.
Drainage law and stormwater permits in North Dakota
- Rule
- Reasonable use
- The rule
- Reasonable use: a landowner acting in good faith may drain surface water onto another's land if there is a reasonable necessity for the drainage, reasonable care is taken to avoid unnecessary injury, and the benefit outweighs the harm; drainage done negligently or unreasonably can create liability.
- Leading case
- Young v. Hamilton. 332 N.W.2d 237 (N.D. 1983); following Jones v. Boeing Co., 153 N.W.2d 897 (N.D. 1967)
- What it means for your yard
- You can drain your land in good faith when it's reasonably necessary, but careless or unnecessary drainage that harms a neighbor can make you liable.
- State statute
- North Dakota also regulates drainage of ponds, sloughs and lakes by statute (the drain-permit statute discussed in Young, N.D.C.C. 61-01-22, was repealed in 1981; current drainage permit statutes were not checked).
- Construction stormwater permit
- North Dakota Department of Environmental Quality (DEQ): 1 or more acres of land disturbance (or smaller projects that are part of a larger development): NDPDES general permit NDR11
- State rules below 1 acre
- No statewide rule below the 1-acre permit found; check your county and town.
- Local rules
- North Dakota cities, counties and water resource districts may have their own drainage and grading rules.
- Good to know
- North Dakota allows good-faith drainage that is reasonably necessary, done with reasonable care and worth more than the harm it causes. State construction stormwater permits start at 1 acre.
Contractor licensing in North Dakota
- Statewide rule
- License
- Agency
- North Dakota Secretary of State – Contractor Licensing
- Who needs it
- Anyone doing a job whose cost exceeds $4,000 must hold a state contractor license (Class A-D, by maximum job size).
- When it applies
- Jobs over $4,000
- Check a contractor
- Official lookup
- Good to know
- License classes are set by job size under NDCC ch. 43-07: Class D up to $100,000 per job, Class C up to $300,000, Class B up to $500,000 and Class A over $500,000.
Contractor license requirements in every state
Contractor deposits and your right to cancel in North Dakota
- Deposit limit
- No statewide cap.
- Right to cancel
- Personal solicitation sales (in person or by phone, away from the seller's place of business; purchases under $25 excluded): until midnight of the third business day after signing. Buyers 65 or older may cancel a purchase of a product priced over $50 until midnight of the 15th business day, unless the agreement instead offers a full refund for at least 30 days (N.D.C.C. §§ 51-18-01, 51-18-02, 51-18-04, 51-18-08).
- Other protections
- A contractor is presumed to have abandoned the job if it doesn't substantially begin work within 60 days of a start date agreed in writing (or 90 days after the contract date if none), unless the delay is beyond its control; failing to fully refund the advance payment on request once that presumption arises is grounds for a complaint (N.D.C.C. § 43-07-14(1)(a), (f)).
- The law
- N.D.C.C. ch. 51-18 (Personal Solicitation Sales); ch. 43-07 (Contractors)
- Good to know
- North Dakota buyers 65 and older get 15 business days to cancel an in-home purchase of a product over $50. If a contractor doesn't substantially start within 60 days of a start date agreed in writing, the job is presumed abandoned, and refusing to refund your advance payment can be grounds for a complaint against the contractor.
Contractor deposit limits in every state
Mechanics lien deadlines in North Dakota
- Lien deadline (prime)
- Record with the county recorder within 90 days after the claimant's contribution is done (N.D.C.C. § 35-27-13). A late filing still binds the owner except for amounts already paid to a contractor and good-faith purchasers, but no lien may be filed more than 3 years after the first item was furnished (§ 35-27-14).
- Lien deadline (sub/supplier)
- Same as prime.
- Preliminary notice (sub/supplier)
- Not required.
- Notice of intent
- Required: written notice by certified mail to the owner that a lien will be claimed, at least 10 days before recording (N.D.C.C. § 35-27-02(4)).
- Enforce within
- Suit and lis pendens within 3 years after recording, or within 30 days after the owner's written demand is delivered and filed (N.D.C.C. § 35-27-25). Give the owner notice before suing: 10 days if personally served, 20 days by registered mail (§ 35-27-24).
- Homeowner rules
- An owner who successfully contests a lien's validity or accuracy must be awarded costs and attorney's fees (N.D.C.C. § 35-27-24.1).
- The law
- N.D. Cent. Code Ch. 35-27 (Construction Liens)
- Good to know
- North Dakota requires a certified-mail warning to the owner at least 10 days before a lien is recorded, and an owner who beats an invalid lien gets attorney's fees.
Mechanics lien deadlines in every state
Workers' comp requirements in North Dakota
- Who must carry it
- Employers must have coverage from the state fund, Workforce Safety & Insurance (WSI), before employees begin working, covering full-time, part-time, seasonal and occasional workers, with limited exceptions; North Dakota law does not allow private insurers to write workers' comp (NDCC § 65-04-33; WSI).
- Owners and officers
- Owners, partners, corporate officers and their spouses are exempt from mandatory coverage but can buy elective coverage from WSI (NDCC Title 65; WSI coverage types page). LLC member rules not stated on the page.
- Subcontractors
- A general contractor's subcontractors and independent contractors (and their workers) are deemed its employees, and the GC is liable for their unpaid premium and penalties for work done under it until the sub pays (NDCC § 65-04-26.2). A person performing services is presumed to be an employee (NDCC § 65-01-03(1)).
- Penalties
- Back premium, penalties and interest; liability for the actual cost and reserves of claims while uninsured, and workers can sue (NDCC § 65-04-33(4)); WSI cease-and-desist orders; $10,000 plus $100 per day penalty, and $5,000 plus $100 per day for a contractor who willfully uses a sub under a cease-and-desist order (NDCC § 65-04-27.2).
- The law
- NDCC Title 65; §§ 65-01-03, 65-04-26.2, 65-04-27.2, 65-04-33
- State agency
- North Dakota Workforce Safety & Insurance (WSI)
- Good to know
- North Dakota coverage must be bought from the state fund (WSI) before your employees start work. A general contractor can be billed for an uninsured sub's premiums.
Workers' comp requirements in every state
Planting zones in North Dakota
- 2023 USDA zones
- 3b to 4b
- Coldest-night range
- −35°F to −20°F
- Coldest area
- Along the Canadian border (e.g., Bottineau, Langdon)
- Warmest area
- The southwest corner (e.g., Hettinger)
- Example cities
- Fargo: 4a, Bismarck: 4a, Grand Forks: 4a, Minot: 4a
- Good to know
- Almost all of North Dakota moved from zone 3 to zone 4 in 2023. Only a strip along the Canadian border is still zone 3b.
Frost dates in North Dakota
| Station | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Fargo Red River Valley, southeast | May 10 | September 30 | 143 |
| Grand Forks Red River Valley, northeast | May 16 | September 27 | 133 |
| Bismarck South-central | May 14 | September 27 | 136 |
| Williston Northwest | May 21 | September 21 | 123 |
- Typical range
- Last frost early May (Fargo) to late May (Williston); first frost late Sep at every station listed
- Good to know
- These are typical (50%) dates from NOAA's 1991–2020 climate normals, so about half of years still bring a 32°F night after the listed spring date. In North Dakota, the last spring frost at the stations listed ranges from early May around Fargo to late May around Williston.
- Local frost or planting guide
- North Dakota State Climate Office (NDSU)
Frequently Asked Questions
What building code does North Dakota use?
2024 International Residential Code with North Dakota amendments (North Dakota State Building Code). It applies as follows: statewide, applies only where locally enforced. Your local building department can confirm the edition and amendments for your address.
How deep is the frost line in North Dakota?
Frost depth is set by local building departments. Typical local values: 48-54 in.. Footings for houses, additions and attached decks go below it.
How much can a contractor ask for up front in North Dakota?
No statewide cap. Cancel rights: Personal solicitation sales (in person or by phone, away from the seller’s place of business; purchases under $25 excluded): until midnight of the third business day after signing. Buyers 65 or older may cancel a purchase of a product priced over $50 until midnight of the 15th business day, unless the agreement instead offers a full refund for at least 30 days (N.D.C.C. §§ 51-18-01, 51-18-02, 51-18-04, 51-18-08).
How long does a contractor have to file a mechanics lien in North Dakota?
Record with the county recorder within 90 days after the claimant’s contribution is done (N.D.C.C. § 35-27-13). A late filing still binds the owner except for amounts already paid to a contractor and good-faith purchasers, but no lien may be filed more than 3 years after the first item was furnished (§ 35-27-14). Subcontractors and suppliers may have different notice rules; see the section above.
What planting zone is North Dakota?
On the 2023 USDA map, North Dakota runs from zone 3b to 4b. Examples: Fargo 4a, Bismarck 4a, Grand Forks 4a. Enter your ZIP on the USDA map for your exact zone.
Do contractors need workers' comp in North Dakota?
Employers must have coverage from the state fund, Workforce Safety & Insurance (WSI), before employees begin working, covering full-time, part-time, seasonal and occasional workers, with limited exceptions; North Dakota law does not allow private insurers to write workers’ comp (NDCC § 65-04-33; WSI). Owner exemptions and subcontractor rules are in the workers’ comp section above.
When is the last frost in North Dakota?
At the NOAA stations we list: Last frost early May (Fargo) to late May (Williston); first frost late Sep at every station listed. These are typical (50%) dates from the 1991–2020 climate normals, so about half of years still bring a 32°F night after the spring date.
This page is general information, not legal or tax advice. Rules change; the agencies and statutes linked above have the final word.
North Dakota in each 50-state guide: Frost line depth · 811 dig laws · Retaining wall permits · Contractor licensing · Contractor deposit limits · Building codes · Planting zones · Mechanics lien deadlines · Workers' comp · Frost dates · Drainage laws · Noxious weed laws · Rainfall and snowfall · Landscaper pay · Pesticide applicator licensing · Landscaping sales tax · All state guides
Last checked October 31 and November 1, 2026 against official state and local sources for this state. Rules change; your state agency or local building department has the final word. Spot something out of date? Email info@muthlerlandscaping.com and we’ll fix it.
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Cite as: Muthler Landscaping & Construction, “North Dakota Building Codes, Permits and Contractor Rules,” https://muthlerlandscaping.com/state-guides/north-dakota/ (last checked November 9, 2026).
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