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Whatcom County, WA Building Safety: Building Inspections (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Inspection 1
Footing, before concrete is poured
Inspection 2
Tie-down, blocking, vapor barrier
Inspection 3
Final, before occupancy
Notice required
1 working day before inspection
Misdemeanor penalty
Up to $1,000 or 90 days

Summary

Installing a manufactured or mobile home in unincorporated Whatcom County runs through three required inspections under WCC § 15.04.030(G)(6): footing, then tie-down/blocking/vapor barrier, then final. The home can't be occupied until it clears the final inspection.

City-specific rules exist: Bellingham has its own building inspections rules that differ from Whatcom County's county-level regulations. If you live in Bellingham, check the city-specific page instead.

a. The installer of the manufactured/ mobile home shall request the following inspections: i. Footing inspection, after the placement of the footing forms and rebar but prior to pouring concrete or placing the footings. ii. Tie-down, blocking, and vapor barrier inspection, iii. Final inspection, after all aspects of the installation have been completed. iv. All requests for inspection shall be made one working day before such inspection is desired. b. The manufactured/mobile home may be occupied once the installation has passed final inspection for compliance with the requirements of this chapter and any conditions placed upon the issued permit.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4963078; v4 updated 2026-06-23; through 06-23-2026).

Full Breakdown

The installer, whether the homeowner or a licensed manufactured home installer, must request the footing inspection after the footing forms and rebar are in place but before any concrete is poured, then a separate tie-down, blocking, and vapor-barrier inspection, and finally a final inspection once every part of the installation is complete. Every inspection request must reach PDS Building Services at least one working day before the inspection is wanted. Occupancy is tied directly to that last step: the home can only be lived in once the installation has passed final inspection and met every condition on the issued permit.

If an inspection turns up work that doesn't comply with the chapter or the permit conditions, the local enforcement agency issues the installer a list of required corrections with a completion deadline; if the outstanding items don't threaten health, safety, or habitability, the agency can still let the owner occupy the home while corrections are pending. This inspection sequence sits inside the county's manufactured-home chapter (replacing IRC Appendix E) and applies alongside the footing, foundation, and anchoring standards set out earlier in the same section, including the requirement that footings be installed below the frost line and evenly bedded on undisturbed, compacted soil.

Violations & Fines

Installing or occupying a manufactured or mobile home without obtaining the required building permit, or before it passes the required inspections, exposes the installer to the general construction-without-permit consequences in WCC § 15.04.050(B): the county can deny further permits for the site until the issue is resolved and can require the site restored to its original condition. Beyond that, any violation of this title is a misdemeanor under WCC § 15.04.050(D), punishable by a fine of up to $1,000, up to 90 days in jail, or both, with each day of noncompliance a separate offense.

Frequently Asked Questions

What inspections does a manufactured home installation need in Whatcom County?
Three, under WCC § 15.04.030(G)(6): a footing inspection after the footing forms and rebar are placed but before concrete is poured, a tie-down/blocking/vapor-barrier inspection, and a final inspection once the entire installation is complete. Each inspection must be requested from Planning and Development Services at least one working day in advance.
Can I move into a manufactured home before the final inspection?
No. WCC § 15.04.030(G)(6)(b) states the home may be occupied only once the installation has passed final inspection for compliance with the chapter and any conditions on the issued permit, though the enforcement agency has discretion to allow occupancy while minor, non-safety corrections are still pending.
What happens if my manufactured home installation fails inspection?
The local enforcement agency gives the installer a written list of required corrections and a deadline to complete them, per WCC § 15.04.030(G)(6)(c). If the outstanding items don't endanger occupant health or safety or substantially affect habitability, the agency may still permit the owner to occupy the home while those corrections are finished.

Sources & Official References

Other rules in Whatcom County

All Whatcom County rules

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