Tiny Homes

L&I is the building department for the construction of tiny homes that are built at offsite locations, such as a factory or even a back yard. L&I reviews plans and inspections for tiny homes built offsite from where they will be placed.

NOTE: The design of your tiny home must also meet local building deparment criteria. Contact your local building department for their requirements and permit information.

To get a tiny home approved:

First, Download and review the tiny home information packet. It includes the standards to which you need to design, plan, and build your tiny home.

We will need 3 copies of your plans. Plans must be stamped by a Washington professional engineer (PE) or architect.

Next, fill out these applications:

Finally, include payment of $745.10 for plan review and insignia. We will notify you if we need more information or when your plans are approved.

Mail the completed packet to:

Department of Labor & Industries
Factory Assembled Structures
7273 Linderson Way S.W.
P.O. Box 44430
Olympia WA 98504-4430

You can also submit your plans at your local L&I office, and pay the fee by cash, check, money order, Visa, or Mastercard.

Notice: Because of the large number of requests, it can take several months for L&I to review plans. We will notify you if we need more information or if your plans have been approved.


Next, do the work.

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