Tiny Home & ADU (accessory dwelling unit) FAQs

Typically no. Most Wolf homes use a 6-inch concrete stem-wall foundation, two feet tall, similar to a site-built house. We may discuss post-and-beam construction when the property calls for it.

No. What we permit as a dwelling is a modular home on a permanent foundation. It isn’t an RV or a HUD manufactured home, and a unit used as a trailer generally isn’t a permitted dwelling.

Published plans include Model B (307 sq ft, 10×30, one bed, City of Portland only), Model K (432 sq ft, 12×36, one bed), Models E and F (616 sq ft, 14×44, two bed), Model J (828 sq ft, two bed / two bath), Model L (984 sq ft, two bed / two bath), and Model I (1,232 sq ft, three bed). Sizes run from 307 to 1,232 sq ft.

Model I, at 1,232 sq ft with three sleeping rooms and two baths.

All current Wolf plans are single-level and do not include sleeping lofts. A storage loft may be considered for an individual project, but it is not a standard option.

A foundation-set modular home can be relocated later with the right permits and a CDL (commercial driver’s license) crew. Moving one is a construction project, like the original placement. If you expect to relocate the home, mention it at the evaluation.

Factory production typically takes three to four weeks once the home enters production. Permitting often takes two to nine months, and most projects take roughly a year from proposal to completion. A three-to-six-month turn-key promise is usually not realistic.

Manufactured and mobile homes are built to the federal HUD code on a permanent chassis. Wolf builds modular homes to IRC/IBC residential code, state-inspected at the factory, then set on a permanent foundation. They permit, finance, and insure like a conventional house.

On Washington and Oregon projects, Wolf’s field crew handles delivery and setup as the default. We can coordinate with a contractor you already have; say that at evaluation. Exceptions happen on wells, septic, or specialized trades. Outside Washington and Oregon, a local contractor handles site work when a project proceeds. Wolf builds and delivers modular homes for select California projects, and they take more work than a Washington or Oregon job. Title 24 adds its own energy review, and the Title 24 filing must list an outside contractor. We don’t have a standing HCD-approved model, so the drawings for each California home go through HCD approval on their own. You also need a qualified local contractor for the site work, and lining one up is part of planning the project. We price and schedule each California home on its own. We have delivered homes to Santa Rosa and Petaluma in Sonoma County and to St. Helena in Napa County.

On Washington and Oregon jobs we can collaborate. Outside those states, a local contractor handles site work when a project proceeds. Either way, the home still has to land on a foundation and utility path that the jurisdiction will inspect.

It depends on the site. Where there’s room, the home is backed in on its trailer and slid onto the prepared stem wall. Where access is tight, a crane lifts each section into place. We pick the method during the property evaluation, and the field crew coordinates route, staging, and set. The delivery and setup page walks through that day.