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Prefab Guest Houses: Backyard Guest Suites Delivered
A prefab guest house solves a specific problem: you want visitors — family, friends, in-laws — to have real private space with their own bathroom, without a year-long construction project in your backyard. Prefabia guest houses are expandable container homes: factory-built with the bathroom, kitchen area, insulation, wiring, and plumbing installed before delivery, then unfolded on your prepared site into a complete, comfortable guest suite.
What People Use Them For
A true guest suite. Visitors get privacy, their own bathroom, and space to make coffee in the morning — and you get your house back in the evening.
In-law space. For longer or recurring family stays, a separate unit keeps everyone close without the friction of one shared roof — if you are considering permanent multigenerational living, our prefab ADU guide covers the full dwelling angle.
Extra space on family land. On acreage, a guest house doubles as holiday-gathering overflow and an occasional rental where local rules allow.
Why Prefab Works So Well for Guest Houses
A guest house is exactly the kind of project that rarely justifies a full custom build — which is why factory-built wins here. The unit arrives essentially finished, setup on a prepared site is a matter of days rather than a construction season, and the price is a fixed, quoted number rather than a contractor estimate that grows (see current price ranges — 20ft models list from around $16,000 before delivery).
Which Prefabia Models Fit Guest House Use
The 20ft range is the classic guest house pick: complete interior, compact footprint. The MOB Melba 20ft is our most popular guest-house choice, the glass-front MOB Glaze 20ft gives a premium boutique-stay feel, and the Porch Oakline 20ft adds a covered porch guests genuinely use. Hosting longer stays or bigger family groups? Step up to the 30ft range for more separation between sleeping and living space.
What to Consider Before Buying
Size. Check each model’s expanded footprint against your available yard space — dimensions and floor plans are on every product page.
Bathroom and kitchen needs. All our models include bathroom and kitchen areas fitted at the factory; for pure guest use, the question is layout — compare floor plans for how sleeping, bathing, and living space divide.
Site access and utilities. The delivery truck needs to reach your backyard or parcel, and the unit needs water, sewer or septic, and power connections — our delivery & installation guide walks through exactly what to prepare.
Local rules. How a guest house is classified — accessory structure, ADU, dwelling — depends on your jurisdiction and how it will be used, and that classification drives permits. Start with our permit guide, then confirm with your local office; we supply full specification sheets and never promise approval.
Prefab Guest House FAQ
How much does a prefab guest house cost?
Our 20ft models — the usual guest-house size — currently list from around $16,000 before delivery, with delivery quoted by ZIP code. See the price guide for ranges across all sizes.
Does it come with a bathroom?
Yes — every Prefabia model ships with bathroom and kitchen areas installed at the factory, along with insulation, wiring, and plumbing. Exact configurations are on each product page.
Do I need a permit for a backyard guest house?
Usually some approval is involved, and the rules depend on your jurisdiction and how the unit is classified and used. Read our permit guide, then check with your local planning office — we provide specification sheets to support the conversation, but approval is always a local decision.
Can guests stay in it year-round?
The units are insulated and fitted for year-round use — review each model’s insulation and structural ratings against your climate, and pair with appropriately sized heating and cooling.
Can I rent it out when guests are not visiting?
Many owners do, where local rules allow — rental use often changes how the unit is classified, so confirm with your jurisdiction before planning around rental income.
Get a Guest House Quote
Send your ZIP code and preferred model — we will reply with delivered pricing, the floor plan, and full specifications.
Request a Free Quote | Contact Us | WhatsApp +1 (510) 312-3268
Related: prefab home ideas · how expandable container homes work · prefab ADUs