Prefab Granny Pods and Studio Pods 2026: Pod or ADU Permit

If you want a backyard pod a guest can sleep in, the cheapest unit here with a bathroom and a kitchen in the price is the Amish Built Cabins El Poco Loco at $69,900 for 480 square feet. That’s a sale price, down from $79,900. The lowest price on the list is $18,900, shared by the Autonomous MetroPod (80 square feet, no bathroom, no kitchen) and the Kanga Room Systems 10x12 shell kit. The kitHAUS k3.12 is the smallest unit with both rooms, at $84,000 for 169 square feet, and kitHAUS itself labels it an accessory dwelling unit (ADU).

Check the category before the price. In Portland, Oregon, a small heated accessory structure can skip the building permit only if it has no kitchen and nobody sleeps in it or runs a business from it. A unit with a bed or paying guests needs a permit for that use. Every figure below comes from the maker’s own page or a city page.

The Ranked Table

Ranked on published price, lowest first.

The Amish Built Cabins page shows a “Sold out” label, but the store’s product data lists the unit as available at $69,900. Confirm with the maker.

What Each Price Leaves Out

No 2 of these prices cover the same work, so read the exclusions before the ranking.

• Autonomous. Installation is a choice of DIY or “Pro install,” and the pro install price is not published. The StudioPod sits on grass, gravel, or concrete without a slab, and the MetroPod runs on a single power line from the main house.
• Kanga Room Systems. On the Kwik Room page, turnkey means “Fully finished interior + exterior” and is “Available in most parts of Texas.” Outside Texas, you buy the shell kit, which is “flat-packed and shipped to your location (Continental U.S.).” An installed shell for the 10x12 costs $24,700, in Texas only. Kanga gives 6 to 12 weeks for a turnkey ADU studio build, “depending on location and permitting.”
• kitHAUS. The delivery charge is “TBD based on location.” Installation by kitHAUS is about 15% of the module price on a project without a permit and 20% to 24% on a permitted one, because “Site conditions will vary depending on permitted or non-permitted project.”
• Amish Built Cabins. Shipping is “calculated at checkout.” The page says the unit “can be set up anywhere in the U.S.” subject to deed restrictions and is built to meet your state’s code. Foundation and setup are not mentioned.

As an example only, the kitHAUS installation share on the $84,000 k3.12 is $12,600 at 15% and $16,800 to $20,160 at 20% to 24%. The permit adds $4,200 to $7,560 to installation alone, before the permit fee.

Pod or ADU, the Permit Decision

Your city’s category for the structure decides whether it needs a permit and how you can use it. The City of Portland, Oregon, publishes both halves of the rule.

Portland’s Building Official Determination 21-05, effective June 10, 2021, and revised March 11, 2024, states that the Oregon Residential Specialty Code (ORSC) “does not require a building permit for non-habitable detached one-story accessory structures” with a building area of 200 square feet or less. Portland exempts a heated accessory structure within those limits only if it meets all 3 conditions:

1. No kitchen.
2. No overnight sleeping.
3. No business use, including licensed child care and home-based businesses under a Home Occupation Permit.

The exemption covers the structural permit only. Electrical, mechanical, and plumbing permits still apply when the work needs them.

Portland’s short-term rental permit page lists the buildings that can be rented. It includes “Accessory dwelling units (ADU) that have been legally created” and “Detached accessory structures that have been legally updated or built for sleeping purposes.” The rental inspection checks that “The bedrooms were legally created as sleeping rooms.”

So in Portland, a pod built under the size exemption can’t be slept in or rented until it is permitted as a sleeping structure or an ADU. The StudioPod page says “drop a bed and it’s a guest room,” and in Portland that bed ends the exemption. The kitHAUS k3.12 comes with a two-burner cooktop, so ask Portland whether its kitchenette counts as a kitchen under the first condition.

Your city sets its own size threshold and conditions. Ask your city before a guest sleeps in one.

What the Table Says

The 2 cheapest pods have no bathroom or kitchen. The MetroPod at $18,900 and the StudioPod at $22,900 list neither, and Autonomous says both sit below the permit threshold in most US cities. Use them as offices unless your city approves them for sleeping.

A bathroom and kitchen move a small pod into the ADU price range. kitHAUS goes from $45,000 for the 120-square-foot k3.8 basic to $84,000 for the 169-square-foot k3.12 with both rooms, and the maker calls the second one an ADU. Price the unit you can legally rent.

A permitted project costs more to install. kitHAUS publishes 15% of the module price without a permit and 20% to 24% with one. Ask every maker for both figures before you pay a deposit.

Before You Order

3 checks, in this order.

1. Ask your city which category the unit falls into. Send the planning office the floor plan. Ask whether it is an exempt accessory structure, a sleeping structure, or an ADU, and whether that category can be rented for under 30 days. The zoning rules guide shows where to look first.
2. Price the site work. Run the lot through the site-prep cost estimator. Foundation, trenching, and utility runs sit outside most prices above. The cost of prefab homes guide lists them line by line.
3. Confirm the loan. Start with the lender locator. Tell the lender whether you’re buying a shell kit or a finished unit.

Larger finished units are in the 8 best prefab cabins, rated. A small backyard structure run as a rental is the subject of the Home Depot shed playbook. For related comparisons, see prefab ADUs and small prefab homes.

Host Camp is not a licensed tax, legal, or financial adviser. Confirm figures for your situation with a professional.

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