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Residential ADUs

Compact homes for everyday living, family use, rentals and backyard housing.

Accessory dwelling units are the most regulated corner of the prefab market — and one of the most interesting. A backyard home has to satisfy the same building department as the house in front of it, plus local ADU rules on size, setbacks, height and utility connections.

A compact cedar-clad backyard unit with a large sliding glass door, concrete steps and a lemon tree in a sunny garden.

Before you fall in love

What matters most for residential adus

  1. 01Your city's ADU ordinance: size limits, setbacks, height and parking.
  2. 02Whether the home is intended for year-round residential occupancy.
  3. 03Utility connections to the main house — and who designs them.
  4. 04Crane or delivery access to a backyard.

On the desk: 3 homes

Concept listings shown for illustration.

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What are you looking to build? About 3 minutes · No payment, ever