Accessory Dwelling Unit Designs: The Complete Guide to Every Style, Layout & Build Path
Explore every type of ADU design — from detached backyard cottages and garage conversions to prefab units and JADUs — with real cost data, space-planning
A 2 story ADU — a two-story accessory dwelling unit — is one of the most efficient housing solutions available to homeowners today. By growing vertically instead of horizontally, a two-story ADU maximizes livable square footage while preserving outdoor space, generates strong rental income, and can add significant value
The 800 sq ft ADU cost — meaning the total expense to design, permit, and build an 800 square foot accessory dwelling unit — typically falls between $160,000 and $400,000 in 2025, depending on your location, construction method, and finish
An accessory dwelling unit California is a self-contained secondary residence built on the same parcel as a primary home — and it has become one of the most powerful tools available to California homeowners for generating rental income, housing family members, or increasing property value. Because California’s housing shortage
Searching for an accessory dwelling unit near me is one of the smartest moves a homeowner or renter can make in today’s housing market — whether you want to generate rental income, house a family member, or simply add long-term value to your property. An accessory dwelling unit (ADU)
