A technician's tool bag and inspection clipboards resting on a redwood deck beside an outdoor mini-split heat pump unit outside a modern dark gray ADU cottage surrounded by garden landscaping

ADU Maintenance & Repair Guide

ADU maintenance is the ongoing care of an accessory dwelling unit’s structure, systems, and finishes to

Utility Hookup & Separate Metering for ADUs

Separate Metering & Utility Hookup Options for ADUs

Utility hookups make or break an ADU budget, and separate metering is the decision that shapes

A rolled set of architectural blueprints tied with twine and an extended metal tape measure resting on an outdoor table in front of a modern timber-clad backyard ADU at sunset

How Much Does an ADU Cost? Complete Breakdown & Budget Guide

An ADU in California typically costs $150,000 to $400,000 to build, depending on size, type, and

A contemporary wood-clad backyard ADU with floor-to-ceiling glass windows and clerestory lighting, situated next to a permeable grid paver driveway, drought-tolerant succulent landscaping, and a manicured green lawn at golden hour

ADU Parking Requirement & Site Layout Guide

Parking is the single most misunderstood part of ADU planning, and it stops more projects at

A modern prefab backyard ADU featuring vertical natural cedar wood siding, matte charcoal standing seam metal cladding, corner picture windows, and a landscaped patio with outdoor seating

ADU Siding & Cladding Options Guide

Fiber cement siding lasts 30 to 50 years and resists fire, rot, and pests better than

An open-concept ADU interior featuring a modern walnut kitchen with a waterfall quartz island, adjacent living room with neutral boucle seating, and a vaulted ceiling with an exposed wood beam

ADU Interior Finishes & Design Guide

The finishes inside an accessory dwelling unit determine whether it feels like a cramped afterthought or

Under-stair storage drawers and built-in bookshelf in a modern compact ADU interior

ADU Storage Solutions & Space-Saving Ideas

An ADU with smart storage feels twice its actual size. The difference between a cramped accessory

A modern Scandinavian-style kitchen with natural oak flat-panel cabinetry, white quartz countertops, stainless steel appliances, and fresh rosemary with a bowl of lemons on an island cutting board beside a sunny window

ADU Kitchen Design & Layout Guide

A well-designed ADU kitchen fits real cooking habits into 100 to 300 square feet without feeling

Spray foam insulation applied to timber stud walls with mini-split heat pump for ADU climate control

ADU Insulation & Climate Control Guide

Good insulation is the difference between an ADU that costs $40 a month to heat and

A timber house frame with roof trusses under construction on a concrete slab foundation during sunset in a residential backyard

ADU Framing & Structural Methods Explained

Wood framing remains the most common structural method for California ADUs, but steel and panelized systems