ADU Knowledge Center

Learn enough to make the next ADU decision with confidence.

Use the guides and tools below to move from a general ADU idea to property-specific questions about size, cost, permits, utilities, design, financing, and construction.

Start with my property

A planning library, not generic blog filler.

ADU.zone connects educational content to models, city resources, cost tools, property qualification, and the next project action instead of publishing disconnected SEO articles.

Planning topics

Five places homeowners usually need clarity.

Property & permits

Start with the address, jurisdiction, site constraints, and the questions that must be verified before design.

Check my propertyCalifornia city guidesDesign & permitting

ADU models & layouts

Compare footprints, bedroom counts, detached models, attached planning, and garage conversions.

ADU model collection2 bedroom ADUsGarage conversions

Cost & budgeting

Build a preliminary range, understand major cost drivers, and separate model pricing from property-specific scope.

ADU cost calculatorConfigure an ADUFinancing options

Process & construction

Understand feasibility, design, engineering, permitting, construction, inspections, and handoff.

How the process worksADU servicesProject concepts

Building systems

Compare the framing and construction approach before selecting finishes or final engineering.

Why steel framingSteel-frame model conceptsDiscuss a custom project

Turn research into a property decision

The address is where generic ADU information becomes useful.

Check the property, identify the missing information, compare the closest model footprint, and then refine design and pricing.

Check my property