01
Compare the building to its permit history
A designer or engineer may need to document the structure and identify work needed for current use. Opening walls can reveal framing, wiring, plumbing, moisture, or foundation conditions.
Lay available plans beside field measurements and photographs. Note additions, enclosed openings, plumbing, wiring, and roof changes that do not match the documents.
02
Open only what the investigation requires
The City determines the permit path. Some work may be retained, corrected, or removed depending on the records and current requirements.
A targeted opening can answer a structural or moisture question before the construction contract carries a large unknown. Agree on who repairs the opening afterward.
03
Separate correction work from the new ADU
Ask proposals to separate investigation, design, demolition, corrections, new ADU work, and restoration. That makes the risk visible.
Demolition and code corrections serve a different purpose from the new kitchen, bath, or finish work. Separate those costs so the owner can see where the money goes.
04
Expect the City to decide what may remain
Long use does not create approval by itself. Anaheim reviewers determine the path after they see the records and proposed work; the contractor prices the construction that follows.
City and state references
Where to verify the public requirements
Save the current agency page with the project record when it affects a drawing or proposal assumption.
Continue from here
Use the next guide for the open question
Bring us the property
Talk with us before the estimate
Give us the address and the decision you are trying to make. We will tell you what information would help next.