Before ADU Legalization: What a Preapplication Inspection Can Tell You

Choose the question the inspection should answer

An owner often asks whether an undocumented unit is okay. That is too broad for a useful deliverable. Ask instead what conditions can be observed, what remains inaccessible, which further investigations are needed and what information would support a correction plan. Tie the scope to the legalization process being considered.

The current San José: Unpermitted ADU and JADU FAQ distinguishes the optional confidential third-party inspection from city approval. Read that distinction before hiring someone. The preparatory service can help you understand potential work and uncertainty; it should not be sold as a private substitute for the agency's required inspections.

Select an appropriate scope and professional

The San José: AB 2533 ADU and JADU Legalization describes the program's preparation steps. Ask the proposed inspector about their qualifications, the systems they will assess and the limits of the service. A general overview and a specialist investigation are different deliverables. If another professional will prepare plans, coordinate what observations and measurements they need.

Request a written scope identifying accessible areas, document review and report format. Ask whether the service includes photographs, a condition register and follow-up questions. Avoid assuming a low-priced walk-through includes a comprehensive assessment of concealed construction or a complete design for corrections.

Provide records without overstating them

Give the inspector existing plans, permit history, relevant photographs and known construction dates. Clearly label uncertain information. A seller's statement about when a room was built is a clue, not necessarily accepted date evidence for the program. Ask the team to identify what additional documentation would be useful.

Walk through your concerns and explain your intended use. A unit planned for continued residential use raises different practical questions from a structure intended for another scope. Do not hide a known defect to obtain a more reassuring report; the purpose is to discover the problem before it becomes a surprise in design or construction.

Convert the report into decisions

Organize findings into observed conditions, unresolved questions and proposed next steps. Ask which items need immediate attention from the appropriate professional, which need measurement or access, and which are questions for the city. Obtain a separate correction design or estimate where necessary rather than treating a checklist as a construction instruction.

Hypothetically, an inspector cannot verify a concealed connection. The useful result is a clearly stated limitation and recommended investigation, not an assumption that the connection passes or fails. That distinction helps you budget uncertainty and prevents the report from claiming more than the inspection could establish.

Keep city approval as a separate milestone

Use the findings to improve the application and as-built plans. Track how each relevant issue is addressed in proposed corrections and later inspection records. The city remains responsible for the approval steps described in its program, so do not market or rent a unit on the strength of a private report alone.

Your commissioning checklist should cover the applicable program, professional scope, qualifications, documents supplied, access limits, deliverables, correction planning and city questions. The best preapplication inspection gives you a more informed choice about proceeding. It does not remove every uncertainty or guarantee a particular legalization cost or outcome.

Questions to ask before commissioning the report

Ask what the inspection can establish without opening concealed construction and what conditions would require additional access. Request the format of the findings and whether the inspector will discuss them with the person preparing the as-built plans. Clarify whether cost estimates or correction designs are included, because identifying a condition is different from engineering or pricing its solution.

Prepare a list of known concerns without diagnosing them yourself. For each, identify the location, observation and any related record. This helps the professional scope the inspection without treating the owner's interpretation as a technical conclusion.

After delivery, ask for clarification of any broad phrase such as appears acceptable or further evaluation recommended. Which component was observed, what limitation remains and what next action resolves it? A useful report makes uncertainty specific. Keep its findings separate from the city's eventual decisions and from the contractor's construction price. Connecting those workstreams deliberately produces a better application and budget than asking one preparatory report to serve as inspection, approval, design and fixed-price estimate all at once.

Agree on how questions will be handled after the report is delivered. A short clarification meeting can help the owner distinguish an observed concern from a recommendation for further investigation. Confirm whether that meeting is included before commissioning the service, and avoid assuming the inspector will provide unlimited design advice as part of an inspection-only assignment.