A converted garage, a room behind the house, an addition a previous owner never permitted. In Saratoga, legalizing work like that is an ordinary building permit for what is already there, with a penalty on top and a city investigation first. Here is how it works in Saratoga, what it costs, and where the city's own ADU rules still lag behind state law.
- Saratoga's fee schedule sets the penalty for building without a permit at 2x the permit fee.
- The city makes a special investigation before it will issue a permit for work already built.
- A building permit cannot fix a zoning problem, so zoning clearance comes first.
- For an ADU built before January 1, 2020, state law applies even though the city's own ADU code is older.
What Saratoga charges
The city's adopted fee schedule lists "Building Without a Permit" with a penalty of 2x the permit fee. It does not say exactly which fees that applies to, so ask the Building Division before you budget. The city's building code also requires a special investigation before a permit is issued for work started without one, with an investigation fee "whether a permit is then or subsequently issued" (SMC 16-15.030).
Zoning comes before the building permit
Saratoga issues a building permit only after zoning clearance (SMC 16-05.020). That matters most for garage conversions: the zoning code requires covered garage parking for a single-family house unless the space becomes a lawful ADU or junior ADU. Check zoning first, then draw.
ADUs built before 2020
State law (Government Code 66311.7) says a city may not deny a permit to legalize an ADU or junior ADU built before January 1, 2020, unless the unit fails the state health and safety standard. Saratoga's own ADU ordinance has not caught up. In a December 5, 2025 letter, the state housing department told the city its ADU ordinance may be outdated and out of compliance, and that an ordinance out of compliance is void, so state standards apply. The City Council took up permit process changes on April 1, 2026. Until the city adopts its own program, cite the state law directly. See our guide to California's ADU amnesty.
What it usually takes
Expect as-built drawings, the city's investigation, and inspections that may need walls or ceilings opened to see framing, wiring and plumbing. Saratoga does not publish a fixed rule for how much has to be opened, so we agree that scope with the inspector before the work starts. The correction work is usually the biggest cost, more than the penalty.
How we handle it
We have worked in Saratoga, and we start the same way every time: pull the permit history, confirm zoning, look at the work in person, then give you the path and a written price. For other nearby cities, see the penalty rules by city.
Sources
- City of Saratoga: Adopted Fee Schedule (effective July 1, 2026)
- Saratoga Municipal Code 16-15.030 (investigation fee for work without a permit)
- Saratoga Municipal Code 16-05.020 (permits and zoning clearance)
- California HCD: Saratoga ADU technical assistance letter (December 5, 2025)
- City of Saratoga: City Council staff report on permit process improvements (April 1, 2026)
- California Government Code Section 66311.7 (unpermitted ADUs built before 2020)