Attached ADUs in Saratoga

An attached ADU is a new dwelling built onto the existing house, sharing at least one wall. On Saratoga properties, where there is usually room for a detached unit, homeowners are sometimes surprised that we recommend attached anyway. The reasons are specific and they come up often.

Protected trees are the first. A parcel can be large and still have no good building envelope in the rear yard once mature oaks and their root zones are mapped. The second is utility distance, since a detached unit at the back of a deep lot needs a long trench for water, sewer, and electrical while an attached unit ties in at the wall. The third is simply who the unit is for. Families building for a parent frequently want them close to the house, not a hundred feet across the yard in the dark.

The shared wall is both the advantage and the thing that has to be detailed correctly. On every attached unit we build, the same items decide whether it functions as an independent residence or feels like a converted wing.

• Fire separation between the unit and the primary residence, required by code
• Sound assemblies in the shared wall, which is what actually makes independent living work day to day
• A separate exterior entrance that does not route anyone through your living space
• Independent heating and cooling so the unit is not tied to your thermostat
• Electrical capacity for a second dwelling, usually meaning a panel upgrade
• A roofline, eave detail, and exterior that reads as part of the original house

On Saratoga homes that last point carries real weight. These are substantial houses, and an addition that ignores the proportions and materials of the original is visible from the street immediately. Matching it properly is most of the design effort, and it is what protects the value of the property rather than diminishing it.

State ADU law requires ministerial review, so a compliant attached unit is approved without a discretionary hearing. The process runs through the City of Saratoga Community Development Department, which handles its own submittals, plan check, and inspections. Tree protection applies, and even an attached unit can be affected if the addition extends toward a protected specimen.

We manage the drawings, the submittal, the corrections, and the inspection sequence as a continuous scope.

Whether attached is the right answer depends on your trees, your setbacks, and how the house sits on the parcel. Get in touch with our team and we will walk it with you.