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Planning a Home Addition in Los Gatos

A homeowner planning guide to defining an addition, studying the existing house, coordinating design decisions, and confirming which agency reviews the property.

Dining area with a deep blue accent wall, globe pendant lights, and a large window.

Define what the addition needs to solve

Begin with the household problem you want more space to address: a bedroom, a work area, a larger shared room, or a different connection to the yard. Write down who will use the new space, what must fit, and what should remain unchanged in the existing home. A clear brief helps your architect and builder compare a focused addition with other ways to reorganize the house.

Study the existing house and property

Before settling on a footprint, gather the available plans and identify what still needs to be measured or investigated. Discuss the structure, roof and exterior transitions, utilities, access, privacy, daylight, and how the new rooms will connect to existing circulation. A survey and qualified architectural or engineering review may be needed to answer site-specific questions; the required documents depend on the property and design.

Make design and scope decisions together

Compare options for room placement, circulation, storage, windows, and the relationship between the addition and the original house. Talk through priorities and tradeoffs with your design team before selecting finishes. Keep a written scope of what is included, what is undecided, and which questions need professional review so decisions can be made with the same information.

Verify which jurisdiction reviews the property

A Los Gatos mailing address does not by itself establish that a property is within the Town of Los Gatos. Confirm the parcel’s jurisdiction before relying on any municipal checklist or permit process. For properties under Town jurisdiction, the Town’s Building Pre-Application page explains how to begin an application for building permits that are not available for direct online application, including plan preparation, intake, plan review, and permit-issuance steps. The Town says application paths vary by permit type; contact the relevant agency to confirm what applies to your address and proposed work.

Explore a remodel or addition with Greenberg

Greenberg Construction offers residential remodeling and additions. If you are weighing an addition against changes to the existing layout, review the remodeling and additions service and bring your goals and property information to an initial conversation.