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Cupertino, California Whole-House Remodel & 764 SF Front Addition

A 764-square-foot front addition and whole-house remodel transform a 1963 ranch home into a 2,487-square-foot, four-bedroom, 3.5-bathroom all-electric residence with bird-safe glazing.

2,487 SF conditioned living area • 764 SF front addition • 444 SF attached garage • 4 bedrooms • 3.5 bathrooms

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Project Brief and Scope

Transforming a 1963 Ranch Into a Modern Cupertino, California Residence

This project transforms an aging 1,723-square-foot ranch into a 2,487-square-foot modern residence while staying within municipal residential lot-coverage constraints and bird-sensitive wildlife envelope standards. The scope combines a major front addition, open-plan interior reconfiguration, 400-amp electrical infrastructure, all-electric HVAC and comprehensive life-safety upgrades.

Project Scope

Add 764 square feet at the front of the home for a new primary suite, walk-in closet, private bathroom, high-ceiling foyer, additional bedroom and full guest bathroom.

Reconfigure the interior into an open living room, dining area, kitchen, pantry, laundry alcove, powder room and improved secondary bedrooms.

Upgrade the electrical service from 100 amps to 400 amps with capacity for Level 1 and Level 2 EV charging and future electrification.

Replace legacy gas heating and split air conditioning with an all-electric multi-zone smart heat pump and attic-mounted ducted distribution.

Add life-safety and envelope upgrades, including fire sprinklers, a 1-hour garage separation, efficient fixtures and ceramic-fritted bird-safe glazing.

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Site, Planning and Footprint Strategy

Planning a 2,487-Square-Foot Residence Within Cupertino, California Limits

The site plan coordinates a 764-square-foot front addition, a retained 444-square-foot garage, one-story massing and precise setbacks on a 7,419-square-foot lot. The resulting footprint remains within local coverage limits while creating a 2,487-square-foot conditioned home.

7,419 SF Lot

The low-density single-family parcel provides 7,419 square feet of site area for the one-story expansion.

7,419 SF Lot

The low-density single-family parcel provides 7,419 square feet of site area for the one-story expansion.

7,419 SF Lot

The low-density single-family parcel provides 7,419 square feet of site area for the one-story expansion.

2,487 SF Living Area

The home expands from 1,723 to 2,487 square feet through a 764-square-foot front addition.

2,487 SF Living Area

The home expands from 1,723 to 2,487 square feet through a 764-square-foot front addition.

2,487 SF Living Area

The home expands from 1,723 to 2,487 square feet through a 764-square-foot front addition.

444 SF Attached Garage

The existing 444-square-foot attached garage remains within its current footprint and receives a 1-hour fire-rated separation.

444 SF Attached Garage

The existing 444-square-foot attached garage remains within its current footprint and receives a 1-hour fire-rated separation.

444 SF Attached Garage

The existing 444-square-foot attached garage remains within its current footprint and receives a 1-hour fire-rated separation.

14′-3″ Ridge Height

The residence remains one story with a 14′-3″ ridge, a 14′-0″ entry plate and a typical 9′-2″ plate height.

14′-3″ Ridge Height

The residence remains one story with a 14′-3″ ridge, a 14′-0″ entry plate and a typical 9′-2″ plate height.

14′-3″ Ridge Height

The residence remains one story with a 14′-3″ ridge, a 14′-0″ entry plate and a typical 9′-2″ plate height.

44.8% Lot Coverage

The footprint reaches 44.8% without eaves and 45.5% with eaves, within the applicable municipal thresholds.

44.8% Lot Coverage

The footprint reaches 44.8% without eaves and 45.5% with eaves, within the applicable municipal thresholds.

44.8% Lot Coverage

The footprint reaches 44.8% without eaves and 45.5% with eaves, within the applicable municipal thresholds.

Setback Compliance

The plan provides a 21′-4″ front setback, a 31′-10″ rear setback and 5′-0″ and 11′-0″ side setbacks.

Setback Compliance

The plan provides a 21′-4″ front setback, a 31′-10″ rear setback and 5′-0″ and 11′-0″ side setbacks.

Setback Compliance

The plan provides a 21′-4″ front setback, a 31′-10″ rear setback and 5′-0″ and 11′-0″ side setbacks.

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Design and Performance Highlights

Modern Comfort, Electrification and Bird-Safe Design in Cupertino, California

The design combines expanded living space with accessible detailing, high-performance building systems, all-electric capacity and a carefully engineered envelope.

Open Great Room & Foyer

A 14-foot entry foyer transitions into an open vaulted kitchen, dining area and family gathering room.

Curbless Primary Suite

The primary bathroom uses a zero-threshold shower, waterproofed sub-assemblies and linear drainage for barrier-free access.

Bird-Safe Envelope

Front and rear elevations use permanent 2-inch-by-2-inch ceramic-fritted glazing patterns to reduce bird collisions.

400A All-Electric Capacity

The 400-amp service supports Level 2 EV charging and reserves dedicated capacity for a future heat pump water heater.

Class A Roof Assembly

The roof combines Class A cool-roof shingles, low-profile venting, aluminum eaves, vaulted-ceiling details and seismic collector strapping.

Multi-Zone Heat Pump

The HVAC design pairs a variable-speed heat pump with attic ducting, MERV 13 filtration and low-decibel condenser placement.

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Construction Journey and Milestones

From Site Preparation to Final Municipal Clearance in Cupertino, California

The construction sequence moves from selective demolition and protected site preparation through foundation tie-ins, structural framing, high-performance enclosure work, all-electric systems and final municipal inspections.

01

Site Preparation, Demolition & Tree Protection

Crews install protective perimeter fencing around mature trees, selectively remove front exterior walls and safely decommission obsolete heating appliances and piping.

02

Foundation Expansion & Retrofit

03

Floor Framing & Curbless Shower Prep

04

Structural Framing, Shear Walls & Ridge Beams

05

Envelope, Glazing & MEP Rough-Ins

06

Finishes, Commissioning & Closeout

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