5450 State Highway 128

Private Napa Foothill Retreat with Energy Independence and Net-Zero Electricity Costs! With a new roof in 2026, full exterior repaint, and a proven history of near net-zero electric costs, this private 20-acre Napa foothill property offers an uncommon combination of beauty, resilience, and long-term efficiency. The single-story Craftsman residence features 3 bedrooms, 2 bathrooms, and approximately 1,913 square feet of thoughtfully designed living space. Hardwood floors, Vermont soapstone counters, maple cabinetry, and a Rumford fireplace create a warm, comfortable interior, while French doors in the kitchen and primary suite open to quiet foothill views. Designed for dependable day-to-day living, the home includes a 28-panel solar array paired with Tesla's latest Powerwall 3 batteries Tesla Powerwall energy storage batteries, EV charging capability, and a 14-kW whole-house backup generator. Since 2022, solar production has offset annual electricity usage, including EV charging, while supporting reliable backup power during outages. The system also benefits from transferable NEM 2.0 status, allowing a future owner to continue receiving favorable utility credits. Water is supplied by a shared spring with 5,000 gallons of on-site storage and whole-house filtration. Dual-zone HVAC enhances year-round comfort. Approximately 13 of the 20 acres are fenced, offering controlled, usable land without the need for additional infrastructure. A detached workshop and two separately fenced enclosures adjacent to the home offer practical utility for pets, gardening, or other pursuits. A rare blend of Napa foothill privacy, practical infrastructure, and materially reduced operating costswell suited for full-time living or as a refined second-home retreat.

Days on Market

4 days

Current Status

Active

Original Price

$1,290,000

List Price

$1,295,000

On Market Date

Apr 12, 2026

Property Type

Single Family Residence

Area

Berryessa

Zip Code

94558

MLS ID

326024845

APN

032-150-037-000

Year Built

2005

Stories in Building

Unavailable

Possession

Negotiable, Seller Rent Back

Data Source

BAREIS

Origin MLS System

Bed

3

Bath

2

Shower Stall(s), Soaking Tub, Tile, Window

Parking

10

Covered, EV Charging, No Garage, RV Access

SQ FT

1,913

SQ FT Source

Assessor Auto-Fill

Lot SQ FT

871,636.0

Lot Acres

20.01 Acres

Kitchen

Island, Stone Counter

Cooling

Ceiling Fan(s), Central

Dining Room

Formal Area

Living Room

View

Flooring

Carpet, Tile, Wood

Foundation

Concrete Perimeter

Fire Place

Living Room, Stone, Wood Burning, See Remarks

Heating

Central, Fireplace(s)

Laundry

Cabinets, Dryer Included, Ground Floor, Inside Area, Sink, Space For Frzr/Refr, Washer Included

Main Level

Bedroom(s), Dining Room, Full Bath(s), Kitchen, Living Room, Primary Bedroom, Street Entrance

Views

Hills, Panoramic, Pasture

Possession

Negotiable, Seller Rent Back

Basement

None

Architectural Style

Craftsman

* Fee

$0

Name

Maple Spring Water District

Phone

(707) 000-0000

*Fee includes

Other

MLS and other Information regarding properties for sale as shown in Theo have been obtained from various sources such as sellers, public records, agents and other third parties. This information may relate to the condition of the property, permitted or unpermitted uses, zoning, square footage, lot size/acreage or other matters affecting value or desirability. Unless otherwise indicated in writing, neither brokers, agents nor Theo have verified, or will verify, such information. If any such information is important to buyer in determining whether to buy, the price to pay or intended use of the property, buyer is urged to conduct their own investigation with qualified professionals, satisfy themselves with respect to that information, and to rely solely on the results of that investigation.

School data provided by GreatSchools. School service boundaries are intended to be used as reference only. To verify enrollment eligibility for a property, contact the school directly.