519 Proton Place, San Marcos, CA

$1,399,000

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4

Beds

4

Baths

2,429

Square feet

About 519 Proton Place

BRAND-NEW LUXURY HOME WITH CITY VIEWS, MULTIGENERATIONAL LIVING & SUSTAINABLE DESIGN! Welcome to The Hill District in San Marcos, where innovative design, modern amenities, and a commitment to sustainability come together to create an exceptional modern lifestyle. This never-lived-in, 4-bedroom, 3.5-bathroom, three-story home offers 2,429 square feet of thoughtfully designed living space with luxury finishes throughoutand no carpet! This energy-conscious home features owned solar panels, wall batteries, an EV charger, and a Halo-5 whole-home water filtration system. Additional highlights include luxury vinyl flooring, designer window coverings, city and mountain views, an outdoor kitchen, and one of the largest yards in the neighborhood. FIRST FLOOR: Designed with flexibility in mind, the private bedroom and full bathroom can function as a guest suite, home office, gym, in-law suite, or multigenerational living space. The area can be closed off from the main residence and offers the potential for an attached junior ADU-style setup. It includes direct garage access, a washer/dryer, sink, and private access to the backyard and full outdoor kitchen. The outdoor kitchen features a built-in BBQ, 2-burner cooktop, mini refrigerator, and microwave. A spacious patio with luxury pavers and low-maintenance landscaping creates a sunny and inviting outdoor retreat. SECOND FLOOR: The heart of the home features a spacious open-concept great room with a beautifully appointed luxury kitchen and an impressive 23-foot-wide covered patio. The kitchen showcases white shaker cabinetry, white qu

Open House

Sun, Oct 4th, 2026 @ 1pm - 3pm

Features of 519 Proton Place

MLS® # NDP2609182
Price $1,399,000
Bedrooms 4
Bathrooms 4.00
Full Baths 3
Half Baths 1
Square Footage 2,429
Year Built 2025
Type Residential
Sub-Type Detached
Status Active

Community Information

Address 519 Proton Place
Area SAN MARCOS (92078)
Subdivision Hill District
City San Marcos
County San Diego
State CA
Zip Code 92078

Amenities

Parking Spaces 4
Parking Direct Garage Access,Garage,Garage - Two Door,Garage Door Opener
# of Garages 2
View Mountains/Hills,Neighborhood,City Lights
Is Waterfront No
Has Pool Yes
Pool Below Ground,Community/Common,See Remarks,Association,Fenced

Interior

Cooling Central Forced Air,Electric
Fireplace No
Fireplaces N/K
# of Stories 3
Stories 2 Story

Exterior

Lot Description Curbs,Sidewalks

School Information

District San Marcos Unified School Distri

Additional Information

Date Listed October 1st, 2026
Days on Market 36
Zoning R1
Foreclosure No
Short Sale No
RE / Bank Owned No

Listing Details

OfficeKnopp Coastal Realty

Listing Map

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