519 Proton Place
San Marcos, CA, 92078 $ 1,399,000
Bedrooms4 Baths3.1 Sq 2,429 Monthly Estimate*
$ 9,663
for $1,399,000 with 4 bedrooms and 3 full baths, 1 half bath. This 2,429 square foot home was built in 2025.
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
See more
FeaturesGeneralCooling Central Forced Air Electric
Zoning R1
HOA Fee 268.0
Garage Spaces 2.0
Association Fee Includes Exterior (Landscaping)
Pool Features Association Below Ground Community/Common Fenced See Remarks
Year Built 2025
View City Lights Mountains/Hills Neighborhood
Stories Count 3
Levels 2 Story
Property Subtype Detached
Assoc Fee Paid Per Monthly
County San Diego
New Construction N
Property Type Residential
Association Amenities Barbecue Biking Trails Call for Rules Hiking Trails Outdoor Cooking Area Pet Rules Playground Pool
HOA N
Attached Garage N
Full Baths 3
Status PENDING
Directions Use GPS. Follow signs past Shea's model homes in the back of the community to find Proton Street.
City San Marcos
Senior Community Y/N N
High School District San Marcos Unified School Distri
Lot Size Units Acres
Lot Size Square Feet 0.0
Property Attached Y/N N
Virtual Tour https://player.vimeo.com/video/1232561869?byline=0&title=0&owner=0&name=0&logos=0&profile=0&profilepicture=0&vimeologo=0&portrait=0
Building Area Units Sqft
Living Area Units Sqft
Standard Status Pending
Middle/Junior School District San Marcos Unified School Distri
Elementary School District San Marcos Unified School Distri
Year Built Source Builder
Freehold IDX
See more
ExteriorParking Features Direct Garage Access Garage Garage - Two Door Garage Door Opener
Total Parking 4.0
Lot Size Area 0.0
Building Area Total 2429.0
Waterfront Y/N N
See more
InteriorFireplace Features N/K
Total Stories 3
Common Walls No Common Walls
Air Conditioning Y/N N
Heating Y/N N
Fireplace Y/N N
Half Baths 1
Total Bedrooms 4
Entry Level 1
Total Baths 4
See more
* Excluded FeaturesList ByGino TinucciListing Agent
Knopp Coastal RealtyBroker
Affordability Calculator
- Monthly Principal & Interest
- $9,663
- Monthly Property Taxes
- --
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 7.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save NearbySingle family listings in San Marcos, CA
Average List Price $983,114
Percent of Sale Price 30%
About San Marcos, CA 95,390 Population
65% Since 2002
$ 67,514 Median Income
35.39 Median Age
37% Households with Children
Trends Information provided by ATTOM Data Solutions.
5192072 Elementary School
5192090 Middle School
Unknown High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 10/2/2026 | $1,399,000 | | Listed Price |