$1,399,000For sale
519 Proton Place
San Marcos, CA 92078 · MLS# NDP2609182
Listing courtesy of Knopp Coastal Realty- 4Beds
- 4Baths
- 2,429Sq Ft
- 2025Year Built
About This Home
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 throughout—and 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 quartz countertops, stainless-steel appliances, an electric induction cooktop, smart refrigerator, reach-in pantry, and a large island with stainless-steel sink and seating for up to four. THIRD FLOOR: Three additional bedrooms, two full bathrooms, and a dedicated laundry room provide plenty of space and privacy. The spacious primary suite features a private balcony, two walk-in closets, a luxurious freestanding soaking tub, and a walk-in shower. The formal laundry room includes a brand-new washer and dryer set. And yes—there are two laundry areas, one serving each living space. The attached garage includes a covered driveway, providing the ability to accommodate two additional vehicles in front of the home. Outside, enjoy one of the neighborhood's largest yards, complemented by views of San Marcos city lights and surrounding mountains. The Hill District in North City is a thoughtfully planned community featuring innovative architecture, modern amenities, and sustainability-focused design. Planned and developing amenities include a luxury community center, pool, sports courts, and future parks. Conveniently located with immediate freeway access and close to restaurants, shopping, and everyday conveniences. Enjoy approximately 15 minutes to North San Diego County beaches, 30 miles to downtown San Diego, and 60 miles to Orange County. Brand-new construction, flexible living spaces, exceptional outdoor amenities, and modern sustainability features—this is the opportunity to experience a new standard of living in San Marcos.
Continue readingShow less
Want to see this home in person?
Request a private tour, ask a quick question, or call now before another buyer gets serious about 519 Proton Place.
Property at a Glance: 519 Proton Place
This single family residence property at 519 Proton Place, San Marcos, CA 92078 is for sale at $1,399,000. The home has 4 bedrooms, 4 bathrooms and 2,429 square feet of living space. It was built in 2025. That comes to about $576 per square foot. Reach out to set up a showing or ask for more details about this home.
Snapshot
- Status
- For sale
- Price
- $1,399,000
- Bedrooms
- 4
- Bathrooms
- 4
- Full Baths
- 3
- Half Baths
- 1
- Property Type
- Single Family Residence
- Year Built
- 2025
- Square Feet
- 2,429
- Days on Market
- 15
- MLS #
- NDP2609182
- Price per Sq Ft
- $576
- County
- San Diego
Nearby Schools
- Elementary SchoolSan Marcos
- Middle SchoolSan Marcos
- High SchoolMission Hills
Need a quick answer before the details?
Call now about 519 Proton Place and ask about showings, availability, or offer timing.
Property Details
Building
Land
Money
Rooms
Structures
Living in San Marcos, CA
519 Proton Place is in San Marcos, CA, in San Diego County. It is served by San Marcos, San Marcos and Mission Hills. Ask Brad & Karen Mattonen about other homes for sale in San Marcos and what nearby homes have sold for.
Location
519 Proton Place, San Marcos, CA 92078 Open in Google Maps
Mortgage Calculator
Principal and interest only. Taxes, insurance and HOA dues are extra.
Brad & Karen Mattonen Can Answer Your Questions About This Home
Why Work With Brad & Karen Mattonen?
Buying a home in San Marcos, CA goes better with a local agent on your side. Brad & Karen Mattonen can set up private showings, pull the latest numbers for the area, and guide you through the offer and the closing. Call 858-518-2875 to get started. Whether 519 Proton Place is the one or you would like to see other homes nearby, reach out any time.
Local facts
Facts and context beyond the MLS description
What the numbers say about 519 Proton Place and the San Marcos area around it.
Current market context
How this home compares in San Marcos
- $576This home per sq ft
- $523Median per sq ft
- 58Homes for sale like it
- 1Average days on market
At $576 per square foot, 519 Proton Place is priced about 10% above the $523 median for 4 bedroom homes for sale in San Marcos now.
Nearby sold homes
Recent sold homes near this property
Homes that sold within 1.25 miles of 519 Proton Place in the last 6 months, at a median price of $963,000.
| Address | Sold | Home | Sold price | Distance |
|---|---|---|---|---|
| 647 Fahrenheit Drive | May 8, 2026 | 3 bd · 4 ba · 1,504 sqft | $835,000 | 0.2 mi |
| 477 Village Greens | Aug 12, 2026 | 4 bd · 3 ba · 1,931 sqft | $1,000,000 | 0.3 mi |
| 492 Clubhouse | Oct 11, 2026 | 3 bd · 3 ba · 1,931 sqft | $1,050,000 | 0.3 mi |
| 587 Gateway Lane | Sep 24, 2026 | 5 bd · 5 ba · 3,453 sqft | $1,655,000 | 0.4 mi |
| 524 Avenida Ortega | Jul 31, 2026 | 4 bd · 3 ba · 2,397 sqft | $1,235,000 | 0.4 mi |
| 630 Sonoma Street | Aug 28, 2026 | 4 bd · 3 ba · 2,052 sqft | $926,000 | 0.5 mi |
| 428 San Marcos 162 | Apr 27, 2026 | 2 bd · 3 ba · 1,187 sqft | $579,000 | 0.6 mi |
| 215 Westlake Drive 2 | Aug 26, 2026 | 2 bd · 3 ba · 931 sqft | $499,000 | 0.6 mi |
Every home is different. Ask for a full price review before you make an offer.
Listing timeline
Price and status history
| Date | Event | Price |
|---|---|---|
| Oct 16, 2026 | Active | $1,399,000 |
Similar Homes Nearby
Homes for sale in San Marcos close to this home's price.
For sale$1,697,5005 bd5 ba3,717 sq ft955 Wild Iris CourtSan Marcos, CA 92078Listing courtesy of First Team Real Estate
For sale$1,349,9994 bd3 ba3,043 sq ft912 LantanaSan Marcos, CA 92069San Marcos subdivisionListing courtesy of Exp Realty of Greater LA, Inc
For sale$1,800,0004 bd3 ba2,023 sq ft3350 Descanso Ave.San Marcos, CA 92078San Marcos subdivisionListing courtesy of On Point Homes and Properties
For sale$1,395,9994 bd3 ba2,721 sq ft1160 Festival RoadSan Marcos, CA 92078Listing courtesy of HomeSmart Realty West
For sale$1,595,0005 bd5 ba3,480 sq ft1241 White Sands Dr.San Marcos, CA 92078San Marcos subdivisionListing courtesy of Compass
Coming soon$1,395,0003 bd3 ba2,041 sq ft1048 La Sombra DriveSan Marcos, CA 92078Listing courtesy of eXp Realty of California, Inc
Want to see this home?
Interested in 519 Proton Place?
Get in touch with Brad & Karen Mattonen to learn more about this property or schedule a private showing.
Or call 858-518-2875