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Single family home for sale at 519 Proton Pl, San Marcos, CA 92078 | MLS# NDP2609182 | Listing updated on 2026-10-07
Photo 1 of Single family home for sale at 519 Proton Pl, San Marcos, CA 92078 | MLS# NDP2609182 | Listing updated on 2026-10-07
Photo 2 of Single family home for sale at 519 Proton Pl, San Marcos, CA 92078 | MLS# NDP2609182 | Listing updated on 2026-10-07
Photo 3 of Single family home for sale at 519 Proton Pl, San Marcos, CA 92078 | MLS# NDP2609182 | Listing updated on 2026-10-07
Photo 4 of Single family home for sale at 519 Proton Pl, San Marcos, CA 92078 | MLS# NDP2609182 | Listing updated on 2026-10-07
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Listed by: Gino Tinucci (619) 665-6701 DRE #01516006, Curtis Knopp DRE #01440496 | Knopp Coastal Realty (760) 263-4321

$1,399,000

Monthly Est:$6,963

  • Beds Icon4 Beds
  • Beds Icon
    4 Baths
  • Beds Icon2,429sqft

519 Proton Pl, San Marcos, CA 92078

$6,963/moEst:

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  • Single Family Residence

  • Built in 2025

  • $268/mo HOA

  • -- sqft lot

  • $576/sq.ft

Description

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.

  • Houzeo last checked: 0 minutes ago
  • Listing updated: October 7, 2026 at 7:53 pm
  • Source: California Regional MLS-CA | MLS#: NDP2609182 California Regional MLS-CA

Property Details

  • Status

    Active

  • Type

    Single Family Residence

  • No. of Stories

    3

  • County

    San Diego County

  • City

    San Marcos

  • Neighborhood

    --

  • Year Built

    2025

  • HOA Fees

    $268/mo

  • Finished Area

    2,429 sqft

  • Lot Size

    -- sqft lot

  • Basement Area

    - sqft

  • MLS Name

    California Regional MLS

  • MLS Number

    NDP2609182

  • MLS Status

    Active

  • Days on Market

    6

  • Cumulative Days on Market

    6

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Location

HOA Management

First Service

HOA Fees

$268/ Monthly

Amenities

Amenities and services may be covered by one or multiple associations and service providers.

Lawn Care Lawn Care

Park Playground Park Playground

Club House Club House

Bike Trails Bike Trails

Pool Pool

Sports Court Sports Court

CallForRules CallForRules

Barbecue Barbecue

OutdoorCookingArea OutdoorCookingArea

PetRestrictions PetRestrictions

Management Management

Disclaimer: Amenities are based on third-party information and may vary; buyers must independently verify all amenities, as information is deemed reliable but not guaranteed.

Facts & Features

Rooms

  • Bedrooms & bathrooms

    Bedrooms: 4

    Bathrooms: 4

Interior

  • Interior Features

    Bedroom On Main Level, Entrance Foyer, Primary Suite, Utility Room, Walk In Closets

  • Cooling

    Central Air, Electric

Utilities & Energy

  • Pool Features

    Community, Fenced, In Ground, See Remarks, Association

  • Fireplace Features

    None

  • Association Amenities

    Call For Rules, Clubhouse, Management, Maintenance Front Yard, Outdoor Cooking Area, Barbecue, Playground, Pickleball, Park, Pool, Pet Restrictions, Trails

  • Laundry Features

    Inside, In Garage, Laundry Room, See Remarks, Stacked, Upper Level

  • Parking Features

    Covered, Door Multi, Direct Access, Driveway, Garage Faces Front, Garage, Garage Door Opener, Private, Side By Side

Other Features

  • Lot Features

    Zero To One Unit Acre

  • Community Features

    Biking, Curbs, Dog Park, Hiking, Park, Storm Drains, Street Lights, Suburban, Sidewalks, Pool

Price History

DateEventPrice

09/30/2026

Source: mls_logoCalifornia Regional MLS-CA #NDP2609182

Listed for Sale

$1,399,000

$576/sqft

Getting Around 519 Proton Pl

Bike Score®

Bike Score

Somewhat Bikeable

29/100

Walk Score®

Walk Score

Car-Dependent

18/100

Data provided by Redfin

Nearby Homes

Based on information from California Regional Multiple Listing Service, Inc. as of Oct 09, 2026, 01:00AM and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Information being provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. This website may not include listings or property addresses of sellers who have directed their listing brokers to withhold their listing or their property address from display on the Internet. © 2026 California Regional Multiple Listing Service. All Rights Reserved.

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