---
listing_id: CRNDP2609182
status: Active
price: 1399000
beds: 4
baths_full: 3
baths_half: 1
sqft_living: 2429
sqft_lot: 0
lot_acres: 
year_built: 2025
property_type: Residential
property_subtype: Single Family Residence
address: "519 Proton Pl"
city: San Marcos
state: CA
zip: 92078
county: "San Diego County"
lat: 33.1332042
lng: -117.167539
days_on_market: 6
hoa_fee: 268
hoa_frequency: Monthly
garage_spaces: 2
list_agent: "Gino Tinucci"
list_office: "Knopp Coastal Realty"
list_agent_phone: "(619) 665-6701"
list_agent_license: 01516006
mls_source: CRMLS
modified: 2026-10-07
transaction_type: buy
---

Home | San Diego County | San Marcos | 92078 | 519 Proton Pl

519 Proton Pl, San Marcos, CA 92078

MLS: CRNDP2609182 | Status: Active | Price: $1,399,000
Beds/Baths: 4 / 3 /1
Property Type: Residential

Quick Facts

Beds Baths Sq Ft Sq Ft Lot Yr Built
4 3 /1 2,429 0 2025

Upcoming Open Houses

Date Time Hosted By
Saturday, October 10 11:00 am - 1:00 pm

Remarks

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 paver

MLS Listing Information

Field Value
MLS # CRNDP2609182
MLS Source California Regional MLS
Days on Site 6

Features

Interior Features

Feature Details
Bedrooms Ground Floor Bedroom, Primary Suite/Retreat, Other
Appliances Other
Family Room Other
Fireplace None
Laundry In Garage, In Laundry Room, Other, Stacked Only, Upper Floor
Cooling Central Forced Air, Central Forced Air - Electric

Exterior Features

Feature Details
Pool Community Facility, Fenced, In Ground, Other

Parking, School, and Other Information

Feature Details
Garage/Parking Attached Garage, Covered Parking, Garage, Gate/Door Opener, Other, Private / Exclusive, Side By Side, Garage: 2 Car(s)
Elementary District San Marcos Unified
High School District San Marcos Unified
HOA Fee $268
HOA Fee Frequency Monthly
Complex Amenities Barbecue Area, Club House, Community Pool, Other, Park, Playground
Zoning R1

Contact Information

Listing Agent Co-Listing Agent
Gino Tinucci Curtis Knopp
Knopp Coastal Realty Knopp Coastal Realty
License #: 01516006 License #: 01440496
Phone: (619) 665-6701 Phone: (760) 263-4735

School Ratings

School data provided by GreatSchools.org

Nearby Schools

School Type Grades Distance Rating
San Marcos Elementary School public K-5 0.57 mi 2
North Coastal Consortium Schools public K-12 0.65 mi N/A
San Marcos Middle School public 6-8 1.03 mi 5
Discovery Elementary School public K-5 1.37 mi 10
Mission Hills High School public 9-12 1.69 mi 7
Double Peak K-8 public K-8 1.85 mi 8
Paloma Elementary School public K-5 2.11 mi 10
La Mirada Academy public K-8 2.17 mi 2
San Marcos High School public 9-12 2.19 mi 8
Richland Elementary public K-5 2.20 mi 7
Woodland Park Middle School public 6-8 2.41 mi 5
Knob Hill Elementary School public K-5 2.73 mi 8
San Elijo Elementary School public K-5 2.77 mi 8
San Elijo Middle School public 6-8 2.93 mi 7
Joli Ann Leichtag Elementary School public K-5 3.01 mi 5
Twin Oaks Elementary School public K-5 3.16 mi 8
San Marcos Adult public UG 3.17 mi N/A
Twin Oaks High School public 9-12 3.30 mi 2
Foothills High School public 9-12 3.30 mi 3
Rock Springs Elementary School public K-5 3.54 mi 4

Nearby Homes

Address Price Beds Baths Sq Ft Status
1092 Serena Way $1,500,000 4 2/1 2,256 Active
912 Lantana $1,349,999 4 3 3,043 Active
930 Rose Arbor Dr $1,200,000 3 2/1 2,319 Active
1578 Chert Dr. $1,200,000 5 3 2,022 Active

Disclosures

©2026 California Regional MLS. All rights reserved. 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 provided is for personal, non-commercial use by the viewer and may not be redistributed without explicit authorization from California Regional MLS.

Presently MLSListings.com displays Active, Contingent, Pending, and Recently Sold listings. Recently Sold listings are properties which were sold within the last three years. After that period listings are no longer displayed in MLSListings.com. Pending listings are properties under contract and no longer available for sale. Contingent listings are properties where there is an accepted offer, and seller may be seeking back-up offers. Active listings are available for sale.

This listing information is up-to-date as of October 07, 2026. For the most current information, please contact Gino Tinucci, (619) 665-6701.