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Mary Rosenthal, DRE#00964075, REALTOR®
(805) 459-8971

678 Gemstone Dr, San Marcos, CA 92078

$1,125,000
  • 678 Gemstone Dr, San Marcos, CA 92078 Main Photo

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New to the Market Active
BEDS4 BATHS3 full SQUARE FEET2,550 MLS#NDP2606743
STATUSActive PROPERTY TYPEResidential - Single Family SCHOOLSan Marcos Unified

Listing Courtesy of: Coldwell Banker Realty
Agency Phone: 760-941-6888
Associate Name: John Castillo
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Listing Shown by: Farrell Smyth, Inc.
Associate Name: Mary Rosenthal, DRE#00964075, REALTOR®


Property Description

Welcome to this beautifully upgraded, north facing home in the gated Rancho Tesoro community of San Marcos. Located in the desirable Vientos/Terracina neighborhood, this spacious 4-bedroom, 3-bath home offers approximately 2,550 square feet of comfortable and thoughtfully designed living space. Inside, the open concept layout feels bright, welcoming, and private. The main living area flows into a modern kitchen with a large quartz island, white shaker cabinets, a custom tile backsplash, and stainless steel appliances that are included with the home. A full bedroom and bathroom on the first floor provide a convenient option for guests, extended family, or a home office. Upstairs, the spacious loft offers even more flexibility and could easily be used as a playroom, office, media room, or converted into a fifth bedroom. The primary suite is a relaxing retreat with a spa like bathroom featuring a frameless glass shower, soaking tub, dual vanities, and a large walk-in closet. Two additional bedrooms, a laundry room, and plenty of storage complete the second floor. The fully fenced backyard is designed for easy maintenance, with pavers and drip irrigation creating a comfortable space for relaxing, entertaining, or enjoying evenings outdoors. The home also includes upgraded flooring throughout the main level, Lutron smart lighting, and an additional deeded parking space directly in front of the property that can accommodate a larger vehicle. Rancho Tesoro residents enjoy access to a resort style pool, BBQ area, playground, scenic walking trails, and two peaceful lakes. The community is also conveniently located near highly rated schools, parks, hiking trails, shopping, dining, and everything North County has to offer. With low HOA and Mello-Roos fees, this home offers an excellent combination of space, upgrades, convenience, and community amenities. Schedule your private showing and come experience the Rancho Tesoro lifestyle.

678 Gemstone Dr | MLS# NDP2606743

This single family home located at 678 Gemstone Dr, San Marcos, CA 92078 is currently listed for sale with an asking price of $1,125,000. This property was built in 2018 and has 4 bedrooms and 3 full baths with 2550 sq. ft. Gemstone Dr is located within the San Marcos Unified school district. Search San Marcos real estate on maryrosenthal.farrellsmyth.com today.

Property Features

Property Type: Residential - Single Family
Cooling: Central Air
Garage: 2 car attached
Heating: Electric
Lot Size: 0.08 Acres
Roof Type: Concrete
Stories: 2.0
Year Built: 2018

Amenities

Walk-In Pantry
Walk-In Closet(s)

Feature Descriptions

Association Amenities: Fire Pit, Maintenance Grounds, Maintenance Front Yard, Outdoor Cooking Area, Barbecue, Picnic Area, Playground, Pool, Pets Allowed
Community Features: Biking, Curbs, Foothills, Hiking, Street Lights
Days on Site: 5
Fireplace: None
HOA Fee: 240/ Monthly
Laundry: Inside, Upper Level
Lot: Back Yard
Lot Dimensions: 5000
Parcel#: 2221733006
Pool: Electric Heat, Heated, Association
Sewer: Public Sewer
Special View Info: Hills

Local Schools

School District: San Marcos Unified

Listed By / Shown By

Listed By

Agency Name: Coldwell Banker Realty
Agent Name: John Castillo
Agency Phone: 760-941-6888

agent picture

Shown By

Agent Name: Mary Rosenthal, DRE#00964075, REALTOR®
Agent Phone: (805) 459-8971
Agency Title: Farrell Smyth, Inc.

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Estimate Your Payment

Estimated Payment

$ 2,831.89 per month $2,503.76 Principal & Interest $0.00 Property Tax (data not provided by mls) $328.13 Homeowner's Insurance

Change Payment Information

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided 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. Information on this site was last updated 07/21/2026. The listing information on this page last changed on 07/21/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Tue 07/21/2026 12:00:23 AM EST) or CRMLS (last updated Mon 07/20/2026 4:53:11 PM EST). Real estate listings held by brokerage firms other than Farrell Smyth, Inc. may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.
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