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538 Plumosa Ave
For Sale $999,999
$999,999
- Unknown Bedrooms
- Unknown Bathrooms
- Unknown Sq Ft
- 114,127 Sq Ft
Description
The Mainsail Horizons of Vista Project
RECORD ID: PDS2017-MPA-17-012; APN 217-131-58
The Mainsail Horizons of Vista project (PDS2017-MPA-17-012) consists of an application for a Major Use
Permit to allow the construction of an Assisted Living and Memory Care facility on an approximately 2.6-
acre vacant property. The site supports two more-or-less discrete plant communities or habitats: Non-native
Grassland and Disturbed/Developed habitat. The project as proposed will impact biological resources,
resulting in a need for mitigation. Mitigation must take place offsite in a County-approved location due to
full site use for development purposes. In addition, an avian nesting survey and/or seasonal restrictions on
any future site development are recommended to ensure project consistency with the Migratory Bird Treaty
Act and the California Fish and Game Code.
The Mainsail Horizons of Vista project is an application to allow the development of an approximately 2.6-
acre parcel (APN 217-131-58) under a Major Use Permit (MUP) allowing the construction of an Assisted
Living and Memory Care facility. As designed, the facility will support a 59,148 square-foot 4-story building
along with parking spaces, a swimming pool, landscaping, other improvements and associated
infrastructure. The 2.6-acre project site is located southwest of State Route 78 and fronting Plumosa Avenue
on unincorporated County lands between the Cities of Vista and San Marcos.
Amenities
Garage
Pool
Garden
Security System
Internet
Telephone
Heating
Fireplace
Balcony & Patio
TV / Cable
Laundry
Hardwood Floors
Spa
Air Conditioning
Solar Power
Floor Plan
Great Views
Natural Light
Quiet
Water View
Elevator
Guest Unit(s)
Furnished
220 Volt
Property Details
| List Price | $999,999 |
| Property Type | Lots/Land |
| Usable Sqft | Unknown |
| Number of Stories | 0 stories |
| Parking Spots | 0 spots |
| Year Built | 0 |
| Last Sold | Unknown |
| Sold Price | Unknown |
| HOA Fees: | $0 |
| Association Name: | Unknown |
| Association Amenities: | Unknown |
| APN # | 2171315800 |
| MLS # | GD25120984 |
| Property ID | 321847194 |
| Lot Sqft | 114,127 |
| Zoning | Residential Single |
| Days on Market | 249 |
| Original List Price | $1,295,000 |
| Date Updated | January 20, 2026 |
| Date Created | May 30, 2025 |
Listing Provided By
Sean Madadian an agent of . Lic #01066622
© 2026 CRMLS. All rights reserved. Some listings on this website are from CRMLS as of January 20, 2026 The 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.
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Robert Crawford
REAL ESTATE AGENT