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Executive Summary

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.

Property Facts

Price $1,298,592 CAD
Sale Type Investment
No. Lots 1
Property Type Land
Property Subtype Commercial
Total Lot Size 2.62 AC

1 Lot Available

Lot

Price $1,298,592 CAD
Price Per AC $495,645.67 CAD
Lot Size 2.62 AC
Fairly walkable
50/100
Exceptionally drivable
100/100
Limited public transit
30/100
Somewhat bikeable
30/100
  • Listing ID: 40339136

  • Date on Market: 2026-04-29

  • Last Updated:

  • Address: 540 Plumosa Ave, Vista, CA 92081

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