431 Mainsail Rd is a 2,021 square foot house on a 9,148 square foot lot with 3 bedrooms and 3 bathrooms. - it last sold on March 10, 1981 for $111,000. Based on Redfin's Oceanside data, we estimate the home's value is $1,107,283.
Single-familyProperty Type
1981Year Built
9,148 sq ftLot Size
$548Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,107,283
$996K since sold in March 1981$2,000 since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 1.7% lower than the average sale price ($1.13M) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning and permits
Zoning
Permits
RS
Single-Family Residential District
To provide opportunities for single-family residential land use in neighborhoods, subject to appropriate standards. Duplexes, triplexes and fourplexes existing as of the effective date of this ordinance are allowed to remain, but all new residential construction shall be single-family dwellings or approved accessory structures (except as otherwise noted in Section 1030). In the RS District, the base density is 3.6 du per gross acre and the maximum potential density is 5.9 du per gross acre.
Permitted uses
Include but are not limited to:
Day care facility
Housing-Single unit
Housing-Senior
Housing-Other
Infrastructure
Jul 22, 2014 • Final
Bld residential pme
Remove and replace the furnace and ducting. Install a new air conditioning condenser and coil.
HVAC
May 2, 2014 • Final
Bld solar pv system
Install a roof-mounted photovoltaic system with modules and an electrical panel upgrade.
Electrical
Solar
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Heating & Cooling
Heating Fuel Type: Gas
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 7
Exterior
Exterior Information
Physical Condition: Good
Foundation Type: Slab
Building Style Type: Conventional
Construction Type: Frame
Building Construction Quality: Good
Exterior Wall: Stucco
Building Type: Detached
Property Information
Subdivision Name: SEA MESA
Living Sq. Ft: 2,021
Building Sq. Ft: 2,021
# of Units: 1
# of Stories: 1.5
Legal Description: LOT 179 TR 9359
Parking & Garage Information
# of Parking Spaces: 2
Parking Type: Garage/Carport
Lot Information
# of Buildings: 1
Land Sq. Ft: 9,148
Legal Lot Number: 179
Acres: 0.21
Zoning Code: R1
County Use Description: 1 FAMILY RESIDENCE
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 3.0
Sq. Ft.: 2,021
Stories: 1.5
Lot Size: 9,148 square feet
Style: Single Family Residential
Year Built: 1981
Year Renovated: 1981
County: San Diego County
APN: 1624621400
Home facts updated by county records on Aug 20, 2026
Around this home
Schools
Pablo TAC School of the Arts
Public K-5 • Assigned • 0.9mi
4/10
Lincoln Middle School
Public 6-8 • Assigned • 1.4mi
4/10
Oceanside High School
Public 9-12 • Assigned • 2.1mi
5/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
Oceanside offers a great mix of coastal living and everyday convenience, with miles of beaches, a vibrant downtown, the Oceanside Harbor and Pier, and plenty of restaurants, shopping and entertainment. Its location also provides easy access to...