1721 Gainsborough Rd is a 4,000 square foot house on a 0.49 acre lot with 4 bedrooms and 3 bathrooms. - it last sold on August 11, 1981 for $65,000. Based on Redfin's San Dimas data, we estimate the home's value is $1,377,094.
Single-familyProperty Type
1985Year Built
0.49 acresLot Size
$344Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,377,094
$1.3M since sold in August 1981$21K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 8% lower than the average sale price ($1.50M) of 5 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
May 20, 2017 • Final
Building
Demolish an existing patio cover and build a new lattice patio cover.
ADU
Demolition
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
Air Conditioning Type: Central
Heating Type: Central
Exterior
Pool Information
Has Pool
Property Information
Subdivision Name: 34857
Living Sq. Ft: 4,000
# of Units: 1
Legal Description: TR=34857 LOT 56
Lot Information
# of Buildings: 1
Land Sq. Ft: 21,206
Legal Lot Number: 56
Municipality Name: SAN DIMAS
Acres: 0.4868
Depth Footage: 168
Front Footage: 126
Zoning Code: SDSP4*
County Use Description: SINGLE FAMILY RESID
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 4,000
Stories: —
Lot Size: 0.49 acres
Style: Single Family Residential
Year Built: 1985
Year Renovated: 1985
County: Los Angeles County
APN: 8426035018
Home facts updated by county records on Oct 8, 2026
Around this home
Schools
K - 12
Preschool & daycare
Glen Oak Elementary School
Public K-6 • Assigned • 0.4mi
3/10
Royal Oak Middle School
Public 7-8 • Assigned • 1.3mi
8/10
Charter Oak High School
Public 9-12 • Assigned • 1.2mi
7/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
The Los Angeles County market is becoming more balanced, giving buyers a little more room to negotiate while well-priced homes can still attract strong interest. With homes taking longer to sell and buyers becoming more selective, pricing and...