21010 Cornerstone
Walnut, CA 91789
Listing broker / agent: Seven Gables Real Estate · AJ Hoover · ajh@sevengables.com · CRMLS
MLS # PW26223459 · Last checked Oct 24, 2026 03:31 UTC
About this property
Welcome to 21010 Cornerstone, nestled in a highly sought-after neighborhood in Walnut. This spacious 4-bedroom, 3-bathroom home offers a wonderful blend of comfort, functionality, and inviting living spaces, making it an ideal place to call home. The thoughtfully designed interior features an updated kitchen that opens seamlessly into a spacious living room, creating an open and welcoming atmosphere perfect for entertaining guests or enjoying everyday living. The expansive main living area provides plenty of room to gather with family and friends, while a beautiful private balcony just off the living space offers the perfect spot to enjoy the fresh air, unwind, and relax. The generously sized primary suite serves as a comfortable retreat, complete with a walk-in closet and an en-suite bathroom featuring a dual-sink vanity and walk-in shower. Additional conveniences include a dedicated laundry room and an attached two-car garage, providing practical storage and everyday ease. Beyond the home itself, residents can enjoy a desirable community lifestyle with access to a swimming pool, neighborhood park, and BBQ area—ideal for outdoor recreation, gatherings, and making lasting memories. Located within a community surrounded by award-winning schools, this property offers an appealing combination of space, convenience, and lifestyle in the heart of Walnut. With its inviting layout, desirable amenities, and sought-after location, 21010 Cornerstone presents a wonderful opportunity to enjoy comfortable living in a welcoming community.
Property details
- MLS number
- PW26223459
- Status
- Active
- Type
- Residential
- Subtype
- Condominium
- Beds / baths
- 4 Beds • 3 Baths
- Living area
- 1,830 Sq Ft
- Lot size
- 0.4011 acres
- County
- Los Angeles
- Year built
- 2018
- Stories
- 2
More property detailsCollapse
Listing
- Days on market
- 8
Building
- Year built
- 2018
- Year built source
- Public Records
- Stories
- 2
- Building stories
- 3
- Levels
- Two, Three Or More
- Entry level
- 1
- Construction
- Stucco
- Roof
- Tile
- Condition
- Turnkey
- Living area source
- Assessor
Bathrooms
- Full bathrooms
- 3
Rooms & interior
- Main-level bedrooms
- 1
- Main-level bathrooms
- 1
- Rooms
- Foyer, Laundry, Living Room, Primary Bathroom, Primary Bedroom, Other, Dining Room
- Appliances
- Dishwasher, Gas Range, Microwave, Refrigerator, Dryer, Washer
- Interior features
- Separate Formal Dining Room, Eat In Kitchen, Granite Counters, Multiple Staircases, Stone Counters, Entrance Foyer, Walk In Closets
- Flooring
- Laminate
- Heating
- Central
- Cooling
- Central Air
- Fireplace
- None
- Laundry
- Inside, Laundry Room
Exterior & parking
- Total parking spaces
- 2
- Garage spaces
- 2
- Parking
- Garage
- Attached garage
- Yes
- Pool
- Community
- Spa
- Association
- Patio / porch
- Deck
- Exterior features
- Rain Gutters
- Lot size source
- Assessor
- Property outlook
- Neighborhood
Utilities & community
- Water
- Public
- Sewer
- Public Sewer
- Community features
- Dog Park, Gutters, Park, Sidewalks, Pool
- Association amenities
- Dog Park, Barbecue, Picnic Area, Playground
Fees & lease terms
- Association
- Yes
- Association fee
- $306.00
- Association fee frequency
- Monthly
Schools reported in the listing
- High school district
- Walnut Valley Unified
School information is supplied with the listing. Confirm current attendance boundaries and enrollment eligibility directly with the school district.
Nearby public schools
Nearby does not mean assigned. These are approximate straight-line distances from the property, not walking or driving routes. Confirm attendance boundaries, enrollment eligibility, grades and current school status directly with the district.
| School / district | Grades | Distance |
|---|---|---|
| Walnut High (school website, opens in a new tab) Walnut Valley Unified · Walnut | 9–12 | 0.3 mi |
| Suzanne Middle (school website, opens in a new tab) Walnut Valley Unified · Walnut | 6–8 | 0.6 mi |
| Vejar Elementary (school website, opens in a new tab) Walnut Valley Unified · Walnut | K–5 | 0.8 mi |
| Ron Hockwalt Academies (Continuation) (school website, opens in a new tab) Walnut Valley Unified · Walnut | 9–12 | 0.8 mi |
| Walnut Elementary (school website, opens in a new tab) Walnut Valley Unified · Walnut | K–5 | 1.1 mi |
| Cyrus J. Morris Elementary (school website, opens in a new tab) Walnut Valley Unified · Walnut | K–5 | 1.2 mi |
| Leonard G. Westhoff Elementary (school website, opens in a new tab) Walnut Valley Unified · Walnut | K–5 | 1.7 mi |
| Armstrong Elementary (school website, opens in a new tab) Pomona Unified · Diamond Bar | Not reported | 1.7 mi |
Source: California Department of Education · 2025-26 school locations. Downloaded Oct 2, 2026 UTC. This annual snapshot may not reflect later changes. Public schools only; not a complete list of education options. No ratings or attendance assignments are provided.
Check the California School Directory ↗Price and tax history
Asking price
- Current asking price
- $948,000
- MLS-reported original asking price
- $948,000
| Observed (UTC) | Asking price |
|---|---|
| Oct 15, 2026 19:28 | $948,000 |
MLS values are reported for this listing, not prior sales. Observation dates show when our importer saw an asking price, not when the MLS changed it. Up to 24 observations are retained; changes between refreshes may be missed. This is not a complete price or sales history.
Property taxes
Tax history is not available from the imported listing data.
Source: MLS feed. Only supplied tax years are shown, up to 10 years; this is not a county tax archive. Amounts may be corrected and taxes may change after purchase. Verify assessments and current taxes with the county. These values do not automatically fill the payment calculator.
Market trends in Walnut
Active residential homes for sale in Walnut, CA, available through this website's authorized feed. Includes residential subtypes; excludes rentals. Not the entire market or a valuation of this property.
Observed price activity · past 30 days
19 currently active listings have an observed price-change pair ending in this period. A listing can appear in both counts.
Calculated 2026-10-24 03:40 UTC. Source: this website's authorized MLS inventory. Import progress, freshness rules and coverage affect the figures. Medians exclude missing/invalid values; price per sq ft is the median of individual listing ratios. Price observations are limited to the last 24 per listing and may miss changes between refreshes. This is not a complete 30-day market report, historical inventory trend, appreciation measure, or sold-price analysis.
Payment calculator
Explore a fixed-rate loan scenario. The price comes from this listing; a 20% down payment and 30-year term are starting assumptions, not requirements. Enter your own interest rate—not APR—and estimated costs.
Illustration only—not a rate quote, preapproval, lending offer or affordability determination. Assumes equal monthly payments on a fully amortizing fixed-rate loan; no adjustable rates, interest-only periods or balloon payments. Excludes closing costs, utilities, maintenance, special assessments and other unentered costs. Actual payments and escrow can differ. Review a Loan Estimate with your lender.
Understanding homeownership costs — CFPB ↗