317 Walnut Street, Costa Mesa, CA 92627
- 4 beds
- 3 baths
- 2,294 sq ft
- 8,046 sq ft lot
- Built 1957
$3,799,000
Open house
Open Houses
The home
About 317 Walnut Street
Located in the highly sought-after Eastside Costa Mesa, this stunning and thoughtfully expanded single-level residence seamlessly blends timeless style, modern luxury, and exceptional functionality. Offering 4 bedrooms, 3 bathrooms, and approximately 2,294 square feet of beautifully reimagined living space, this fully permitted home features an open-concept floor plan designed for effortless everyday living and sophisticated entertaining. A new custom glass Dutch door welcomes you into an inviting formal living and dining area, where an elegant statement chandelier and beautiful fireplace create a warm and impressive first impression. At the heart of the home is a custom chef’s kitchen featuring premium Thermador appliances, custom cabinetry, and beautifully selected finishes that combine style with functionality. The spacious primary suite is a private retreat filled with natural light and appointed with a walk-in closet featuring custom built-in organizers. The spa-inspired ensuite bath offers a serene escape with a freestanding soaking tub, an open shower with both rain and handheld shower heads, and a luxurious dual vanity. Throughout the home, engineered hardwood flooring, lavish designer tiles, sophisticated fixtures, and carefully curated details create a cohesive, elevated aesthetic. Thoughtfully upgraded from top to bottom, this home offers an impressive list of modern improvements, including a solar system, a new roof, new central air conditioning and ducting, a new 200-amp electrical panel, a new water heater, and new attic insulation. Designed for seamless indoor-outdoor living, a dramatic 12-foot-wide bifold door opens to the lush backyard oasis. Enjoy a newly replastered pool, refreshed landscaping, and a brand-new built-in BBQ island—creating the perfect setting for outdoor dining, entertaining, and relaxing year-round. Conveniently located near the Back Bay Nature Preserve, award-winning schools, the OC Fairgrounds, and the popular shops and restaurants along 17th Street, this exceptional Eastside Costa Mesa home offers the best of coastal Orange County living.
Property details for 317 Walnut Street
This 4-bedroom, 3-bath single-family home sits in Costa Mesa in Orange County. It offers 2,294 square feet of living space and is listed at $3,799,000, about $1,656 per square foot. The home was built in 1957. The MLS record lists the assessor parcel number as 426-292-04. Highlights include a private pool, a fireplace, single-story living, a two-car garage, an 8,046-square-foot lot, and central air. The detail sections on this page cover interior and exterior features, estimated taxes, HOA dues where they apply, and the map location.
Specifications
Home Details
At a glance
- Price
- $3,799,000
- Days On Site
- New Today
- Bedrooms
- 4
- Inside Area (SqFt)
- 2,294 sqft
- Total Baths
- 3
- Full Baths
- 3
- Partial Baths
- N/A
- Lot Size
- 8,046 SqFt
- Year Built
- 1957
- MLS® Number
- OC26227859
- Status
- Active
- Property Tax
- N/A
- HOA/Condo/Coop Fees
- N/A
- Sq Ft Source
- Owner
General Features
- Property Type
- Single Family Residence
- MLS Number
- OC26227859
- Year Built
- 1957
- Living Area (sq ft)
- 2,294
- Living Area Source
- Owner
- Lot Size (sq ft)
- 8,046
- Lot Size (acres)
- 0.1847
- Levels
- One
- Bedrooms
- 4
- Full Baths
- 3
- Garage Spaces
- 2
- Parking Spaces
- 2
- View
- None
- Private Pool
- Yes
- Parcel Number
- 42629204
- On Market Date
- 2026-10-21
- Listing Terms
- Standard
Interior Features
- Interior Features
- Cathedral Ceilings, Separate Formal Dining Room, Eat In Kitchen, High Ceilings, All Bedrooms Down, Main Level Primary, Walk In Closets
- Appliances
- Free Standing Range, Disposal, Gas Oven, Gas Range, Tankless Water Heater
- Flooring
- Wood
- Heating
- Central
- Cooling
- Central Air
- Fireplace
- Living Room
- Laundry
- Inside
- Main Level Bedrooms
- 4
- Main Level Bathrooms
- 4
- Entry Level
- 1
- Common Walls
- No Common Walls
- Rooms
- Other, Kitchen, Dining Room, Bedroom, Primary Bedroom, Living Room
Exterior Features
- Architectural Style
- Cottage
- Construction
- Drywall, Stone, Stucco, Wood Siding
- Foundation
- Concrete Perimeter
- Lot Features
- Front Yard, Level, Rectangular Lot, Sprinklers Timer, Sprinkler System
- Parking
- Driveway, Garage
- Fencing
- Block, Vinyl
- Pool Features
- In Ground, Private
- Spa
- None
- Sewer
- Public Sewer
- Water
- Public
- Utilities
- Electricity Connected, Natural Gas Connected, Sewer Connected, Water Connected
- Condition
- Additions Alterations, Turnkey
- Faces
- Northeast
- Units
- 1
Community Features
- Community Features
- Rural
The record
Property History for 317 Walnut Street
| Date | Event | Price | Note |
|---|---|---|---|
| Oct 21, 2026 | Listed for sale | $3,799,000 | |
| Jul 18, 2025 | Sold | $2,300,000 | Real Broker |
Added by Realatrends Real Estate
Flood, Fire and Earthquake Zones for 317 Walnut Street
We looked up this home's map point in public government maps. These facts are not part of the MLS listing.
Hazard and noise zones
- Flood zone
Zone X, area of minimal flood hazard. Outside FEMA's Special Flood Hazard Area.
FEMA National Flood Hazard Layer, FIRM panel 06059C0268J effective December 3, 2009. Checked October 15, 2026.
- Fire hazard severity zone
Not in a fire hazard severity zone on the State Fire Marshal's map.
CAL FIRE, State Fire Marshal map for Local Responsibility Areas, March 24, 2025. Checked October 15, 2026.
- Earthquake fault zone
Outside the Alquist-Priolo Earthquake Fault Zones.
California Geological Survey, Earthquake Fault Zones map, Newport Beach quadrangle, released July 1, 1986. Checked October 15, 2026.
- Liquefaction zone
Outside the liquefaction zones.
California Geological Survey, Seismic Hazard Zones map, Newport Beach quadrangle, released April 15, 1998. Checked October 15, 2026.
- Landslide zone
Outside the earthquake-induced landslide zones.
California Geological Survey, Seismic Hazard Zones map, Newport Beach quadrangle, released April 15, 1998. Checked October 15, 2026.
- Airport noise
Outside John Wayne Airport's 60 dB CNEL noise contour, 0.7 miles from it.
Airport Land Use Commission for Orange County, Airport Environs Land Use Plan noise contours. Checked October 15, 2026.
Internet and charging
- Fixed internet
Fiber: AT&T, up to 5,000 Mbps, at 19 of 20 residential locations in this census block. Cable: Spectrum, up to 1,000 Mbps, at 20 of 20. Fixed wireless: T-Mobile, up to 100 Mbps, at 18 of 20.
FCC National Broadband Map, provider-reported data as of December 31, 2025, for census block 060590632023003, not for this address. Not endorsed by the FCC. Checked October 15, 2026.
- EV charging
Nearest public charger 0.7 miles away (ChargePoint, 2 Level 2 ports). 457 public charging ports within 3 miles.
U.S. Department of Energy, Alternative Fuels Data Center. Straight-line distance. Checked October 15, 2026.
These facts are for the listing's map point, which can sit off the lot. A zone line can also cross a lot, and agencies revise their maps. In cities, the fire zone line follows the State Fire Marshal's 2025 map; each city adopts its own map and may add areas. These lines are not a Natural Hazard Disclosure. Check the official maps and the seller's disclosures before you rely on them. Sources for the earthquake zone lines: Reproduced with permission, California Geological Survey, Webservice of Official Maps of Alquist-Priolo Earthquake Fault Zones (2025). Reproduced with permission, California Geological Survey, Webservice of Official Maps of Seismic Hazard Zones (2025).
Official maps
Cost of ownership
Estimated monthly payment
7.40% · 30-yr fixed$
$30,005/mo
10% down · 30-year fixed · $379,900 down
Principal & interest$23,673
Mortgage insurance (est., over 80% LTV)$1,425
Property tax (est. 1.2%)$3,799
Home insurance (rough est., varies widely)$1,108
HOANot reported, not included
$25,950/mo
20% down · 30-year fixed · $759,800 down
Principal & interest$21,043
Property tax (est. 1.2%)$3,799
Home insurance (rough est., varies widely)$1,108
HOANot reported, not included
$23,319/mo
30% down · 30-year fixed · $1,139,700 down
Principal & interest$18,412
Property tax (est. 1.2%)$3,799
Home insurance (rough est., varies widely)$1,108
HOANot reported, not included
Estimated carrying cost
$4,907/mo
All cash · taxes and insurance only
Principal & interestNone (cash purchase)
Property tax (est. 1.2%)$3,799
Home insurance (rough est., varies widely)$1,108
HOANot reported, not included
Estimate only, not a loan offer or quote. Principal and interest use the Freddie Mac 30-year fixed average of 7.40% (week of Oct 15, 2026); your rate will differ. A loan this size is typically a jumbo loan, which prices differently. Tax and insurance are modelled, not billed amounts; tax uses a typical Costa Mesa rate, excluding Mello-Roos. Verify all figures. Full assumptions and disclosures.
Next steps
Buying 317 Walnut Street
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Selling near 317 Walnut Street
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The neighborhood
About Costa Mesa
Costa Mesa sits on the coastal tableland of central Orange County, bordered by Santa Ana, Huntington Beach, and Newport Beach, with its southern edge about a mile from the Pacific. South Coast Plaza, the Segerstrom Center for the Arts, the Orange County Fairgrounds, Orange Coast College, and the Eastside and Mesa Verde neighborhoods all fall within the Newport-Mesa Unified School District.
Costa Mesa home sales, past 12 months
- Homes sold
- 432
- Median price
- $1,651,500
- Median days on market
- 11
- Median per sq ft
- $965
Recorded MLS closings of single-family homes, Oct 14, 2025 to Oct 14, 2026. Days on market run from listing to going under contract.
Price per square foot against recent Costa Mesa sales
At $1,656 per square foot, this home's asking price is 72% above the Costa Mesa median of $965 for single-family homes that closed in the past 12 months.
Recent Costa Mesa sales
| Address | Closed | Price | Sq ft | Per sq ft | Days on market |
|---|---|---|---|---|---|
| 2239 Catherine | Oct 14, 2026 | $2,125,000 | 1,517 | $1,401 | 7 |
| 184 E Bay | Oct 9, 2026 | $2,260,000 | 1,452 | $1,556 | 12 |
| 1818 Samar | Oct 9, 2026 | $3,300,000 | 2,464 | $1,339 | 17 |
| 410 Lenwood | Oct 9, 2026 | $2,500,000 | 1,561 | $1,602 | 7 |
| 1815 Kinglet Court | Oct 9, 2026 | $2,225,000 | 3,109 | $716 | 107 |
Schools
Schools for 317 Walnut Street
As listed in the MLS record. Confirm attendance boundaries with the school district.
- Elementary
- Kaiser
- Middle
- Ensign
- High
- Newport Harbor
- District
- Newport Mesa Unified
Living in Costa Mesa covers its schools, parks and beaches.
Location
Location
Photographs
Photos of 317 Walnut Street, Costa Mesa
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Listed by Ken Tran of eXp Realty of California Inc
Listing information updated Oct 21, 2026 at 4:24 PM PT. Source: CRMLS.
This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. The display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, the Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.