317 Walnut Street, Costa Mesa, CA 92627
317 Walnut Street, Costa Mesa, CA 92627
Property Description
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.
Features & Amenities
Property Details
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Comparative Market Analysis
Luxury Tier · 5 active · 5 closed
Costa Mesa · Single Family Residence
Listed 5.0% below the median closed sale of $4,000,000. Price per sqft ($1,656) is a 34% premium to closed comps ($1,233). Luxury tier — fewer comparable sales widen the confidence range.
Price Position
Priced below the market — value advantage over the field.
Active Properties (5)
Active Comparables
| Address | City | Year | BD | BTH | SqFt | LotSz | LP/SqFt | LP | DIM | Score |
|---|---|---|---|---|---|---|---|---|---|---|
| 2038 Aliso Avenue | Costa Mesa | 1959 | 3 | 3 | 2,427 | 8,448 | $1,339 | $3.25M | 10 | 86 |
| 259 21st Street | Costa Mesa | 1954 | 4 | 3 | 2,413 | 8,640 | $1,573 | $3.79M | 3 | 81 |
| 288 Bay Street | Costa Mesa | 1958 | 4 | 4 | 2,429 | 6,000 | $1,398 | $3.40M | 24 | 78 |
| 1907 Leeward | Newport Beach | 1963 | 3 | 3 | 2,150 | 8,475 | $1,998 | $4.29M | 18 | 76 |
| 2206 Francisco Dr | Newport Beach | 1965 | 4 | 3 | 2,442 | 9,200 | $1,628 | $3.98M | 3 | 75 |
| Total: 5 · Average | 3.6 | 3.2 | 2,372.2 | 8,152.6 | $1,587.2 | $3.74M | 11.6 | |||
| Median | 2,427 | $3.79M | ||||||||
Closed Properties (5)
Closed Comparables
| Address | City | Year | Date | BD | BTH | SqFt | LotSz | LP | SP | SP/SqFt | SP/LP | DIM | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 308 18th Street | Costa Mesa | 1995 | 06/24/2026 | 4 | 3 | 3,039 | 8,509 | $3.90M | $3.75M | $1,233 | 0.96 | 140 | 74 |
| 412 Magnolia Street | Costa Mesa | 2008 | 02/27/2026 | 4 | 4 | 2,909 | 7,968 | $4.00M | $4.00M | $1,375 | 1.00 | 37 | 73 |
| 224 Flower Street | Costa Mesa | 2020 | 02/09/2026 | 4 | 4 | 3,278 | 6,308 | $4.19M | $4.19M | $1,278 | 1.00 | 34 | 67 |
| 275 Walnut | Costa Mesa | 2025 | 12/15/2025 | 5 | 5 | 3,271 | 6,381 | $4.38M | $4.30M | $1,315 | 0.98 | 53 | 65 |
| 175 Costa Mesa | Costa Mesa | 2019 | 07/01/2026 | 5 | 6 | 4,156 | 6,414 | $4.50M | $4.00M | $962 | 0.89 | 102 | 56 |
| Total: 5 · Average | 4.4 | 4.4 | 3,330.6 | 7,116 | $4.05M | $4.05M | $1,232.6 | — | 73.2 | ||||
| Median | 3,271 | $4.00M | $4.00M | ||||||||||
Market Analysis
List vs Sale $/SqFt
Sale Price Trend
Days on Market
Sale vs List Price
This analysis was generated automatically from MLS data. For an in-depth, human-reviewed valuation, contact Joseph Sardella at josephsardella@gmail.com.