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259 East 21st Street, Costa Mesa, CA 92627

$3.79M4bd · 3ba · 2,413 sqft
Lot 8,640 sqft•Single Family Residence•
Active
•4d on market•MLS# NP-26230733

Property Description

Resort-style living meets Eastside Costa Mesa charm in this beautifully reimagined retreat, where every space offers the option to both unwind and effortlessly entertain. Stunning from the curb, mature olive trees and lush landscaping designed by Chelsea Corinne Studio frame the welcoming porch and timeless, crisp white facade. Inside, the four-bedroom, three-bathroom main home opens into a light-filled great room beneath a vaulted, wood-planked ceiling, where a cozy fireplace anchors the living space. The gourmet kitchen is a natural gathering place, featuring white shaker cabinetry, classic subway tile, and a large eat-at island. Just off the kitchen, a generous dedicated dining area is bathed in natural light beneath a bespoke chandelier. An additional room with a bar and beverage refrigerators is ideal for dining or lounging and opens through accordion doors to the private backyard. A walk-in pantry with integrated laundry keeps everyday life beautifully organized. The primary suite is a true sanctuary, with folding glass doors that open directly to the pool, plus an ensuite bathroom and generous closet space. Additional bedrooms offer flexibility for family, guests, or a dedicated home office. Step outside and the resort experience comes to life. Set on an 8,600+ sf lot and enclosed by mature hedges, the backyard provides complete privacy around a pool, spa, and fire pit. An outdoor dining area, thriving garden, and plenty of room for lounge seating and an outdoor television make this a setting to enjoy from sunny afternoons to evenings under the stars. Across the patio sits a fully equipped, recently built from the ground-up ADU with a kitchen, bathroom, and vaulted ceiling. Folding glass doors and a pass-through window to an outdoor bar counter connect it seamlessly to the yard. Use it as a guest house, a poolside entertaining space, a studio, or a private suite for visiting family. Beyond your own backyard escape, enjoy the best of Eastside Costa Mesa living with all that Newport Beach has to offer right at your fingertips. The boutiques, coffee shops, and restaurants along 17th Street are just moments away, along with neighborhood parks and the Back Bay trails. The beach, Newport Harbor, and the OC Fair & Event Center are a short drive away, with convenient access to the 55 and 405 freeways.

Features & Amenities

FeeBuilt 1954

Property Details

Land Type
Fee
Year Built
1954
Property Type
Residential
Property Subtype
Single Family Residence
Parking Spaces
0
Garage Spaces
0
Heating
Central
Cooling
Central Air, Wall/Window Unit(s)
Flooring
Wood
City
Costa Mesa
Zip Code
92627
County
Orange
Listed byCompass, Mark Taylor

Mortgage Calculator

Current Rates

$
$
%
Monthly Payment
$19,189.59
Principal & Interest
Loan Amount
$3,036,000
Total Interest
$3,872,251
Total Payment Over 30 Years
$6,908,251
This calculator provides estimates only. Actual mortgage payments may include taxes, insurance, HOA fees, and PMI. Contact a lender for accurate quotes.

Comparative Market Analysis

Luxury Tier · 5 active · 5 closed

259 East 21st Street, Costa Mesa, CA 92627

Costa Mesa · Single Family Residence

$3.79M
Luxury Tier
Beds
4
Baths
3
Sqft
2,413
Lot
8,640 sqft
Year
1954
$/Sqft
$1573
Pool: Yes✓
Spa: Yes✓

Listed 5.1% below the median closed sale of $4,000,000. Luxury tier — fewer comparable sales widen the confidence range.

Price Position

Priced below the market — value advantage over the field.

Price advantage
Subject listed at $3.79M· $1,573/sqft
Total list price
Closed comps
vs closed median $4.00M
−$205K (−5.1%)
Active comps
vs active median $3.50M
+$296K (+8.5%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $1,461
+$112 (+7.7%)

Active Properties (5)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
317 Walnut StreetCosta Mesa1957432,2948,046$1,656$3.80M1186
2038 Aliso AvenueCosta Mesa1959332,4278,448$1,339$3.25M1085
2206 Francisco DrNewport Beach1965432,4429,200$1,628$3.98M382
288 Bay StreetCosta Mesa1958442,4296,000$1,398$3.40M2478
226 Santa Isabel AveCosta Mesa1950442,7297,140$1,282$3.50M8074
Total: 5 · Average3.83.42,464.27,766.8$1,460.6$3.58M25.6
Median2,429$3.50M

Closed Properties (5)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
1924 Beryl LaneNewport Beach195604/24/2026442,5717,920$4.30M$4.05M$1,5750.944384
412 Magnolia StreetCosta Mesa200802/27/2026442,9097,968$4.00M$4.00M$1,3751.003779
1633 SantiagoNewport Beach196305/21/2026442,72510,540$4.20M$3.98M$1,4590.955479
1842 SantiagoNewport Beach196709/17/2026432,50012,035$4.39M$4.30M$1,7210.982977
1839 SantiagoNewport Beach196406/17/2026432,5509,047$3.79M$3.73M$1,4610.985874
Total: 5 · Average4.03.62,6519,502$4.01M$4.01M$1,518.2—44.2
Median2,571$4.00M$4.00M

Market Analysis

List vs Sale $/SqFt

Sale Price Trend

Days on Market

Sale vs List Price

AI-generated CMA

This analysis was generated automatically from MLS data. For an in-depth, human-reviewed valuation, contact Joseph Sardella at josephsardella@gmail.com.