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318 Avenida Costanso, San Clemente, CA 92672

$4.0M4bd · 4ba · 2,676 sqft
Lot 7,100 sqft•Single Family Residence•
Active
•13d on market•MLS# OC-26213782

Property Description

Panoramic ocean and golf course views, a brand-new high-end remodel, and a rarely available Southeast San Clemente location come together at 318 Avenida Costanso. Perched above the San Clemente Municipal Golf Course, this 4-bedroom, 4-bath residence has been completely reimagined from top to bottom and has never been lived in since completion. Expansive views stretch across the golf course and Pacific Ocean from the Dana Point Headlands to Cottons Point. The home makes a striking first impression with incredible curb appeal and a coastal contemporary mid-century design that complements its surroundings. An all-new exterior, roof, windows, doors, and architectural details set the tone for what awaits inside. The main level begins with a formal entry providing access to the oversized two-car garage and an attached private casita. The casita features its own bedroom, living area, kitchenette, full bathroom, walk-in closet with laundry hookups, and private sauna. This unique space can function as guest quarters, a home office, gym, wellness retreat, or combination of uses. Upstairs, the home opens into a spacious great room with vaulted ceilings and panoramic Pacific Ocean and golf course views. The open-concept kitchen, dining, and living areas come together as the heart of the home, framed by large multi-slide doors connecting to the west-facing deck and California room—ideal for dining, entertaining, or relaxing while taking in the coastal setting. Adjacent to the kitchen, a covered backyard patio creates another outdoor living space overlooking the private rear yard. Three additional bedrooms are located upstairs, including the primary suite, each with its own en-suite bathroom. The primary suite features vaulted ceilings, a generous walk-in closet, and a spa-inspired bathroom finished with floor-to-ceiling stone. The private backyard features an in-ground spa, multiple areas for lounging and entertaining, and tiered planter beds with mature citrus trees. Nearly every element of the property has been upgraded, including a brand-new roof, air conditioning, windows, doors, exterior finishes, mechanical systems, and much more. Located just above the San Clemente Municipal Golf Course—known locally as “The Muni”—the home offers convenient access to the 5 Freeway and some of San Clemente’s best beaches and surf breaks, including world-famous Lowers Trestles. Project by Inspired Coastal Designs.

Features & Amenities

FeeBuilt 1980

Property Details

Land Type
Fee
Year Built
1980
Property Type
Residential
Property Subtype
Single Family Residence
Parking Spaces
5
Garage Spaces
2
Heating
Central
Cooling
Central Air
View
Catalina, Ocean, Panoramic, Water
City
San Clemente
Zip Code
92672
County
Orange
Listed byUnknown Office, Casey Wootan

Mortgage Calculator

Current Rates

$
$
%
Monthly Payment
$20,226.18
Principal & Interest
Loan Amount
$3,200,000
Total Interest
$4,081,424
Total Payment Over 30 Years
$7,281,424
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

318 Avenida Costanso, San Clemente, CA 92672

San Clemente · Single Family Residence

$4.0M
Luxury Tier
Beds
4
Baths
4
Sqft
2,676
Lot
7,100 sqft
Year
1980
$/Sqft
$1495
Pool: No✓
Spa: Yes✓
View: city✓
Garage: 2-car✓

Listed 72.0% above the median closed sale of $2,325,000. Price per sqft ($1,495) is a 56% premium to closed comps ($958). Luxury tier — fewer comparable sales widen the confidence range.

Price Position

Positioned above the market — commands a premium.

Premium
Subject listed at $4.00M· $1,495/sqft
Total list price
Closed comps
vs closed median $2.33M
+$1.68M (+72.0%)
Active comps
vs active median $2.40M
+$1.60M (+66.7%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $1,045
+$450 (+43.1%)

Active Properties (5)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
785 Calle VallartaSan Clemente1987432,4607,161$559$1.38M494
1803 La CimaSan Clemente1965432,3525,440$1,020$2.40M12486
48 Santa ClaraSan Clemente1989332,4835,500$886$2.20M686
103 Avenida SantiagoSan Clemente1976432,1165,075$1,311$2.77M3185
405 Avenida SalvadorSan Clemente1964452,45110,950$1,448$3.55M4080
Total: 5 · Average3.83.42,372.46,825.2$1,044.8$2.46M41
Median2,451$2.40M

Closed Properties (5)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
522 Calle CuadraSan Clemente198409/30/2026432,3097,704$2.19M$2.25M$9721.022191
150 Avenida San AntonioSan Clemente200009/29/2026442,8855,355$3.19M$3.15M$1,0920.994789
5503 Costa EscondidaSan Clemente200109/08/2026432,4075,760$1.80M$1.80M$7481.006288
216 Avenida PrincesaSan Clemente200809/16/2026443,1635,250$3.90M$3.90M$1,2311.003686
19 Via SoriaSan Clemente200509/28/2026543,1125,489$2.40M$2.33M$7470.973285
Total: 5 · Average4.23.62,775.25,911.6$2.68M$2.68M$958—39.6
Median2,885$2.33M$2.33M

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.