REALATRENDS REAL ESTATE SERVICES, INC 949·494·8830
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For Sale|Single Family ResidenceActive

318 Avenida Costanso, San Clemente, CA 92672

  • 4 beds
  • 4 baths
  • 2,676 sq ft
  • 7,100 sq ft lot
  • Built 1980

MLS# OC26213782 · Listed Oct 1, 2026 · New Today

Open house

Open Houses

The home

About 318 Avenida Costanso

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.

Property details for 318 Avenida Costanso

This 4-bedroom, 4-bath single-family home sits in San Clemente in Orange County. It offers 2,676 square feet of living space and is listed at $4,000,000, about $1,495 per square foot. The home was built in 1980. The MLS record lists the assessor parcel number as 060-083-30. Highlights include ocean and Catalina views, a private spa, a fireplace, an attached two-car garage, a 7,100-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
$4,000,000
Days On Site
New Today
Bedrooms
4
Inside Area (SqFt)
2,676 sqft
Total Baths
4
Full Baths
4
Partial Baths
N/A
Lot Size
7,100 SqFt
Year Built
1980
MLS® Number
OC26213782
Status
Active
Property Tax
N/A
HOA/Condo/Coop Fees
N/A
Sq Ft Source
Plans

General Features

Property Type
Single Family Residence
MLS Number
OC26213782
Year Built
1980
Living Area (sq ft)
2,676
Living Area Source
Plans
Lot Size (sq ft)
7,100
Lot Size (acres)
0.163
Levels
Two
Bedrooms
4
Full Baths
4
Garage Spaces
2
Parking Spaces
5
View
Catalina, Ocean, Panoramic, Water
Parcel Number
06008330
On Market Date
2026-10-01
Listing Terms
Standard

Interior Features

Heating
Central
Cooling
Central Air
Fireplace
Living Room
Laundry
Inside, In Garage, See Remarks, Upper Level
Main Level Bedrooms
1
Main Level Bathrooms
1
Entry Level
1
Common Walls
No Common Walls
Rooms
Great Room

Exterior Features

Lot Features
Back Yard
Pool Features
None
Spa
In Ground, Private
Sewer
Public Sewer
Water
Public
Units
1

Community Features

Subdivision
NONE
Community Features
Sidewalks

The record

Property History for 318 Avenida Costanso

DateEventPriceNote
Oct 1, 2026 Listed for sale $4,000,000
May 22, 2025 Sold $1,995,000 Berkshire Hathaway HomeService

Cost of ownership

Estimated monthly payment

7.03% · 30-yr fixed
$
$30,057/mo
10% down · 30-year fixed · $400,000 down
Principal & interest$24,023
Mortgage insurance (est., over 80% LTV)$1,500
Property tax (est. 1.01%)$3,367
Home insurance (rough est., varies widely)$1,167
HOANot reported, not included
$25,888/mo
20% down · 30-year fixed · $800,000 down
Principal & interest$21,354
Property tax (est. 1.01%)$3,367
Home insurance (rough est., varies widely)$1,167
HOANot reported, not included
$23,219/mo
30% down · 30-year fixed · $1,200,000 down
Principal & interest$18,685
Property tax (est. 1.01%)$3,367
Home insurance (rough est., varies widely)$1,167
HOANot reported, not included
Estimated carrying cost
$4,534/mo
All cash · taxes and insurance only
Principal & interestNone (cash purchase)
Property tax (est. 1.01%)$3,367
Home insurance (rough est., varies widely)$1,167
HOANot reported, not included

Estimate only, not a loan offer or quote. Principal and interest use the Freddie Mac 30-year fixed average of 7.03% (week of Sep 24, 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 San Clemente rate, excluding Mello-Roos. Verify all figures. Full assumptions and disclosures.

Next steps

Buying 318 Avenida Costanso

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Selling near 318 Avenida Costanso

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The neighborhood

About San Clemente

San Clemente is the southernmost city in Orange County, founded in the 1920s by Ole Hanson as a Spanish Village by the Sea of white-stucco, red-tile-roofed homes overlooking the Pacific. Landmarks include the 1928 pier, the Beach Trail from North Beach to Calafia Beach, Avenida Del Mar, and the Capistrano Unified School District.

San Clemente home sales, past 12 months

Homes sold
449
Median price
$1,920,000
Median days on market
12
Median per sq ft
$821

Recorded MLS closings of single-family homes, Sep 24, 2025 to Sep 24, 2026. Days on market run from listing to going under contract.

Price per square foot against recent San Clemente sales

This home, asking 12-month median Recent sales, listed below

At $1,495 per square foot, this home's asking price is 82% above the San Clemente median of $821 for single-family homes that closed in the past 12 months.

Recent San Clemente sales

AddressClosedPriceSq ftPer sq ftDays on market
228 Calle Campesino Sep 24, 2026 $4,076,000 3,054 $1,335 100
3334 Calle La Veta Sep 24, 2026 $1,175,000 1,489 $789 61
127 Avenida Del Poniente Sep 24, 2026 $1,600,000 1,433 $1,117 3
7 Campanilla Sep 24, 2026 $2,225,000 3,880 $573 13
3336 Paseo Halcon Sep 24, 2026 $1,135,000 1,618 $701 5

Schools

School District for 318 Avenida Costanso

As listed in the MLS record. Confirm attendance boundaries with the school district.

The MLS record lists the Capistrano Unified.

Living in San Clemente covers its schools, parks and beaches.

Location

Location

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Listed by Casey Wootan of CENTURY 21 Affiliated

Listing information updated Oct 1, 2026 at 2:51 PM PT. Source: CRMLS.

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