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3645 Marlborough Ave AVESan Diego, CA 92105

For Sale

$819,000

Smart Buyer Rebate $8,190

Extensively renovated from top to bottom, this turnkey property showcases modern design and thoughtful craftsmanship throughout. The main residence features a bright, open-concept layout, a dedicated office with views of the front yard, designer bathrooms, custom tile work, luxury flooring, and a beautifully updated kitchen, custom cabinetry, and stainless steel appliances. The property also includes a detached bonus living space complete with its own kitchen, bathroom, bedroom, and living area, offering exceptional flexibility for extended family, guests, or potential rental income. This property presents a rare opportunity for homeowners, investors, and developers alike. Whether you're seeking a move-in-ready home, supplemental income potential, or future development opportunities, this versatile property delivers immediate enjoyment and long-term upside in a centrally located San Diego neighborhood close to shopping, dining, transportation, and major freeways.

Listed by John Freeman

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License #01931871

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eXp Realty of California Inc

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8584927178

Listed by Peter Middleton

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License #01224842

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eXp Realty of California Inc

Last updated July 24, 2026

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Source: CRMLS #260013449SD

Listing Facts

  • TypeSingle-family
  • NeighborhoodCastle
  • Bedrooms3
  • Bathrooms3
  • Days on Prevu58
  • Size1,081 sqft
  • Price per sqft$758

Amenities

  • Dishwasher
  • Parking
  • Swimming Pool

Location

Mortgage Calculator

Listing History

07/10/2026
Price Decreased
$819,000
06/16/2026
Price Decreased
$849,000
06/03/2026
Listed by eXp Realty of California Inc
$879,000

Property Details for 3645 Marlborough Ave AVE

Exterior

Construction

  • Roof: Shingle
  • Stories: 1
  • Stories Total: 1
  • Year Built: 1938

Measurements

  • Lot Size Source: Assessor

Financial

Taxes

  • Parcel Number: 4541720900

Interior

Features

  • Appliances: Dishwasher, Microwave, Refrigerator, Gas Cooktop
  • Interior Features: Walk-In Closet(s)

Measurements

  • Living Area: 1,081
  • Living Area Source: Estimated

Rooms

  • Bathrooms Full: 3
  • Bathrooms Total Integer: 3
  • Bedrooms Total: 3

Other

Location

  • Subdivision Name: City Heights

Parking

Parking

  • Garage: Yes
  • Parking Features: Garage

Utilities

Equipment

  • Cooling: Zoned
  • Has Cooling: Yes
  • Heating: Natural Gas, Zoned
  • Has Heating: Yes
  • Laundry Features: Gas Dryer Hookup
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 3 bedrooms and 3 bathrooms in this single-family home at 3645 Marlborough Ave AVE.

How does 3645 Marlborough Ave AVE compare to other single-family homes in Castle?

This single-family home is listed 3% below the average price for single-family homes in Castle and has been on the market for 12 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 1,081 sqft.

3645 Marlborough Ave AVE is a 3-bedroom, 3-bath single-family home for sale in San Diego CA 92105. On Prevu for 58 days at $819,000. This includes a recent price decrease of $30,000. This property features 1,081 square feet of living space, located in Castle. The median listing price for single-family homes in this area is $800,000. The home offers dishwasher, parking, and swimming pool. Explore more single-family home listings in San Diego.

Based on information from California Regional Multiple Listing Service, Inc. and/or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by Prevu or the MLS. Information is provided exclusively for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.