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21 Castenada Avenue, 
San Francisco, CA 94116

$1,695,000


5

Beds


7

Baths


4,163

Sq Ft


Single Family

Active

Listed by

Kate D Tomassi

Sotheby'S International Realty

Last updated:

May 24, 2026, 12:01 AM

MLS#

426132865

Source:

CABCREIS

About This Home

21 Castenada Avenue

Contemporary hillside home on a serene block in Forest Hill. This expansive residence offers five bedrooms and five baths (four full and two half), along with a spacious family/media room, multiple potential den and office spaces, several decks, and a two-car side-by-side garage. An elevator services the home’s upper four floors. At the heart of the home is a dramatic great room with soaring double-height ceilings and walls of windows framing verdant views toward the western slopes of Twin Peaks. A full-width deck extends the living space to the outdoors, creating an ideal setting for entertaining or relaxing above the treetops. The chef’s kitchen, with an island and premium appliances, a wet bar, and a powder room complete this level. The top floor is dedicated to a luxurious primary suite, featuring glass doors opening to a Juliet balcony overlooking the quiet street. The spa-like bath includes a soaking tub, separate walk-in shower, generous walk-in closet, and an additional half bath. Also on this level is a second en-suite bedroom with access to the rear deck, plus a flexible area ideal for a home office or sitting room. The main entry floor from street level features an en-suite bed and full bath, as well as a den, both opening onto a shared deck. This level also provides direct access to the side-by-side garage. On the mezzanine level below are two additional bedrooms, a full bath, and the laundry room. The mezzanine itself is spacious enough to serve as an additional lounge or den, with stairs leading down to the great room level below. One floor beneath the great room is a large family/media room with its own deck, offering yet another flexible gathering space. The lowest level features extensive storage and finished bonus space with endless possibilities for a gym, studio, workshop, wine storage, or an additional office. This level also opens directly to the backyard. Ample storage throughout. The property needs significant work, including structural. Call Kate to discuss and set up a private showing.

Home Facts

Single Family

7 Baths

5 Bedrooms

Built in 2009

Price Summary

1,695,000

$407 per Sq. Ft.

MLS #:

426132865

Last Updated:

May 24, 2026, 12:01 AM

Added:

2 month(s) ago


Rooms & Interior

Bedrooms

Total Bedrooms:

5

Bathrooms

Total Bathrooms:

7

Full Bathrooms:

5

Interior

Living Area:

4,163 Sq. Ft.


Structure

Structure

Building Area:

4,163 Sq. Ft.

Year Built:

2009


Lot

Lot Size (Sq. Ft):

3,327


Finances & Disclosures

Finances

Price:

$1,695,000

Price per Sq. Ft:

$407 per Sq. Ft.

Source:CABCREIS
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21 Castenada Avenue
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Mon, May 25
12:00 PM02:00 PM
Tue, May 26
01:00 PM03:00 PM
Wed, May 27
03:00 PM04:30 PM
Thu, May 28
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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.