Mary Lou Castellanos - Sotheby's International Realty, San Francisco

Mary Lou Castellanos - Sotheby's International Realty, San Francisco 25+ years of residential Real Estate expertise. Highest Sale in SF MLS history. Works with buyers, se Morgan Chase, HSBC and Capital One.

One of the nation’s most successful real estate professionals, Mary Lou offers her clients extensive knowledge of San Francisco’s rich history, diverse communities and unique real estate market. Her stellar career has been built over more than two decades of representing a broad range of properties and clientele. She has been ranked among the top 25 agents of Sotheby’s International Realty® and is

consistently in the top 2% of the nearly 50,000 worldwide sales associates of the firm’s parent company, NRT. Mary Lou has earned the trust and respect of discriminating buyers, sellers and colleagues alike, and is highly regarded for her business acumen, work ethic and affable personality. She shows a singular dedication to representing clients ranging from first-time home buyers, to celebrities, CEOs and entrepreneurs. Her portfolio of properties sold is equally as diverse and includes over 125 bank-owned homes sold since the end of 2008, high-end condominiums and co-ops and, at $28.5 million, the highest priced home in San Francisco MLS history. Mary Lou’s business background, including a degree in International Business, and her travels to more than 45 countries, have imbued in her a sensitivity to the needs of her international clients and have enhanced her ability to work with corporate clientele such as Bank of America, J.P. Accordingly, her work has drawn the attention of the Wall Street Journal as well as local media. Mary Lou’s global experience and community involvement includes humanitarian and aesthetic endeavors as well. She participated in the Vietnamese and Angolan air lifts, as well as the Hadj airlifts, bringing West Africans to Saudi Arabia for their pilgrimage to Mecca. A culinary aficionado, she attends international cooking classes and founded Pantry411.com, a website dedicated to assisting fellow food enthusiasts in finding and exploring local ingredients. She is a past president of Pathways For Kids, a current Board member of Enterprise for High School Students, and an ongoing co-chair of its “Private Collections” art tour.

✨ Just Sold! ✨ After 48 years in the same family, the extraordinary residence at 38 Presidio Terrace has entered its nex...
12/11/2025

✨ Just Sold! ✨
After 48 years in the same family, the extraordinary residence at 38 Presidio Terrace has entered its next chapter — closing at $11,335,000.

With the artistry of , we painted, staged, refinished hardwood floors, updated light fixtures, and reimagined the kitchen to elevate the home’s timeless character and captivate today’s buyers.

Behind the scenes, we partnered with renowned architect David Armour of to design plans for a transformative expansion — adding 2,340 sq. ft. to the full basement and reconfiguring the main level for modern living.

This one-of-a-kind property was marketed with the full strength of Sotheby’s International Realty, combining vision, preparation, and global reach to deliver an exceptional result.

🏡 Legacy honored. Potential unlocked. Marketed to perfection.

✨ You’re Invited to an Extraordinary Estate Sale! ✨Before I list the historic 1865 “Sylvester House” at 1556 Revere Aven...
12/11/2025

✨ You’re Invited to an Extraordinary Estate Sale! ✨

Before I list the historic 1865 “Sylvester House” at 1556 Revere Avenue, The Yes Co. is opening its doors for a 5-day estate sale inside this 8,000 sq ft San Francisco landmark. Explore Victorian furniture, fine art, global décor, collectibles, clothing, garden pieces & more—decades of curated character in one unforgettable home.

Browse photos & details → https://www.theyesco.com/current-sale

🔹 FURNITURE, FINE ART & FINERY
🔹 1556 REVERE AVE / LANE STREET (Near 3rd St.)
🔹 3 LEVELS • 8,000 SQ FT
📅 DEC. 10th – 14th
🔹 Wed–Sat 10–4 | Sun 10–2

Once the sale wraps, I’ll proudly bring this remarkable property to market. 🏡✨

11/09/2025

✨ Just Listed — Classic San Francisco Charm Meets Modern Comfort ✨
1546 25th Avenue | Central Sunset District
🏡 3 Bedrooms | 2 Bathrooms
📐 2,081 sq. ft. (approx.) | Lot: 3,000 sq. ft. (approx.)
🔥 Spacious rear yard with deck & fire pit
🚗 2-car side-by-side garage
🌿 Central patio + lower-level suite — perfect for guests or entertaining
Built in 1936, this timeless home blends vintage elegance with today’s lifestyle — hardwood floors, arched doorways, and sunlit spaces that invite you in.
💰 Asking: $1,595,000
📅 Open House:
— Sunday, 2–4 PM
— Tuesday, 1–3 PM
⏰ Offers due Friday at 2 PM — this one won’t last!
👉 More info & photos: www.1546Twentyfifth.com

✨ From Home Depot to Haute Couture ✨Amy Weaver Designs worked her magic on my bathroom, and I can’t believe the transfor...
09/30/2025

✨ From Home Depot to Haute Couture ✨

Amy Weaver Designs worked her magic on my bathroom, and I can’t believe the transformation! What was once basic and builder-grade now feels like a Parisian escape. Every detail shows her incredible eye for design and talent for creating spaces that wow. Merci, Amy! 🖤🛁

Design:
Management:
Photography 📸:

Will Work for Peking Duck 🥢🦆For my birthday, my family took me to Mr. Jiu’s in Chinatown—aka the place where crispy duck...
08/12/2025

Will Work for Peking Duck 🥢🦆
For my birthday, my family took me to Mr. Jiu’s in Chinatown—aka the place where crispy duck dreams come true. 🥰

Michelin-star chef Brandon Jew somehow makes every bite taste like a party, blending Cantonese tradition with California’s freshest goodies. We laughed, we feasted, we may have debated “sharing” the last slice of duck (spoiler: I won). Add in cocktails, Moongate Lounge upstairs, and a lantern-lit stroll afterward, and it was the perfect San Francisco night. ✨🏮

Come visit me today at my new listing at 2400 Webster  #1 - a total cutie, Pacific heights Jewel Box Open House today fr...
03/23/2025

Come visit me today at my new listing at 2400 Webster #1 - a total cutie, Pacific heights Jewel Box
Open House today from 2-4pm
Asking Price: $1,395,000
2-bedrooms | 2-bathrooms | 1,037 sq. ft. | 1 car parking | Storage | Updated kitchen and bathrooms

A Pacific Heights jewel box, this stunning corner condominium is a rare blend of historic charm and modern elegance. Originally built in 1906, the home radiates timeless sophistication with exquisite period details- graceful box beam and coved ceilings, rich wainscoting, and beautifully crafted buil...

Just Sold in Pacific Heights2119-2121 Pierce Street, San Francisco Sale Price: $4,500,000After over a year of intense se...
02/26/2025

Just Sold in Pacific Heights
2119-2121 Pierce Street, San Francisco
Sale Price: $4,500,000

After over a year of intense searching with my clients for their perfect family home, I got them into see this property early and my strategic efforts paid off! In a competitive market, my clients scored on a very smart buy of a 2-unit building in a prime location, perfect for their family.

Doing what I love every day and achieving success along the way is something I’m truly proud of. Grateful for the journe...
01/29/2025

Doing what I love every day and achieving success along the way is something I’m truly proud of. Grateful for the journey and excited for what’s ahead!

Just Sold! 231 Upper TerraceRepresented the buyerSale Price: $2,800,000• Single Family Residence• Buena Vista Heights• 2...
12/20/2024

Just Sold!
231 Upper Terrace
Represented the buyer
Sale Price: $2,800,000

• Single Family Residence
• Buena Vista Heights
• 2-bedrooms, 2.5-bathrooms
• Year Built: 1911
• 1,906 sq. ft. (approx.)
• Renovated by Ewald & Pew
• Views of iconic skyline & bay
• Guest quarters/entertainment room on lower level
• Lot size: 1,820 sq. ft.

Just Sold! Penthouse at the Clay Jones, the most iconic Art Deco Building in SFRepresented the BuyerSale Price: $7,250,0...
12/19/2024

Just Sold! Penthouse at the Clay Jones, the most iconic Art Deco Building in SF

Represented the Buyer
Sale Price: $7,250,000
1250 Jones #1901

360 degree views | Full floor flat | 4-bedrooms, 4-bathrooms | View lounge | 650 sq. ft. terrace | Elevator | Luxurious updates

11/18/2024

Address

117 Greenwich Street
San Francisco, CA
94111

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