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Golden Gate Bridge

From $300,000 to $30 million,

every client  receives concierge-level, luxury treatment.

Listings & Recent Sales

Sold

1310 Minnesota Street No. 106

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2303 Minnesota Avenue SE

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2351 Hunter Place SE

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2404 10th Street NE

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1704 D Street NE

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1136 46th Street SE

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2404 10th Street NE

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403 E Wayne Avenue

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5820 Broad Branch Road NW

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4837 17th Street

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64 W Street NW No. 1

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817 46th Street NE

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65 Noe

Condo

Duboce Triangle

$2,190,000

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437 New York Avenue NW No. 1110

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931 14th Street

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2145 California Street NW #305

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1730 Broderick Street No. 2

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23 Todd Place NE #2

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2303 Minnesota Avenue SE

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1136 46th Street SE

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2720 Wisconsin Avenue NW No. 703

About
JamesKastner-20250320-004-warm.jpg

Since 2002...

...my name has become synonymous with marketing innovation and strategic thinking. My career took off in San Francisco, first at Zephyr on 17th Street and later Paragon Real Estate Group, where I was a key player on a top-performing team. I made a splash by creating the city's first property website using basic HTML in 2002, setting the stage for a series of industry firsts, including custom CMAs and professionally printed marketing collateral such as value point signs and multi-page brochures. I have continued to lead the way with high-quality marketing materials, consistently setting a new bar for the industry.

"James' mind works at another level from the rest of us humans."

Shelly S.

Sotheby’s is more than
just our name.

Over the last two centuries, Sotheby’s Auction House has built an iconic brand with unparalleled prestige.

Today, Sotheby’s International Realty builds on its legacy with the auction house by offering the same elevated standards and exemplary service.

We harness the global power of the Sotheby’s name and its proprietary database of 1 million clients to create unique opportunities and to introduce your property to the most qualified buyers around the world.

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PHONE

EMAIL

‪(415) 494-7236‬

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The Gregg Lynn Team

Sotheby's International Realty

117 Greenwich Street

San Francisco, CA 94111

DRE 01369951

GET IN TOUCH

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© 2025 James Kastner & Co., LLC & Sotheby’s International Realty. All Rights Reserved. Sotheby’s International Realty® is a registered trademark and used with permission. This website is not the official website of Sotheby’s International Realty. Sotheby’s International Realty does not make any representation or warranty regarding any information, including without limitation its accuracy or completeness, contained on this website. Real estate agents affiliated with Sotheby’s International Realty, Inc. and some independently owned offices are independent contractor sales associates and are not employees of Sotheby’s International Realty. Equal Housing Opportunity.   Privacy Policy

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