
Get to know Tony Sum
Founder | Broker Associate
Tony Sum has been with his clients every step of the way since 2006, from the hard work and strategic planning to the celebration of their successful transactions. As co-founder of Upswing Real Estate, he uses his keen attention to detail to manage even the most intricate situations while maintaining a steady focus on the big picture.
Before beginning his real estate career, Tony was an attorney with a practice that encompassed business, construc...
Tony Sum's listings & sales (237)
For Sale (3)
Address | Bed/Bath | Listing price |
---|---|---|
![]() 175 W Saint James St UNIT 506 San Jose, CA 95110
| 2 Bed, 2 Bath | $699,000 |
![]() 539 Quailbrook Ct San Jose, CA 95110
| 2 Bed, 2 Bath | $789,000 |
![]() 38 N Almaden Blvd UNIT 705 San Jose, CA 95110
| 1 Bed, 1 Bath | $725,000 |
Sold (234)
Address | Sold date | Closing price | Represented | Flag Sale |
---|---|---|---|---|
7/31/2025 | $1,320,000 | Seller | ||
7/25/2025 | $1,230,000 | Seller | ||
6/25/2025 | $755,000 | Buyer | ||
6/3/2025 | $802,000 | Seller | ||
5/30/2025 | $1,225,000 | Seller |
Tony Sum's reviews (51)
Write a review- Highly likely to recommend||5.05.0
6/21/2025 - david mezerette
Bought and sold a Condo home in 2025 in Downtown, San jose, CA.Local knowledgeProcess expertiseResponsivenessNegotiation skillsTony Sum of Upswing Real Estate helped us buy and, 10 years later, sell our condo in San Jose. In both cases, Tony shone with his professionalism and attention to details: the buying/selling process was clearly explained, the documents timely produce... - Highly likely to recommend||5.05.0
11/30/2024 - CM Scarboro
Bought a Condo home in 2024 in Downtown, San jose, CA.Local knowledgeProcess expertiseResponsivenessNegotiation skillsWe were very impressed with Tony's knowledge of the downtown San Jose area and of the condos that we were interested in. Tony did a great job getting us all of the information about the HOAs of two properties that we'd identified, and helping us eva... - Highly likely to recommend||5.05.0
3/17/2024 - zannasj9
Sold a Townhouse home in 2024 in Fairgrounds, San jose, CA.Local knowledgeProcess expertiseResponsivenessNegotiation skillsTony Sum of Upswing Real Estate came highly recommended by a friend after he helped her sell two condos. When it was time to sell my own San Jose condo, where I'd lived for 25 years, I didn't even considered interviewing anyone else. I called Tony an... - Highly likely to recommend||5.05.0
9/12/2023 - Henry S.
Bought a Condo home in 2023 in Downtown, San jose, CA.Local knowledgeProcess expertiseResponsivenessNegotiation skillsI chose to work with Tony because I felt that he would be the most capable person to help me find a condo that would meet my needs. Tony delivered on my expectations. He tailored his search to my specific criteria. He gave me insight on the different... - Highly likely to recommend||5.05.0
9/4/2023 - Feng Zhang
Sold a Condo home in 2023 in Downtown, San jose, CA.Local knowledgeProcess expertiseResponsivenessNegotiation skillsTony did outstanding job sold my downtown condo in San Jose very effectively. He is knowledgeable and understand market very well. He has guided us from the marketing strategy and handling my tenants to negotiating the offer.I enjoyed working with hi...