Contact Us

Please feel free to contact us using any of the methods. Our normal business hours are 7:30am – 5pm, Mondays – Fridays.

Hayward office:

  • Address: 31628 Hayman Street, Hayward, CA 94544
  • Tel: 510-487-9628
  • Fax: 510-487-9698

San Francisco office:

  • Address: 1383 Armstrong Ave., San Francisco, CA 94124
  • Tel: 415-822-9628
  • Fax: 415-822-9068

To reach our Estimating Department, please contact:

Stephen Tsoy
Chief Estimator
Tel: 415-822-9628
Cell: 415-335-2662
E-mail: stephent@kwanwo.com

For general inquiries, please contact:

Ada Tang
Office Manager
Tel: 510-487-9628 ext. 146
E-mail: adat@kwanwo.com

Or send us a message online

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