Peninsula Builders Exchange Share: Associations & Clubs Peninsula Builders Exchange Visit Website 282 Harbor Blvd. Belmont, CA 94002 (650) 591-4486 (650) 591-8108 (fax) About Map About We help property owners find contractors (referrals) and start projects. We help contractors bid jobs, get reasonable insurance and work efficiently. Many online services. Non-profit. What's Nearby? Distance: 5 10 15 20 25 50 mi.