Add a Plumbing System to Your Building OUR LOCAL PLUMBERS COMPLETE INSTALLATIONS IN SAN FRANCISCO, CA Whether you own a home or run a business, your building needs a reliable plumbing system. The local plumbers at Infinity Plumbing & Rooter Inc. can handle all of the residential or commercial plumbing repairs, installations and upgrades you need in San Francisco, CA. Remodeling or expanding your space? Hire us to keep your plumbing up to code.