Mon–Fri 8:00AM – 5:30PM

Plumbing, Heating & Cooling in Marin County

Same-day plumbing, heating, and cooling across Marin County — from Eichler radiant slabs in Terra Linda to coastal lines in West Marin.

Licensed & InsuredProfessionals
Quality WorkGuaranteed
Local ExpertsSince 1986
Fast & ReliableService

Marin is a county of original Eichlers, 1920s Mill Valley bungalows, and hillside homes wired into copper-in-slab radiant systems most contractors won't touch. John Owens Services has worked these houses since 1986 — we know why salt air off Tomales Bay eats supply lines, why a Ross Valley crawlspace floods every wet winter, and how to keep a 60-year-old radiant loop running without tearing up the floor. One family-run team handles your plumbing, heating, and AC, usually in a single visit.

Why Homeowners Choose John Owens

  • Founder John Owens has held California plumbing, HVAC, radiant, electrical, and general-contractor licenses (CA #501853) since 1986 — rare range for the mixed systems in Marin homes
  • Genuine Eichler and mid-century specialists: we diagnose and repair original copper-in-slab radiant heat in Terra Linda, Lucas Valley, Marinwood, and Strawberry without ripping out floors
  • a 4.9-star Google rating and happy customers from neighbors in San Rafael, Mill Valley, Novato, San Anselmo, and across the county
  • Same-day service with fully stocked trucks — most repairs are completed in a single visit
  • We know Marin's terrain firsthand: West Marin salt-air corrosion, hillside water-pressure swings, and crawlspaces older bungalows hide in tight spots
  • The John Owens Way — maintain first, repair second, replace only when a system is truly done — so you're not upsold a new unit you don't need

Signs You Need All Services in

  • No hot water, rusty water, or a tank weeping at the base — common in Marin homes still running a 12-to-15-year-old water heater
  • Cold spots or a radiant floor that won't warm up evenly, often a sign of an aging Eichler slab loop or failing boiler
  • Slow or gurgling drains and sewer backups, frequently caused by oak and redwood roots in older clay laterals
  • Low or fluctuating water pressure on hillside properties in Kentfield, Ross, Tiburon, or the San Geronimo Valley
  • Green corrosion, pinhole leaks, or staining on copper lines — accelerated by damp, salt-laden coastal air in West Marin

Frequently Asked Questions

Are you a licensed plumber serving all of Marin County?

Yes — John Owens Services is fully licensed (CA #501853) and insured, and we cover the entire county from Sausalito to Point Reyes Station, including San Rafael, Mill Valley, Novato, and the Ross Valley. Same-day service is available when you call early.

Do you handle HVAC in Marin County, including older radiant and Eichler systems?

We do. Our techs service forced-air furnaces, heat pumps, and AC, and we're one of the few Marin teams that specializes in mid-century and Eichler in-slab radiant heating — repairing the original loops rather than recommending a full tear-out.

Can you provide same-day heating and cooling repair in Marin County?

In most cases, yes. Our trucks are stocked to fix the majority of heating and cooling problems on the first visit, and we prioritize getting you back up and running fast.

Why do Marin homes have so many plumbing problems?

Aging copper, salt air along the coast, mature tree roots in old sewer laterals, and hillside pressure swings all take a toll. We've worked these exact conditions since 1986 and use materials chosen to hold up to them.

Proudly Serving Marin & Sonoma

From the Marin coast to Sonoma wine country, we bring honest plumbing, heating & cooling to homeowners across both counties — based locally since 1986.

Ready to Get Started?

Schedule service with our trusted local team today.

Serving Marin & Sonoma Counties

Good plumbing, heating, and air conditioning systems are vital in every North California home. John Owens Services, Inc. is proud to be the expert plumbing company you can count on