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Plumbing, Heating & Air Conditioning in Larkspur, CA

Trusted plumbing, heating, and air conditioning in Larkspur, CA — same-day service for canyon cottages, creekside homes, and downtown landmarks.

Licensed & InsuredProfessionals
Quality WorkGuaranteed
Local ExpertsSince 1986
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Larkspur is a town of small 1940s Heather Gardens bungalows, century-old Baltimore Park farmhouses, and redwood-shaded homes tucked into Baltimore Canyon — and each one ages differently. Down by Corte Madera Creek and the Greenbrae marshes, king tides and heavy winter rain push the water table up, while older galvanized supply lines and undersized systems show their years everywhere else. John Owens Services has worked these streets since 1986, so we know what a Larkspur house is likely hiding before we open the wall.

Why Larkspur Homeowners Choose John Owens

  • Family-run and California-licensed (CA #501853) since 1986 — nearly four decades on Marin homes, backed by a 4.9-star Google rating and happy customers from neighbors across Larkspur and Greenbrae
  • One crew for plumbing, heating, cooling, water heaters, and drains — no juggling separate contractors when a Baltimore Canyon remodel touches all four
  • We know the local housing stock: galvanized and polybutylene supply lines in Heather Gardens cottages, original cast-iron drains in Baltimore Park, and tight crawlspaces on the canyon hillsides
  • Same-day service for the emergencies that don't wait — a slab leak, a no-heat morning, or a sewer backup when the creek-side water table is high
  • Honest, upfront pricing and straight talk: we'll tell you when a 1940s wall furnace or aging water heater is worth repairing and when replacement actually saves you money
  • Comfortable in Larkspur's historic district and protected homes — careful, clean work that respects original finishes and tight downtown lots

Signs You Need Plumbing in Larkspur

  • Water pressure has dropped or your hot water runs rusty — classic signs of corroded galvanized pipe in pre-1950s Larkspur and Heather Gardens homes
  • Slow or gurgling drains, or sewage backing up during heavy rain — often tree roots in clay lines or a high water table near Corte Madera Creek
  • An old wall or floor furnace that struggles to keep a canyon home warm, cycles on and off, or finally quits on the first cold morning
  • No central air, or a tired AC system that can't handle the few genuinely hot inland afternoons Larkspur now sees each summer
  • A water heater past 10–12 years, leaking at the base, or running out mid-shower for the household

Frequently Asked Questions

Do you offer same-day plumber service in Larkspur?

Yes — for urgent issues like burst pipes, slab leaks, and sewer backups we offer same-day service throughout Larkspur, Greenbrae, and Baltimore Canyon. We're licensed (CA #501853) and have served Marin since 1986.

Can you handle heating repairs in older Larkspur homes?

Absolutely. We routinely service and replace the aging wall furnaces, floor heaters, and undersized systems common in Heather Gardens and Baltimore Park, and we'll advise whether repair or a modern upgrade makes more sense for your home.

Is air conditioning worth installing in Larkspur?

Many older Larkspur homes were built without it, but with warmer inland afternoons more homeowners are adding ductless mini-splits or central AC. We size and install systems that fit canyon homes and historic lots without overspending.

Why do drains back up in homes near Corte Madera Creek?

Low-lying areas near the creek and Greenbrae marsh sit on a high water table, and king tides plus winter rain overload older clay sewer lines and tree-root-prone drains. We camera-inspect, clear, and repair them with same-day response.

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.

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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