24/7 Emergency Plumbing
Available in San Francisco and San Mateo Counties
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Half Moon Bay is one of the most distinctive places to live on the San Mateo County coastside and one of the most demanding environments for residential and commercial plumbing. The combination of salt air, coastal fog, mineral-rich water, and a significant inventory of older Craftsman and mid-century homes along Highway 1 creates plumbing challenges that require a contractor who understands the local conditions. In & Out Plumbing & Construction has been serving Half Moon Bay and the surrounding coastside since 1999.
We are a fully licensed California plumbing contractor (CSLB License # 878184) providing residential and commercial plumbing services throughout Half Moon Bay, from the older homes on Kelly Avenue and the streets off Main Street, to the farms and ranches on the hillsides above Highway 1, to the lodging and restaurant businesses near Pillar Point Harbor. Whatever the job, we bring the same commitment to fast, honest, quality work.
Call us 24/7: 650-589-4855 | CSLB License # 878184
Emergency Plumber in Half Moon Bay — 24 Hours a Day
Plumbing emergencies on the coast do not wait for business hours, and coastal properties present their own risks, salt-air corrosion can weaken pipes that appear fine on the surface until they fail suddenly, and older homes along Highway 1 often have plumbing infrastructure that is decades overdue for attention. In & Out Plumbing & Construction is available 24 hours a day, 7 days a week, 365 days a year for emergency plumbing in Half Moon Bay.
When you call our emergency line, you reach a real person immediately. We dispatch a licensed plumber to your Half Moon Bay property as fast as possible, no voicemail, no waiting until morning. We handle the full spectrum of plumbing emergencies: burst pipes, major leaks, sewage backups, gas line concerns, flooding from failed appliances, and water heater failures. Our service vehicles carry the parts and equipment to resolve most emergency situations in a single visit.
Emergency line: 650-589-4855 — available right now.
Water Heater Repair in Half Moon Bay, CA
The mineral content in Half Moon Bay's water supply, higher in calcium and magnesium than many inland areas of San Mateo County, accelerates sediment buildup inside water heater tanks and creates scaling inside tankless heat exchangers. This means water heaters in Half Moon Bay homes typically need more frequent maintenance and may reach the end of their useful life sooner than units in softer-water areas. In & Out Plumbing & Construction provides water heater repair, replacement, and installation throughout Half Moon Bay for both tank and tankless systems.
We service all major brands, Navien, Rinnai, Noritz, Rheem, Bradford White and handle both residential and commercial water heater systems. Common issues we resolve in Half Moon Bay include sediment rumbling, inconsistent hot water temperature, rusty or discolored water from the hot tap, failed heating elements or thermocouples, and leaking pressure relief valves. If your water heater is more than ten years old or needs repeated repairs, we will give you an honest repair-versus-replace assessment before any work begins.
Same-day emergency water heater service is available throughout Half Moon Bay. Call 650-589-4855.
Drain Cleaning in Half Moon Bay, CA
Slow drains and recurring clogs are a fact of life in many Half Moon Bay homes, particularly in the older properties along the residential streets west of Highway 1 where original cast iron and clay drain systems are still in service. These aging pipes accumulate mineral scale, grease, and organic debris faster than modern PVC systems, and store-bought drain solutions provide only a temporary fix.
In & Out Plumbing & Construction provides professional drain cleaning throughout Half Moon Bay using industrial-grade drain snaking and hydro jetting equipment. Hydro jetting, which uses high-pressure water to scour pipe walls clean, is especially effective on the scaled and root-intruded drains common in older Half Moon Bay properties. We also offer sewer camera inspection, which lets us view the inside of your drain or sewer line and identify the exact cause of a blockage before recommending a repair approach.
We clean kitchen drains, bathroom drains, floor drains, laundry drains, and main sewer lines for residential and commercial properties across Half Moon Bay and the surrounding coastside. Emergency drain cleaning is available 24/7, call 650-589-4855.
Sewer Line Services in Half Moon Bay, CA
Sewer line problems in Half Moon Bay often start underground and are invisible until they become serious. The mature trees throughout Half Moon Bay's residential neighborhoods, particularly along the streets near downtown, are a common source of root intrusion into clay sewer laterals. On hillside lots above Highway 1, soil movement and shifting can cause joint separation in older sewer lines over time.
In & Out Plumbing & Construction provides sewer camera inspection, sewer line cleaning, sewer line repair, and trenchless sewer line replacement throughout Half Moon Bay. Trenchless methods are particularly valuable on coast side properties with established landscaping or limited access; we can repair or replace a damaged sewer line through small access points without excavating your yard. We diagnose before we recommend: every sewer engagement starts with a camera inspection to confirm the problem and the right solution.
For sewer concerns or to schedule an inspection, call 650-589-4855.
Commercial Plumber in Half Moon Bay, CA
Half Moon Bay's commercial landscape is anchored by the Main Street corridor, restaurants, boutiques, lodging properties, and farm-adjacent businesses that draw visitors year-round. Many of these commercial buildings are older structures with plumbing infrastructure that demands regular attention. In & Out Plumbing & Construction provides commercial plumbing services throughout Half Moon Bay, including the Main Street business district, Kelly Avenue, Cabrillo Highway commercial properties, and Pillar Point Harbor.
Our commercial services include commercial water heater repair and replacement, grease trap maintenance for restaurants, drain cleaning for commercial kitchens and restrooms, gas line services, repiping, and emergency commercial response. We carry full commercial contractor insurance and licensing, and we understand that a plumbing failure during tourist season is a business-critical event. We respond to commercial calls with the same urgency as residential emergencies.
For commercial plumbing in Half Moon Bay call 650-589-4855, available 24/7.
Our Plumbing Services in Half Moon Bay, CA
In & Out Plumbing & Construction provides a full range of residential and commercial plumbing services throughout Half Moon Bay and the San Mateo County coast side:
- Emergency plumbing — 24/7 rapid response
- Water heater repair and replacement (tank and tankless)
- Drain cleaning and hydro jetting
- Sewer line inspection, repair, and trenchless replacement
- Commercial plumbing services
- Gas line repair and installation
- Leak detection and pipe repair
- Repiping — copper and PEX
- Bathroom and kitchen remodeling
- Slab leak repair
- Sump pumps and water treatment
Serving Half Moon Bay and the Surrounding Coastside
In & Out Plumbing & Construction serves all of Half Moon Bay and the neighboring coast side communities. If you are located nearby, we serve you too:
Frequently Asked Questions — Plumber in Half Moon Bay, CA
Do you offer 24/7 emergency plumbing in Half Moon Bay?
Yes. In & Out Plumbing & Construction provides true 24/7 emergency plumbing service in Half Moon Bay, CA. When you call our emergency line at 650-589-4855, you reach a live member of our team, not a voicemail or answering service. We dispatch a licensed plumber to your Half Moon Bay property as quickly as possible, day or night, including weekends and holidays. Plumbing emergencies on the coast side cannot wait, and neither do we.
Why do Half Moon Bay homes have more plumbing problems than inland properties?
Half Moon Bay properties face a combination of challenges that inland homes typically do not. Salt air and coastal humidity accelerate corrosion on exposed metal pipes and fittings, particularly in older Craftsman and ranch-style homes along Highway 1 and the older residential streets near Main Street. The area's water supply also carries higher mineral content, calcium and magnesium, that creates sediment buildup in water heaters and scale in pipes faster than in many other parts of San Mateo County. Many of the homes in Half Moon Bay were built in the mid-20th century and still have original iron or galvanized pipe systems that are due for inspection or replacement.
How long does it take for a plumber to reach Half Moon Bay?
Response time to Half Moon Bay depends on traffic and current call volume. Highway 92 and Highway 1 are the primary access routes from our South San Francisco base, and travel times can vary, especially during peak commute hours or foggy conditions. For emergency calls, we dispatch the closest available technician and keep you informed of the estimated arrival. We recommend calling our emergency line directly at 650-589-4855 for the fastest response rather than submitting a web form, which may not be monitored around the clock.
Do you service commercial properties on Half Moon Bay's Main Street?
Yes. We provide commercial plumbing services to restaurants, retail shops, lodging properties, and other businesses throughout Half Moon Bay, including the Main Street corridor, Kelly Avenue, and the Pillar Point Harbor area. Commercial plumbing in Half Moon Bay often involves older building infrastructure and systems that see heavy seasonal use during the tourist season. We are available for scheduled commercial maintenance as well as emergency commercial response, call 650-589-4855.
Is a permit required for plumbing work in Half Moon Bay?
Yes. The City of Half Moon Bay and San Mateo County require permits for most plumbing installations and replacements, including water heater replacement, sewer line work, and repiping. In & Out Plumbing & Construction handles the permit application process on your behalf for all applicable work in Half Moon Bay. We ensure the job is inspected and code-compliant before we close the project, you do not need to manage the permitting yourself. Our CSLB License # 878184 covers all permitted plumbing work throughout San Mateo County.
Can you repair a tankless water heater in Half Moon Bay?
Yes. We repair, service, and install both tank and tankless water heaters throughout Half Moon Bay. Tankless units are increasingly popular on the coast side because they provide on-demand hot water without the standby energy loss of a tank heater — a practical advantage in homes where energy efficiency and space are both priorities. We service all major brands including Navien, Rinnai, Noritz, and Rheem. If your tankless unit is displaying an error code, producing inconsistent temperatures, or has shut down entirely, call us at 650-589-4855 for a same-day diagnostic.
Contact In & Out Plumbing & Construction — Half Moon Bay, CA
Call In & Out Plumbing & Construction at 650-589-4855, available 24 hours a day, 7 days a week. We serve Half Moon Bay, El Granada, Miramar, Moss Beach, Montara, Pacifica, and the full San Mateo County coast side.
In & Out Plumbing & Construction | CSLB License # 878184 | 650-589-4855 | Serving San Mateo County since 1999