Repipes for apartments, condos and HOAs
Multi-Family Repiping in San Jose, CA
Repeated leaks, rusty water and low pressure on upper floors are signs a building's supply piping has reached the end of its life. We plan and phase repipes in occupied buildings, so residents keep water each night and the project stays on schedule.
- 24/7 dispatchEmergency line for every property
- Plumbing + HVACCSLB License #1101278 (C-36, C-20, A)
- 1-year labor warrantyLicensed, bonded and insured since 1986
- Google 4.9130+ reviews
Schedule a Call
Pick a time to talk with our commercial team about your properties.
Who We Work With
Property managers
Residential, commercial and industrial portfolios.
HOAs and condo associations
Shared systems and common areas.
Restaurants, retail and offices
Work scheduled around business hours.
Schools and public agencies
Prevailing wage and insurance requirements met.
Multi-Family Repiping Services
Planned around residents, owners and the board.
Whole-building repipes
Mains, risers and unit branch lines replaced with PEX or copper, phased by building, stack or floor.
Unit and stack repipes
Targeted repipes where only certain stacks or buildings are failing.
Riser and main replacement
Corroded risers and mains replaced, with new isolation valves for each riser or branch.
Hot water recirculation
Recirculation loops and pumps so upper floors and far units get hot water quickly.
New shutoffs everywhere
Unit and fixture shutoffs installed so future repairs affect one unit, not a building.
Access and patching
Small, planned openings patched and ready for paint; we coordinate any finish work.
How We Run a Repipe in an Occupied Building
A project manager
One person coordinates the schedule, notices, inspections and updates for you and the board.
Water back every night
Units are switched over in planned daytime windows, with water restored at the end of most days.
Phasing that fits the building
By building, stack or floor, to limit disruption and spread cost if needed.
Permits and inspections
Pulled and scheduled by us, with documentation for owners and lenders.
Multi-Family Repipe Process
Survey
Inspection of mains, risers, units and access, with pressure and condition notes.
Proposal
Scope, materials, phasing and a custom quote for owners or the board.
Notices and permits
Permits pulled; resident notices issued for each phase.
Repipe by phase
Work completed phase by phase, tested and inspected.
Patch and close out
Openings patched, final inspection, and as-built notes for your records.
Related Projects
Repipe with a recirculation system
A complete repipe and a new hot water recirculation system, with a project manager assigned and permits and inspections handled; the customer noted the crew kept the site clean.
Underground hot water leak, 8 units
A major underground hot water leak affected eight units. Our plumber isolated it by installing ball valves on the manifold, so residents kept water while the repair was planned.
Pricing and Service Agreements
Clear pricing
Service and repair work is priced at a flat rate or on an hourly basis. Larger projects, such as repipes, sewer replacement and equipment installations, are custom quoted.
Service agreements
Flexible service agreements and payment terms for property managers and associations, and scheduled maintenance for plumbing and HVAC. Maintenance plans.
24/7 emergency response
Call (408) 978-3093 any time for leaks, backups and no-heat or no-cooling calls. Emergency work is priced separately.
We hired CPI for a complete house repipe and an addition of a water recirculation system. They did an excellent job. The workers were friendly, they cleaned up after themselves, they didn’t hesitate to ask if they had any questions and we were assigned a project manager to ensure that the job went smoothly. They handled permits and inspections very well. Everything went smoothly. They were definitely worth the money. I wish all of our home improvement jobs had gone this well. I definitely recommend them.
Tanja F.Yelp review
Today we had a major underground hot water leak that affected 8 units. Daniel came out and used his experience to find and isolate the issue by installing ball valves on the manifold allowing us to have water. Very happy with the service. Way to go Daniel and way to go CPI!!!!!!
Larissa D.Google review
I have called on CPI multiple times. The first time was a critical emergency to replace hot & cold lines to an outside building which failed due to age and natural deterioration. The second and third times were minor interior jobs. Today they replaced and upgraded the main line from the street to our home. Next, I plan to have them take care of everything for a new home we’re planning to build. These guys are awesome. They can handle any size job. Prices are fair. I like Matt a lot. Attention to detail and quality is fantastic. Highly recommend.
T. S.Yelp review
Is It Time to Repipe Your Building?
Signs we see in South Bay apartment and condo buildings.
Repeated pinhole leaks
Several leaks in a few years usually means the piping is failing throughout, not in one spot.
Galvanized or polybutylene pipe
Galvanized steel in buildings from before the 1970s and polybutylene from the 1980s and 1990s are both known to fail.
Low pressure upstairs
Corroded piping narrows over time, and upper floors feel it first.
Slow hot water
Long waits for hot water in far units point to failing piping or a missing recirculation loop.
Insurance and lenders
Recurring water damage claims can affect premiums; a repipe documents the fix.
Reserve studies
Phasing lets HOAs fund a repipe over several budget years.
Planning a Multi-Family Repipe
Start with a survey. We look at the mains, risers and a sample of units, check pressure at different floors, and note pipe materials, valve condition and access in walls, ceilings and crawlspaces. That survey drives the scope, phasing and price.
Choose the phasing. Large buildings are usually repiped one stack, floor or building at a time. Phasing keeps the number of residents affected on any day small and lets owners or HOAs spread the cost across budget periods.
Communicate early. Residents need notice of the dates, the water-off windows and what access we need inside their units. We provide notice wording and coordinate access with your staff.
Add what you’ll want later. A repipe is the cheapest moment to add unit shutoff valves, riser isolation valves, a recirculation loop for faster hot water, and pressure regulation where street pressure is high (the plumbing code requires a regulator above 80 psi).
Permits. In San José a repipe needs a plumbing permit, and buildings of more than four units need plans through standard plan review, as does any repipe that affects shear walls, firewalls or structural members. We prepare the submittal and schedule each phase’s inspections.
Close out with records. At the end you get inspection sign-offs and notes on routing and valve locations, useful for future service and for insurers and lenders.
We plan and phase multi-family repipes in Sunnyvale, Mountain View and Campbell as well as San Jose; see the service area page for other cities.
Sources
- City of San José: Repipe and water service permits
- City of San José: Plumbing project permits and key code requirements
Checked October 2026.
Multi-Family Repiping FAQs
Can residents stay during a repipe?
Yes. Water is off only in planned daytime windows and restored at the end of most days.
PEX or copper for a multi-family repipe?
Most of our multi-family repipes use PEX: fewer fittings, faster installation through existing walls, and no pinhole corrosion. Copper is a good choice where it's exposed or preferred by the owner.
How is this work priced?
Service and repair work is priced at a flat rate or on an hourly basis. Larger projects are custom quoted after we see the site. Emergency and after-hours work is priced separately.
Can the repipe be phased over time?
Yes, by building, stack or floor, which helps HOAs and owners spread the cost.
Who handles permits and inspections?
We do, and we schedule the inspections for each phase.
Need a reliable plumbing and HVAC partner for your properties?
- CSLB License #1101278 (opens CSLB in a new tab): C-36 Plumbing · C-20 HVAC · A General Engineering
- 1-year labor warranty on our work
- BBB A+ Accredited Business (opens BBB in a new tab)
- Technicians trained and certified: NASSCO PACP, MACP and LACP · Rheem heat pump · Noritz Level 3 tankless · OSHA safety
- Member of IAPMO, NASSCO, BOMA, IFMA · Se habla español