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Repipe Plumbing in Southern California
Complete repiping for houses, apartments, condominiums, townhomes, HOAs, hotels, high-rise buildings and commercial properties. SoCal Repipes installs and replaces PEX A, PEX B, Copper Type L, Copper Type K, ABS, PVC, cast iron, black iron gas pipe, TracPipe CSST and qualifying Viega ProPress systems.
One Repiping Company for Complete Plumbing Systems
A repipe is not limited to replacing hot and cold water lines inside a house. Different properties may need a whole-house water repipe, apartment riser replacement, commercial copper piping, drain repipe, whole-building redrain, sewer replacement, gas line repipe or a combination of systems. SoCal Repipes evaluates the existing pipe material, failure history, water pressure, building layout, access, occupancy and local requirements before preparing the scope.
Hot and Cold Water Repipe Plumbing
Water repiping replaces aging or failing domestic water distribution pipes with a new code-compliant system. The layout can include cold-water mains, hot-water piping, recirculation lines, risers, branches, fixture connections, shutoff valves and approved transitions to existing equipment.
Whole House Repipe
Replace deteriorated hot and cold water lines serving kitchens, bathrooms, laundry rooms, hose connections, water heaters and other plumbing fixtures in single-family homes.
Apartment Building Repipe
Coordinate unit access, isolation valves, vertical risers, horizontal mains, individual branches, water shutdowns, inspections and restoration for occupied or vacant multifamily buildings.
Commercial Water Repipe
Replace domestic water piping in offices, retail buildings, restaurants, warehouses, medical suites and other commercial facilities with planning around operating hours and tenant needs.
Water Main Replacement
Replace qualifying building water service piping between the meter area and structure using the material and installation method approved for the site conditions.
Domestic Hot Water Recirculation
Install or replace dedicated recirculation piping, supports, insulation, check valves, balancing components and pumps when included in the project design.
Risers, Mains and Branch Lines
Design the repipe around pipe sizing, developed length, fixture demand, available pressure, elevation and the existing building distribution layout.
PEX A Repipe Plumbing
PEX A is the primary flexible water-repiping system requested by many Southern California homeowners and property managers. Its flexibility allows longer routing with fewer directional fittings, which can be useful in attics, walls, ceilings, crawl spaces and multifamily pipe chases.
Uponor PEX A and Cold Expansion
Uponor AquaPEX and ProPEX use an ASTM F1960 cold-expansion connection method. The pipe and expansion ring are expanded before the fitting is inserted, and the material returns toward its original shape around the fitting. Approved components must be installed as a complete listed system.
Where PEX A May Be Used
Qualifying applications can include whole-house repipes, apartment repipes, condominium repipes, hot and cold distribution, recirculation piping and commercial domestic-water systems. Final material selection depends on plans, specifications, local approval and site conditions.
PEX A Repipe Benefits
- Flexible routing around framing and obstructions
- Fewer directional fittings on many pipe runs
- Corrosion-resistant plastic water piping
- Color-coded hot and cold water identification
- Expansion-style connection systems available
PEX A Installation Details Matter
Proper sizing, support, bend radius, expansion allowances, UV protection, firestopping, insulation, nail protection and manufacturer-approved fittings are essential. The name of the material alone does not guarantee a successful repipe.
PEX B Repipe Plumbing
PEX B is another cross-linked polyethylene water-piping option used in residential and commercial plumbing. It is commonly joined with approved insert fittings and crimp, clamp or other listed connection systems. SoCal Repipes can evaluate PEX B when it is specified, approved and appropriate for the project.
PEX B Whole House Repipe
A PEX B system can replace aging galvanized, copper or other failing water lines. Pipe sizing and fitting pressure loss must be considered when planning each branch.
PEX B Multifamily Repipe
PEX B may be considered for apartment, condominium and townhome projects based on the engineered or approved design, accessibility and selected manufacturer system.
PEX A vs PEX B
PEX A and PEX B describe manufacturing methods, not a universal measure of workmanship. PEX A is generally more flexible. PEX B is commonly paired with insert-style fittings. The complete approved system and installation quality matter most.
Copper Type L and Copper Type K Repiping
Copper remains a widely recognized plumbing material for residential, multifamily and commercial work. Copper Type L and Type K have different wall thicknesses and should be selected according to the application, plans, specifications and local plumbing requirements.
Copper Type L Repipe
Type L copper is commonly selected for interior hot and cold water distribution and exposed piping. A complete copper repipe includes correctly sized tubing, approved fittings, supports, isolation, protection and testing.
Copper Type K Repipe
Type K has a thicker wall than Type L in the same nominal size. It may be specified for qualifying underground water-service work or other applications requiring Type K based on design and code.
Commercial Copper Repiping
Copper can serve larger mains, risers, mechanical rooms and exposed commercial piping where rigidity, fire performance, material specifications or facility standards make it the preferred choice.
Viega ProPress Copper Repiping
Viega ProPress is a press-connection system for approved copper and stainless-steel applications. ProPress connections use system-matched fittings, jaws, rings and press tools instead of conventional soldering. This can be useful for qualifying residential, commercial and multifamily repipes, including locations where controlling open-flame work or completing dependable connections efficiently is important.
ProPress is a joining method, not a pipe type. A Copper Type L or Type K system may use approved press fittings when the application, fitting, sealing element, pipe preparation and manufacturer instructions allow it. Gas piping requires the fitting system specifically approved for fuel-gas service and must not be treated as ordinary water-system ProPress.
Drain Repipe and Whole-Building Redrain
Drain repiping replaces deteriorated waste and vent piping that is cracked, corroded, improperly sloped, repeatedly clogged or leaking below floors and inside walls. The correct material depends on the building, installation location, approved plans and local requirements.
ABS Drain Repipe
ABS is commonly used for drainage, waste and vent systems in qualifying Southern California residential and multifamily projects. A redrain can include fixture branches, vertical stacks, horizontal mains, cleanouts and vent connections.
PVC Drain Repipe
PVC DWV can be used where approved for the application. Correct fittings, solvent-weld preparation, slope, support, cleanout access, transitions and fire-rated penetrations are essential.
Cast Iron Drain Replacement
Old cast iron can corrode, scale internally, crack, separate or leak at joints. Replacement may involve selected sections, stacks, branches, underground piping or a complete building redrain.
Whole House Drain Repipe
Replace failing kitchen, bathroom and laundry drain lines, vent piping, closet bends, traps, branches and the building drain where included in the approved scope.
Apartment Drain and Stack Repipe
Multifamily projects may require vertical stack replacement, unit branch work, ceiling access, firestopping, temporary shutdown schedules and coordination with tenants and management.
Commercial Drain Repiping
Restaurants, hotels, offices, retail spaces and other facilities may need grease-waste, sanitary drainage, vent, condensate or building-sewer work based on the specific plumbing system.
Gas Repipe Plumbing
Gas repiping replaces or reroutes damaged, undersized, leaking or obsolete fuel-gas piping. Every gas system must be sized for connected appliance demand, developed length, available pressure and allowable pressure loss, then tested and inspected as required.
Black Iron Gas Repipe
Schedule 40 steel pipe, commonly called black iron gas pipe, is used for many interior and exterior fuel-gas systems. Threaded joints, supports, corrosion protection and appliance connections must meet the approved design.
TracPipe CSST Gas Repiping
TracPipe is corrugated stainless-steel tubing designed for qualifying natural-gas and propane systems in residential, multifamily, commercial and industrial buildings. Installation must follow the listed system requirements, including sizing, bonding and protection.
Gas Main, Branch and Appliance Lines
Gas repiping can serve water heaters, furnaces, ranges, dryers, fireplaces, boilers, rooftop equipment, pool heaters and other approved appliances after the connected load is calculated.
Apartment and HOA Gas Repipe
Shared gas systems require careful meter identification, riser planning, tenant coordination, appliance reconnection, pressure testing and documentation.
Commercial Gas Line Replacement
Commercial kitchens, laundries, boilers and mechanical equipment may require larger gas mains, regulators or pressure designs prepared for the facility load and operating schedule.
Suspected Gas Leak Safety
If you smell gas or hear hissing, leave the area immediately. Do not use flames, phones or electrical switches inside. Call 911 or the gas utility emergency line from a safe location.
Repipe Materials and Connection Systems
The best repipe specification is based on the system being replaced, property type, pipe sizes, access, pressure, temperature, occupancy, fire assemblies, project budget and local approval.
| Material or system | Common repipe use | Important planning point |
|---|---|---|
| PEX A | Hot and cold water distribution, recirculation and qualifying water-service applications | Flexible routing and listed expansion-style systems such as ASTM F1960 |
| PEX B | Residential, multifamily and commercial domestic-water distribution where approved | Commonly uses insert fittings with crimp, clamp or other listed connections |
| Copper Type L | Interior water distribution, risers, mains and exposed piping | Proper sizing, supports, protection and joining method are required |
| Copper Type K | Qualifying water-service, underground or specified heavy-wall applications | Thicker wall than Type L in the same nominal size |
| Viega ProPress | Approved copper or stainless press connections | Use correct system components, sealing element and press tooling for the application |
| ABS DWV | Drain, waste and vent replacement where approved | Correct slope, support, cleanouts and transitions determine performance |
| PVC DWV | Drain, waste and vent replacement where approved | Material and use must comply with the local jurisdiction and project conditions |
| Cast Iron | Existing drain stacks, mains and branches requiring repair or replacement | Replacement scope depends on corrosion, cracking, access, sound and fire requirements |
| Black Iron Steel | Natural-gas and propane mains and branches | Size for total connected load and protect piping based on exposure |
| TracPipe CSST | Qualifying flexible fuel-gas distribution | Follow manufacturer requirements for sizing, bonding, routing and mechanical protection |
Repiping for Every Type of Property
Every property requires a different access, shutdown and inspection plan. SoCal Repipes prepares scopes for single structures, multi-unit communities and complex occupied facilities.
House and Residential Repipe
Single-family houses, custom homes, tract homes, duplexes, triplexes, fourplexes, mobile homes where applicable, manufactured housing and accessory dwelling units.
Apartment Building Repipe
Small apartment properties, garden apartments, podium buildings, mixed-use apartments, student housing, senior housing and large multifamily communities.
Condo, Townhome and HOA Repipe
Individual condominiums, attached townhomes, common-area piping, shared risers, stacked units and association-wide repipe projects requiring board and resident coordination.
Hotel and Hospitality Repipe
Hotels, motels, resorts, extended-stay properties and hospitality buildings with guest-room risers, domestic hot water, recirculation, drain stacks and scheduled room access.
High-Rise Building Repipe
High-rise apartments, condominiums, hotels and offices with pressure zones, booster systems, vertical risers, mechanical rooms and phased floor-by-floor work.
Commercial Building Repipe
Office buildings, retail centers, shopping centers, restaurants, warehouses, industrial facilities, medical offices, clinics, churches and mixed-use properties.
Institutional and Care Facilities
Schools, daycare facilities, assisted-living communities, nursing facilities, nonprofit buildings and other occupied properties requiring controlled access and scheduling.
Property Management Portfolios
Repiping plans for owners and managers responsible for multiple rental homes, apartment buildings, associations or commercial properties across Southern California.
New Construction and Remodel Piping
Qualifying piping scopes for additions, ADUs, tenant improvements, major renovations, bathroom remodels, kitchen remodels and plumbing-system upgrades.
Signs a Property May Need Repiping
Repeated Pipe Leaks
Multiple pinhole leaks or failures in different locations can indicate that the remaining system is approaching the same condition.
Low or Uneven Water Pressure
Corrosion, mineral buildup, undersized piping, pressure-regulator problems or active leaks can reduce flow throughout a building.
Rusty or Discolored Water
Corroded galvanized or steel water piping can release discoloration and restrict flow as the internal diameter closes.
Recurring Drain Backups
Scaled cast iron, poor slope, separated fittings, roots, cracks or collapsed drains may require more than repeated cleaning.
High Water or Gas Bills
Hidden leaks can waste water or gas. Leak detection and system testing should identify the affected piping before a repipe is recommended.
Major Renovation or Building Upgrade
When walls and ceilings are already accessible, replacing older piping can reduce future demolition and coordinate plumbing with the larger construction project.
Our Repipe Plumbing Process
Property Evaluation
Review the existing pipe materials, leaks, pressure, fixtures, equipment, access and goals for the project.
Repipe Scope and Routing
Define the systems, materials, pipe sizes, routing, shutoff schedule, access locations and restoration responsibilities.
Installation and Inspection
Install, support, protect, label and test the new piping, with permit and inspection coordination when required.
Testing and Completion
Flush or purge applicable systems, confirm operation, complete approved connections and clean the work areas.
Repipe Plumbing Throughout Southern California
SoCal Repipes serves residential, multifamily and commercial repipe projects across Los Angeles, Orange, Riverside, San Bernardino, San Diego and Ventura Counties. Availability for a specific project depends on location, property size and scope.
Los Angeles County Repipe Plumbing
Los Angeles, Long Beach, Pasadena, Glendale, Burbank, Santa Clarita, Pomona, Torrance, Downey, Whittier, Norwalk, Cerritos, Lakewood, Carson, Inglewood, Culver City, Beverly Hills, West Hollywood, Arcadia, Monrovia, West Covina, Covina, Claremont, La Verne, San Dimas, Diamond Bar, Walnut, Hacienda Heights and surrounding communities.
Orange County Repipe Plumbing
Anaheim, Santa Ana, Irvine, Huntington Beach, Garden Grove, Orange, Fullerton, Costa Mesa, Mission Viejo, Westminster, Newport Beach, Buena Park, Lake Forest, Tustin, Yorba Linda, San Clemente, Laguna Niguel, Fountain Valley, Placentia, Brea, La Habra, Cypress, Los Alamitos, Seal Beach, Rancho Santa Margarita, Ladera Ranch and surrounding communities.
Riverside County Repipe Plumbing
Riverside, Corona, Moreno Valley, Temecula, Murrieta, Menifee, Hemet, Perris, Eastvale, Norco, Lake Elsinore, Wildomar, Beaumont, Banning, Palm Springs, Palm Desert, Cathedral City, Rancho Mirage, Indio, La Quinta, Coachella and surrounding communities.
San Bernardino County Repipe Plumbing
San Bernardino, Ontario, Rancho Cucamonga, Fontana, Chino, Chino Hills, Upland, Redlands, Rialto, Colton, Montclair, Highland, Loma Linda, Yucaipa, Grand Terrace, Victorville, Hesperia, Apple Valley and surrounding communities.
San Diego County Repipe Plumbing
San Diego, Chula Vista, Oceanside, Escondido, Carlsbad, El Cajon, Vista, San Marcos, Encinitas, La Mesa, National City, Poway, Santee, Coronado, Lemon Grove, Imperial Beach, Solana Beach and surrounding communities.
Ventura County Repipe Plumbing
Ventura, Oxnard, Thousand Oaks, Simi Valley, Camarillo, Moorpark, Santa Paula, Port Hueneme, Fillmore, Ojai, Westlake Village and surrounding communities.
A city name on this page describes the general service region and does not replace confirmation of scheduling, permit jurisdiction or project eligibility. Contact SoCal Repipes with the property address and scope.
Related SoCal Repipes Services
Repipe Plumbing Questions
What is repipe plumbing?
Repipe plumbing is the planned replacement of deteriorated, leaking, undersized or outdated water, drain, sewer or gas piping with a new piping system selected for the property and application.
Is PEX A or PEX B better for a whole house repipe?
PEX A is highly flexible and is commonly installed with cold-expansion fittings. PEX B is commonly installed with insert fittings and crimp or clamp connections. The right option depends on the listed system, project design, installer, local approval and property requirements.
What is the difference between Copper Type L and Copper Type K?
Type K copper has a thicker wall than Type L in the same nominal size. Type L is commonly used for interior water distribution. Type K may be selected for qualifying water-service or underground applications based on plans and code requirements.
Can an occupied apartment building be repiped?
Many apartment and condominium repipes can be completed in planned phases with advance notices, controlled water shutdowns, unit-by-unit access, inspections and coordinated restoration. The exact plan depends on the building.
Can a high-rise building use PEX?
PEX may be used in qualifying high-rise domestic-water systems when the approved design, pressure ratings, fire assemblies, riser strategy, local code and manufacturer requirements permit it. Larger or exposed mains may use other specified materials.
Does Viega ProPress replace copper pipe?
No. ProPress is a press-connection system used with approved copper or stainless-steel pipe. It changes how qualifying fittings are joined, not the pipe material itself.
Can ABS, PVC and cast iron be mixed in a drain repipe?
Approved transition couplings and installation methods may connect different drain materials. The allowed material depends on the location, building type, fire and sound requirements and local jurisdiction.
How is a gas repipe sized?
Gas piping is sized using the connected appliance loads, developed length, system pressure and allowable pressure loss. Pipe size should not be selected only by matching the old pipe.
How much does repipe plumbing cost?
Cost depends on pipe material, number of fixtures or units, pipe sizes, stories, access, occupied conditions, permits, firestopping, restoration, equipment connections and whether water, drain, sewer or gas systems are included.
Request a Repipe Plumbing Evaluation
Tell SoCal Repipes the property address, building type, number of units or fixtures, existing pipe material and the plumbing problems you are experiencing. We provide repiping evaluations for homes, apartment buildings, condominiums, HOAs, hotels, high rises and commercial properties throughout our Southern California service area.
