What a Whole-Home Repipe Actually Costs in Altadena and Pasadena
Repipe estimates for SGV homes typically range from $4,500 to $20,000+, and the gap is real. Here's an honest breakdown of what drives 2026 repipe pricing in Altadena, Pasadena, and the surrounding cities.
If you've gotten multiple repipe estimates, you've seen the range. One contractor quotes $5,500, another quotes $14,000, a third comes in at $9,500. The work descriptions sound similar. The materials sound similar. Why is one estimate nearly three times the other?
Repipe pricing has real factors that justify wide variance, but it also has plenty of room for quotes that don't match the actual work being proposed. The breakdown below explains what each factor actually costs and how to read estimates so you can compare them honestly.
Base ranges by home size
For straightforward repipe with no unusual complications, here are honest 2026 ranges in the SGV.
1-bath, 1-2 bedroom home, PEX: $4,500-$6,500. Smaller homes with fewer fixtures and shorter pipe runs come in lower. Typical Janes Village bungalows and smaller Altadena cottages fall in this range.
2-bath, 2-3 bedroom home, PEX: $5,500-$9,000. The most common SGV repipe size. Typical pre-1955 Altadena bungalows and 1950s-1970s ranch homes across Pasadena, Glendale, and Arcadia fall here.
3-bath, 3-4 bedroom home, PEX: $8,000-$14,000. Larger homes with more fixtures and longer pipe runs. Common for mid-century and newer construction.
4+ bath, 4+ bedroom home, PEX: $12,000-$22,000+. Larger custom homes, some Country Club Drive properties, and La Vina-area homes fall here.
Copper instead of PEX adds 50-70% to material and labor cost across all sizes. A typical 2-bath PEX repipe quoted at $7,000 would run roughly $10,500-$12,000 in copper.
What drives the variance within these ranges
Six factors most often push pricing toward the high or low end of the base ranges.
Slab vs crawlspace. Homes with crawlspace access (most pre-1955 Altadena bungalows) are easier to repipe because the plumber can route new pipe through the crawlspace and access existing fixtures from below. Slab-on-grade construction (most 1955-1980 mid-century homes) requires more wall openings to route new pipe through walls and ceilings. Slab repipes typically run 20-40% more than crawlspace repipes of the same home size.
Finished walls and ceilings. Open wall framing (during renovation) means lower repipe cost because the plumber doesn't have to plan around finished surfaces. Repipe in a fully finished home requires cutting wall openings for pipe routing and patching afterward, adding $800-$2,500 to the project. Coordinating repipe with planned renovation is often the most economical approach.
Number of fixtures. The bid is fundamentally about how many sinks, showers, tubs, toilets, hose bibs, washing machine connections, and other endpoints need new supply connections. A 2-bath home with separate his/hers sinks plus a tub and shower in each bathroom has more fixtures than a 3-bath home with single sinks and shower-only configurations.
Pipe routing complexity. Long runs, multiple floors, and routing around HVAC or structural elements all add labor time. Two-story homes typically run 20-30% more than equivalent single-story homes.
Service line replacement. The pipe from the meter to the house (the yard supply line) often needs replacement at the same time as interior pipe. If the existing service line is galvanized, replacing it as part of the repipe avoids having a new interior system fed by an aging exterior line. Service line replacement adds $1,500-$4,500 depending on length and access.
Permit jurisdiction. Altadena (unincorporated) goes through LA County DPW. Pasadena uses its own Pasadena Permit Center. Glendale, Arcadia, and San Marino have their own building departments. Permit fees range from $200-$800 in most cases. Lead times differ.
PEX vs copper: how to think about the choice
Both materials are code-approved in California and both work for residential repipe. The honest tradeoffs:
PEX is faster to install, has fewer joints (which means fewer potential failure points), handles freezing better than copper, costs less, and has a 40-50+ year expected service life. It's the default recommendation for most SGV repipe.
Copper has the longer historical track record, looks more "traditional" if you can see it, and has a 50-60+ year expected service life. It costs more and takes longer to install. In areas with aggressive water chemistry, copper can develop pinhole leaks earlier than expected (we covered this in our copper pinhole leak post), though SGV water is generally compatible with copper.
For most Altadena and Pasadena homes, PEX is the recommendation. We'll install copper if a homeowner prefers it and explain the cost difference clearly.
What's included in a good repipe quote
An honest repipe quote should include:
All new supply pipe (PEX or copper), all new fittings and valves, removal and disposal of old pipe where accessible, water heater connection updates as needed, fixture connection updates at all faucets and toilets, pressure testing of the new system, permit fees, inspection coordination, wall opening and basic patching where required for pipe routing, and 90-day or 1-year workmanship warranty.
What might be excluded but should be disclosed: cosmetic finish work on patched walls (texture matching, paint), tile work where bathroom walls require opening, drywall replacement for openings larger than typical patches, service line replacement (often quoted separately), and water heater replacement if applicable.
When comparing quotes, ask each contractor what's included. Cheap quotes that exclude permits, exclude fixture connections, or exclude basic wall patching can end up more expensive than higher quotes that include everything.
What the project actually looks like
A typical 2-3 bedroom Altadena repipe takes 3-5 working days.
Day 1: setup, water shutdown planning, routing plan finalized, wall openings cut where needed.
Days 2-4: new pipe install. Main supply line in, branches to each fixture, valve replacement, water heater connection. Water service is interrupted during portions of the day; we typically restore service overnight.
Day 5: permit inspection, final connections, pressure test, wall patching at openings, cleanup.
Most homeowners stay in the house during the work. Bathroom and kitchen access is intermittent rather than fully unavailable.
Bottom line on repipe pricing
For most SGV homes, expect $5,500-$14,000 for a complete PEX repipe depending on size and complexity. Copper runs 50-70% higher. Outliers in either direction warrant questions about what's being included or excluded.
The biggest single factor most homeowners can affect: get bids that all describe the same work scope. When every bidder is pricing the same job with the same materials and the same inclusions, the comparison becomes meaningful.
For Altadena and Pasadena repipe work, call (844) 981-1691. We'll come do a site assessment, walk you through what we'd recommend and why, and provide a written quote with line-item inclusions you can compare to other bids.