Cost to Bathroom Plumbing Rough-In in Phoenix, AZ (2026)
If you’re budgeting a bathroom plumbing rough-in in Phoenix, most projects run $2,443-$7,816, 2% below the $4,500 national average. What moves that number most is usually one thing: Distance from Main Stack. On its own it can swing the cost by $1,000 - $5,000, so that’s the decision to slow down on before you sweat the smaller stuff.
Easiest place to save: Position the new bathroom as close to the main drain stack as possible - every 10 feet of additional drain run adds $300-$600 in materials and labor
In the Mountain West (where Phoenix sits): Denver and SLC plumber rates have increased with population growth.
$2,443-$7,816 in Phoenix
2% below the national average · 0.98x cost multiplier
In Phoenix, a bathroom plumbing rough-in runs $2,443 to $7,816 on average - about 2% below what homeowners pay nationwide. The Mountain West market's labor costs account for most of the gap, with material pricing and local permitting fees adding to the spread. Use the cost table below to compare budget, mid-range, and premium options side by side.
Cost Breakdown in Phoenix
| Line Item | Low | Mid | High |
|---|---|---|---|
| Cost per fixture | $489 | $1172 | $2443 |
| Materials | $780 | $1,463 | $2,925 |
| Labor | $1,957 | $3,424 | $6,849 |
| Permits | $585 | $780 | $1,463 |
| Total | $3,322-2% vs. national avg | $5,667-2% vs. national avg | $11,237-2% vs. national avg |
Budget
Single bathroom, close to existing stack, supply and drain.
Mid-Range
Full bathroom rough-in, moderate distance from stack, proper venting.
Premium
Remote location, slab penetration or long run, complex venting.
Material Options
Material prices below are national averages; availability in Phoenix may shift costs slightly.
| Material | Cost/Unit | Best For |
|---|---|---|
| PEX Supply Lines | $0.50-$1.50/ft | Most residential supply line applications; the dominant choice in new constructionFlexible, freeze-resistant, fast to install, less expensive than copper |
| Copper Supply Lines | $2-$4/ft | Homes with existing copper systems where matching is requiredLong-lasting, naturally antimicrobial, handles high heat |
| ABS Drain Pipe | $1-$2/ft | New construction and additions in areas where it's code-approvedLightweight, easy to cut and glue, lower cost than cast iron |
| PVC Drain Pipe | $0.80-$1.50/ft | Standard drain and vent applications in most residential projectsWidely code-approved, durable, resistant to chemicals |
| Cast Iron Drain | $3-$8/ft | Matching existing cast iron systems in older homesVery quiet, extremely durable, required in some jurisdictions |
Other Projects in Phoenix
Phoenix Estimate
Typical Range
$2,443-$7,816
vs. National Average
2% below national
Cost Multiplier
0.98x
Cost Per fixture
$489-$2443
This 0.98x estimate prices Phoenix labor from BLS Occupational Employment and Wage Statistics (May 2025) and applies a lighter regional adjustment to materials and permits, which vary less by metro than labor does. Actual bids vary by contractor, project scope, and timing.
See national average costs →