Cost to Bathroom Plumbing Rough-In in Boise, ID (2026)
If you’re budgeting a bathroom plumbing rough-in in Boise, most projects run $2,262-$7,238, 10% 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 Boise sits): Denver and SLC plumber rates have increased with population growth.
$2,262-$7,238 in Boise
10% below the national average · 0.90x cost multiplier
Expect to pay $2,262-$7,238 for a bathroom plumbing rough-in in Boise, about 10% below the national benchmark. The Mountain West region's contractor market and material costs account for most of this difference. The detailed breakdown below shows how budget, mid-range, and premium projects compare at Boise prices.
Cost Breakdown in Boise
| Line Item | Low | Mid | High |
|---|---|---|---|
| Cost per fixture | $452 | $1086 | $2262 |
| Materials | $820 | $1,537 | $3,075 |
| Labor | $1,652 | $2,891 | $5,782 |
| Permits | $615 | $820 | $1,537 |
| Total | $3,087-9% vs. national avg | $5,248-10% vs. national avg | $10,394-10% 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 Boise 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 Boise
Boise Estimate
Typical Range
$2,262-$7,238
vs. National Average
10% below national
Cost Multiplier
0.90x
Cost Per fixture
$452-$2262
This 0.90x estimate prices Boise 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 →