Cost to Basement Bathroom Addition in Salt Lake City, UT (2026)
If you’re budgeting a basement bathroom addition in Salt Lake City, most projects run $6,737-$19,247, 4% below the $12,500 national average. What moves that number most is usually one thing: Below-Slab vs. Macerating System. On its own it can swing the cost by $2,000 - $8,000, so that’s the decision to slow down on before you sweat the smaller stuff.
Easiest place to save: Start with a half bath (toilet and sink) instead of a full bath - you get 70% of the functionality at 50% of the cost.
$6,737-$19,247 in Salt Lake City
4% below the national average · 0.96x cost multiplier
Homeowners in Salt Lake City typically spend $6,737-$19,247 on a basement bathroom addition, about 4% below the national average. Labor rates and contractor availability in the Mountain West region drive much of the price difference. Permit requirements and material delivery costs also play a role. See the full tier-by-tier breakdown below before requesting bids.
Cost Breakdown in Salt Lake City
| Line Item | Low | Mid | High |
|---|---|---|---|
| Cost per bathroom | $4331 | $12030 | $24059 |
| Materials | $2,912 | $6,240 | $14,560 |
| Labor | $3,497 | $6,556 | $10,490 |
| Permits | $624 | $832 | $1,040 |
| Total | $7,033-5% vs. national avg | $13,628-5% vs. national avg | $27,650-3% vs. national avg |
Budget
Half bath (toilet and sink) added to unfinished basement near existing stack. Basic fixtures, standard tile, and minimal framing.
Mid-Range
Full 3-piece bath (toilet, sink, shower) with below-slab ejector or macerating toilet system, mid-range tile, standard vanity, and proper ventilation.
Premium
Full bath with tile shower, premium fixtures, custom vanity, below-slab plumbing with ejector pump, heated floor, and full exhaust ventilation system.
Material Options
Material prices below are national averages; availability in Salt Lake City may shift costs slightly.
| Material | Cost/Unit | Best For |
|---|---|---|
| Macerating (Upflush) Toilet System | $700-$1,800 unit only | Budget basement bathroom additions, retrofit situationsNo concrete breaking required, lower upfront cost, relocatable |
| Below-Slab Ejector Pump System | $1,500-$4,000 for pump and pit only | Long-term reliable basement bathrooms, high-use situationsCode-compliant everywhere, gravity-fed to pump, quieter |
| Standard Ceramic Tile | $3-$10/sq ft materials only | Budget to mid-range basement bathroomsAffordable, durable, waterproof, wide selection |
| Luxury Vinyl Tile (LVT) | $3-$8/sq ft materials only | Budget installs, DIY-friendly flooringWarm underfoot, waterproof, easy DIY install |
| Porcelain Tile (Floor and Shower) | $6-$25/sq ft materials only | Premium basement bathrooms, shower surroundsMost durable, low water absorption, premium look |
Other Projects in Salt Lake City
Salt Lake City Estimate
Typical Range
$6,737-$19,247
vs. National Average
4% below national
Cost Multiplier
0.96x
Cost Per bathroom
$4331-$24059
This 0.96x estimate prices Salt Lake City 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 →