Cost to Half Bath Addition in Salt Lake City, UT (2026)
If you’re budgeting a half bath addition in Salt Lake City, most projects run $4,966-$14,899, 1% below the $8,500 national average. What moves that number most is usually one thing: Proximity to Existing Plumbing. On its own it can swing the cost by $1,500 - $6,000, so that’s the decision to slow down on before you sweat the smaller stuff.
Easiest place to save: Locate the new half bath on the opposite side of a kitchen or main bathroom wall - shared plumbing walls cut rough-in costs by $1,500-$3,000
In the Mountain West (where Salt Lake City sits): Rapid growth cities like Denver and Boise have driven up contractor rates.
$4,966-$14,899 in Salt Lake City
1% below the national average · 0.99x cost multiplier
Homeowners in Salt Lake City typically spend $4,966-$14,899 on a half bath addition, about 1% 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 room | $2980 | $8443 | $14899 |
| Materials | $1,872 | $3,640 | $7,280 |
| Labor | $2,348 | $3,757 | $7,044 |
| Permits | $624 | $832 | $1,248 |
| Total | $4,844-1% vs. national avg | $8,541-1% vs. national avg | $16,612-1% vs. national avg |
Budget
Converting a closet or unused corner near existing plumbing. Stock toilet, pedestal sink, basic tile floor.
Mid-Range
New framed walls, proper plumbing rough-in, vanity with storage, porcelain tile, ventilation fan.
Premium
Fully built-out addition with custom vanity, designer tile, vessel sink, heated floor, designer lighting.
Material Options
Material prices below are national averages; availability in Salt Lake City may shift costs slightly.
| Material | Cost/Unit | Best For |
|---|---|---|
| Pedestal Sink | $150-$600 installed | Small half baths under 25 sq ft, traditional or vintage aestheticsSpace-saving, classic look, lower cost, easy to install |
| Compact Vanity (24-30 inch) | $400-$1,500 installed | Most half baths - the storage is worth itStorage for toiletries and cleaning supplies, cleaner look, many styles |
| Wall-Mounted Floating Vanity | $600-$2,500 installed | Modern or contemporary home styles, tight spacesMakes small space feel larger, modern aesthetic, easy floor cleaning |
| Patterned Cement or Encaustic Tile Floor | $8-$20/sq ft materials | Making a design statement in a small powder roomHigh visual impact in a small space, unique, trending |
| Basic Elongated Toilet | $300-$700 installed | Standard half baths with adequate floor spaceComfortable, widely available, reliable |
Other Projects in Salt Lake City
Salt Lake City Estimate
Typical Range
$4,966-$14,899
vs. National Average
1% below national
Cost Multiplier
0.99x
Cost Per room
$2980-$14899
This 0.99x 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 →