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Bathroom Addition Cost Calculator — St. George UT

Adding a bathroom in St. George UT, Utah costs slightly below the national average. Type (half vs. full vs. master), proximity to existing plumbing, and finish level are the biggest cost factors.

Low estimate$4,800
Average$17,200
High estimate$52,200

Bathroom square footage

Bathroom square footage 60

Quality Tier

Standard materials, solid craftsmanship

Scope of Work

Labor

Labor portion of total cost 40%

Bathroom Addition Cost in St. George UT: 2026 Guide

Use the calculator above to get a quick estimate. The guide below explains what drives bathroom addition costs in St. George UT and what to expect from contractors in St. George UT.

Typical Bathroom Addition Costs in St. George UT

Project ScopeLowHigh
Half bath (35 sqft, basic fixtures)$1,700$3,100
Full bath (60 sqft, mid-grade)$4,800$14,000
Full bath (80 sqft, tile shower)$14,000$17,200
Master bath (100+ sqft, premium)$17,200$52,200

What Affects Bathroom Addition Costs in St. George UT?

Labor rates: Contractors in St. George UT charge $43–$86/hour for bathroom addition work — slightly below the national average.

Material costs: Material prices in the Mountain region are slightly below national average due to local supply, transportation costs, and market demand.

Project complexity: Site conditions, permitting requirements, and non-standard layouts can add 15–30% to total project cost.

Frequently Asked Questions

How much does a bathroom addition cost in St. George UT?
Adding a bathroom in St. George UT costs $4,800–$52,200. A half bath (toilet + sink, ~35 sqft) runs $4,800–$3,100. A full bath (60–80 sqft) costs $3,100–$17,200. A master bath with walk-in shower, double vanity, and premium tile can reach $52,200.
Is adding a bathroom worth it in St. George UT?
Adding a bathroom typically returns 50–60% of the cost at resale in St. George UT. Homes with only 1 bathroom gain the most value from a second bath. Half bath additions near living areas have the best ROI — typically $10,000–$25,000 added to home value.
How long does bathroom addition take in St. George UT?
A half bath addition takes 2–4 weeks. A full bath addition takes 3–6 weeks. A master bath with custom tile work can take 6–10 weeks. In St. George UT, allow 2–4 weeks extra for permit approval. Plan for the space to be unusable during construction.
Can I add a bathroom without breaking through walls in St. George UT?
If you're converting existing space (large closet, unused room corner) and plumbing lines are accessible, you may minimize wall opening. However, new bathrooms need supply lines, drain lines, and venting — which almost always requires some wall or floor access. A licensed plumber in St. George UT can advise on the least invasive approach.

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Estimated cost in St. George UT

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