How much does a floor joist repair cost in Salt Lake City?

A floor joist repair in Salt Lake City typically costs $1,419-$5,678, 5% below the $3,500 national average.

How long does a floor joist repair take?

A floor joist repair typically takes 1-3 days. The minimum timeline is 4 hours, and complex projects can run 2 weeks.

Can I DIY a floor joist repair?

DIY feasibility for a floor joist repair is rated Not Recommended.

Cost to Floor Joist Repair in Salt Lake City, UT (2026)

If you’re budgeting a floor joist repair in Salt Lake City, most projects run $1,419-$5,678, 5% below the $3,500 national average. What moves that number most is usually one thing: Number of Joists Affected. On its own it can swing the cost by $200 - $800/joist, so that’s the decision to slow down on before you sweat the smaller stuff.

Easiest place to save: Sister joists ($200-$400 each) instead of full replacement ($400-$800 each) when the existing joist retains at least 50% of its structural integrity

In the Mountain West (where Salt Lake City sits): Moderate costs, dry climate reduces moisture-related issues.

$1,419-$5,678 in Salt Lake City

5% below the national average · 0.95x cost multiplier

Homeowners in Salt Lake City typically spend $1,419-$5,678 on a floor joist repair, about 5% 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
Materials	$208	$832	$2,600
Labor	$437	$1,574	$3,497
Permits	$0	$156	$312
Total	$645-8% vs. national avg	$2,874-6% vs. national avg	$7,033-5% vs. national avg

Budget

Sistering 1-3 joists in an accessible basement, no subfloor work needed

Mid-Range

Sistering or replacing 4-8 joists, some subfloor repair, structural engineering assessment

Premium

Major joist replacement across a large area, subfloor replacement, beam upgrades, limited access crawl space work

Material Options

Material prices below are national averages; availability in Salt Lake City may shift costs slightly.

Material	Cost/Unit	Pros	Cons	Best For
Dimensional Lumber Sistering (2x8, 2x10, 2x12)	$3-$8/linear ft	Most affordable, matches existing joist construction, readily available	Adds width to the repaired joist, can be hard to maneuver in tight spaces	Most common repair method, accessible basementsMost affordable, matches existing joist construction, readily available
LVL (Laminated Veneer Lumber)	$5-$12/linear ft	Stronger than dimensional lumber, straighter, won't warp or twist	More expensive, heavier, must be special ordered	Long spans, high-load areas, premium repairsStronger than dimensional lumber, straighter, won't warp or twist
Steel Flitch Plate	$8-$15/linear ft	Adds tremendous strength in minimal thickness, ideal for tight spaces	Requires bolting through existing joist, heavier, needs professional install	Reinforcing joists where adding width is impossible, maximum strength needsAdds tremendous strength in minimal thickness, ideal for tight spaces
Engineered I-Joists (TJI)	$4-$10/linear ft	Lightweight, strong, consistent dimensions, no warping	Cannot be sistered to dimensional lumber, full replacement only	Full joist replacement, new construction standardsLightweight, strong, consistent dimensions, no warping

Other Projects in Salt Lake City

Full Kitchen Remodel

Full Bathroom Remodel

Basement Finishing

Back to national average for Floor Joist Repair

Salt Lake City Estimate

Typical Range

$1,419-$5,678

vs. National Average

5% below national

Cost Multiplier

0.95x

This 0.95x 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 →