Cost to Basement Waterproofing in Phoenix, AZ

$2,090–$11,400 in Phoenix

5% below the national average · 0.95x cost multiplier

In Phoenix, a basement waterproofing runs $2,090 to $11,400 on average — about 5% below what homeowners pay nationwide. The Mountain West market's labor costs account for most of the gap, with material pricing and local permitting fees adding to the spread. Use the cost table below to compare budget, mid-range, and premium options side by side.

Cost Breakdown in Phoenix

Line Item	Low	Mid	High
Cost per sq ft	$3	$6	$11
Materials	$475	$2,375	$7,600
Labor	$380	$3,325	$9,500
Permits	$0	$285	$475
Total	$855-5% vs. national avg	$5,985-5% vs. national avg	$17,575-5% vs. national avg

Budget

Interior waterproofing paint/sealant on walls, minor crack injection, improved grading around foundation. DIY-friendly exterior fixes.

Mid-Range

Interior French drain system with sump pump, or exterior waterproofing membrane on one wall. Addresses moderate water intrusion.

Premium

Full perimeter interior drainage system, battery backup sump pump, full exterior excavation and membrane on all walls, French drain, and discharge piping.

Material Options

Material prices below are national averages; availability in Phoenix may shift costs slightly.

Material	Cost/Unit	Pros	Cons	Best For
Waterproofing Paint/Masonry Sealer	$0.50-$2/sq ft applied	Lowest cost, DIY-friendly	Only works on minor dampness, not active water intrusion	Slight wall dampness, minor condensation issuesLowest cost, DIY-friendly
Interior French Drain System	$50-$100/linear ft of perimeter	Effective at managing water, less invasive than exterior	Water still enters foundation, requires ongoing sump pump maintenance	Most common solution for water intrusion in finished or unfinished basementsEffective at managing water, less invasive than exterior
Exterior Waterproofing Membrane	$8,000-$25,000 whole-house	Stops water at the source, most thorough solution	Requires full excavation, most expensive option	Severe water problems, new construction additions, comprehensive permanent fixStops water at the source, most thorough solution
Epoxy/Polyurethane Crack Injection	$100-$500 per crack	Permanently seals individual cracks, targeted fix	Only addresses specific cracks, not widespread seepage	Isolated foundation cracks with water intrusionPermanently seals individual cracks, targeted fix
Drainage Board and Dimple Mat	$2-$5/sq ft installed	Creates a drainage gap between foundation wall and interior space	Must connect to drainage system to be effective	Wall drainage in partially waterproofed basementsCreates a drainage gap between foundation wall and interior space

Other Projects in Phoenix

Full Kitchen Remodel

Full Bathroom Remodel

Central AC Installation

Back to national average for Basement Waterproofing

Phoenix Estimate

Typical Range

$2,090–$11,400

vs. National Average

5% below national

Cost Multiplier

0.95x

Cost Per sq ft

$3–$11

Estimates apply Phoenix's 0.95x regional cost multiplier to national averages. Actual bids vary by contractor, project scope, and timing.

See national average costs →