Basement Waterproofing Cost by City (2026)

Basement waterproofing including drainage, membrane, sump pump, and repairs. Pricing varies meaningfully by city — coastal metros run 30-60% above the national average while affordable Sun Belt and Midwest markets run 5-20% below.

National avg
$6,000
Budget
$2,000
High-end
$15,000
43 cities covered
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Cost breakdown — national average basement waterproofing

Interior drainage
25%
$1,500
Labor
30%
$1,800
Sump pump system
15%
$900
Membrane & sealant
12%
$700
Excavation
10%
$600
Wall repair
$300
Permits
$200

Most and least expensive cities

Most expensive

  1. 1.San Francisco, CA$9,500
  2. 2.San Jose, CA$9,100
  3. 3.New York, NY$8,900
  4. 4.Brooklyn, NY$8,500
  5. 5.Los Angeles, CA$8,200

Least expensive

  1. 1.Augusta, GA$4,900
  2. 2.El Paso, TX$4,900
  3. 3.Rochester, NY$5,300
  4. 4.Tucson, AZ$5,300
  5. 5.Columbus, OH$5,300

All 43 cities

New York

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New York, NY
Avg: $8,900 · $2,700–$25,700
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Brooklyn, NY
Avg: $8,500 · $2,600–$24,500
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Buffalo, NY
Avg: $5,500 · $1,700–$15,900
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Rochester, NY
Avg: $5,300 · $1,600–$15,200

California

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Los Angeles, CA
Avg: $8,200 · $2,500–$23,600
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San Diego, CA
Avg: $7,700 · $2,300–$22,100
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San Jose, CA
Avg: $9,100 · $2,700–$26,200
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San Francisco, CA
Avg: $9,500 · $2,800–$27,300
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Sacramento, CA
Avg: $7,100 · $2,100–$20,400

Illinois

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Chicago, IL
Avg: $7,100 · $2,100–$20,500
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Aurora, IL
Avg: $6,500 · $1,900–$18,600
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Naperville, IL
Avg: $7,300 · $2,200–$21,000

Texas

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Houston, TX
Avg: $5,800 · $1,700–$16,700
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San Antonio, TX
Avg: $5,400 · $1,600–$15,500
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Dallas, TX
Avg: $6,100 · $1,800–$17,400
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Austin, TX
Avg: $6,500 · $2,000–$18,800
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Fort Worth, TX
Avg: $5,900 · $1,800–$16,900
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El Paso, TX
Avg: $4,900 · $1,500–$14,100

Arizona

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Phoenix, AZ
Avg: $5,700 · $1,700–$16,400
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Tucson, AZ
Avg: $5,300 · $1,600–$15,200
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Scottsdale, AZ
Avg: $6,700 · $2,000–$19,300

Pennsylvania

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Philadelphia, PA
Avg: $6,800 · $2,100–$19,700

Florida

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Jacksonville, FL
Avg: $5,700 · $1,700–$16,400
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Miami, FL
Avg: $6,700 · $2,000–$19,300
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Tampa, FL
Avg: $6,300 · $1,900–$18,100
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Orlando, FL
Avg: $6,100 · $1,800–$17,600
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Fort Lauderdale, FL
Avg: $6,900 · $2,100–$19,800

Ohio

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Columbus, OH
Avg: $5,300 · $1,600–$15,400

North Carolina

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Charlotte, NC
Avg: $5,600 · $1,700–$16,000

Washington

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Seattle, WA
Avg: $7,300 · $2,200–$21,000

Colorado

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Denver, CO
Avg: $6,500 · $1,900–$18,600
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Colorado Springs, CO
Avg: $6,000 · $1,800–$17,200
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Aurora, CO
Avg: $6,200 · $1,900–$17,900

Massachusetts

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Boston, MA
Avg: $8,100 · $2,400–$23,300

Tennessee

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Nashville, TN
Avg: $5,800 · $1,700–$16,600

Oregon

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Portland, OR
Avg: $6,900 · $2,100–$19,800

Michigan

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Detroit, MI
Avg: $5,500 · $1,600–$15,700

Georgia

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Atlanta, GA
Avg: $5,900 · $1,800–$16,900
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Augusta, GA
Avg: $4,900 · $1,500–$14,100
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Savannah, GA
Avg: $5,400 · $1,600–$15,500
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Marietta, GA
Avg: $6,100 · $1,800–$17,600

Minnesota

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Minneapolis, MN
Avg: $6,300 · $1,900–$18,100

Virginia

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Richmond, VA
Avg: $5,600 · $1,700–$16,200

Frequently asked questions

Basement waterproofing averages $6,000 nationally in 2026. Interior drainage systems start near $2,000; full interior solutions with sump pump and membrane run $5,000-$10,000; exterior excavation and membrane reach $10,000-$20,000+. Cost varies widely based on cause of moisture and severity.