How much does basement waterproofing cost in Compton, CA?

Most Compton homeowners spend between $3,300 – $13,200 on basement waterproofing, with an average around $7,150. Local labor prices 10% above the national average, so Compton quotes tend to land at the higher end of national ranges.

How many quotes should I get in Compton?

Get at least three written quotes from licensed, insured California contractors. Comparing line items — not just the bottom line — is the fastest way to spot an inflated bid in the Los Angeles market.

How much does basement waterproofing cost?

$3,000 to $12,000 on average. Interior drainage is $3,000 to $10,000; exterior excavation is $8,000 to $25,000.

Interior or exterior waterproofing?

Interior drain tile manages water that gets in and costs far less. Exterior membrane keeps water out entirely and is the permanent fix, at two to three times the price.

How much is a sump pump?

$1,000 to $3,000 installed, plus $500 to $1,500 for a battery backup that keeps working during a storm outage.

Is waterproofing covered by insurance?

Groundwater seepage is excluded from standard homeowners policies. Separate flood insurance or a water backup endorsement is required.

Will waterproofing fix mold?

It stops the moisture source, but existing mold needs separate remediation, typically $1,500 to $6,000.

Does a dry basement add value?

Yes — a documented, warrantied waterproofing system removes a major buyer objection and enables finishing the space.

Home/Cost guides/Basement Waterproofing/Compton, CA

Los Angeles · California

Basement Waterproofing cost in Compton, CA

Compton homeowners typically pay $3,300 – $13,200 for basement waterproofing. Local labor and materials price 10% above the national average.

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Compton average

$7,150

Typical low

$3,300

Typical high

$13,200

Per linear foot

$44 – $275

Sample ZIP

90220

What drives Compton pricing

Local labor

Licensed Compton contractors carry California workers' comp and prevailing wage pressure, and crews here quote roughly 10% above the national labor average. Demand in the Los Angeles market peaks in spring, so booking early usually beats a rush premium.

Permits & code

Compton follows the California Building Standards Code, so most structural, electrical, plumbing and re-roof work needs a permit from the Compton building department plus Title 24 energy compliance. Seismic bracing and soft-story retrofit rules apply to many older LA-area properties, and hillside lots trigger extra geotechnical review.

Climate & conditions

Compton sits in a warm Mediterranean climate with intense summer sun, so expect UV-stable, heat-tolerant materials and shaded scheduling in peak summer.

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Wall length to treat80 linear feet

Method

Foundation depth

Exterior access

Water problem

Estimated project cost

$440 – $1,360

Most homeowners pay around $900

Compare method

Cost by material in Compton

Installed Compton pricing per linear foot.

Option	Installed cost	Pros	Cons
Interior sealant	$6 – $17	Cheapest, DIY possible	Cosmetic — does not stop hydrostatic pressure
Interior drain tile + sump	$44 – $110	Effective, no landscaping destroyed, done in days	Relies on a pump and power
Exterior membrane	$110 – $275	Stops water before it reaches the wall — the permanent fix	Most expensive and disruptive
Crawlspace encapsulation	$22 – $66	Controls humidity, mold and energy loss	Needs a dehumidifier to keep working
Wall reinforcement	$88 – $220	Addresses bowing plus water together	Structural scope and engineering

Where the money goes in Compton

A typical $7,150 Compton project, broken down by line item.

Labor and excavation50% · $3,575
Drainage materials22% · $1,573
Sump pump and equipment16% · $1,144
Concrete restoration and disposal12% · $858

Common add-ons

Extras that show up on Compton quotes but rarely in the headline price.

Sump pump

$660 – $2,200

Battery backup

$550 – $1,650

Dehumidifier

$1,300 – $3,300

Mold remediation

$1,650 – $6,600

Vapor barrier

Per square foot

$2 – $7

Egress window

$2,750 – $6,600

Ways to save in Compton

Do the cheap exterior fixes first — gutters, downspout extensions and grading solve many wet basements for under $1,000.
Choose interior drain tile over exterior excavation unless the wall itself is failing.
Get bids from waterproofing specialists and a general contractor; approaches and prices differ enormously.
Ask about a transferable lifetime warranty — it holds value at resale.
Install the sump and drainage before finishing the basement, never after.

Compton FAQs

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Basement Waterproofing cost near Compton

Basement Waterproofing cost in Los Angeles, CA

$3,720 – $14,880

Basement Waterproofing cost in Long Beach, CA

$3,660 – $14,640

Basement Waterproofing cost in Pasadena, CA

$3,840 – $15,360

Basement Waterproofing cost in Glendale, CA

$3,750 – $15,000

Basement Waterproofing cost in Santa Clarita, CA

$3,480 – $13,920

Basement Waterproofing cost in Torrance, CA

$3,690 – $14,760

More California cities

San Diego San Jose San Francisco Oakland Sacramento Fresno Anaheim Santa Ana

Other project costs in Compton

Fence Installation in Compton

$1,650 – $4,400

Roof Replacement in Compton

$9,350 – $37,400

Kitchen Remodel in Compton

$19,800 – $104,500

HVAC Replacement in Compton

$6,050 – $19,800

Deck Building in Compton

$4,840 – $13,200

Window Replacement in Compton

$495 – $1,650

See every Compton cost guide