Basement and foundation leak repair
Find and fix damp basements, leaking cracks and poor drainage for homeowners in your area.
- $3k-15k
- Part-time
- Out and about
- Licence or permit needed
Estimates for a small start in the US, not guarantees.
Official data
6,489 US businesses with employees in this field, +3.4% in a year
NAICS 238190 “Other foundation, structure, and building exterior contractors”. Source: U.S. Census Bureau, County Business Patterns 2023.
What it is
Stopping water getting into basements and crawl spaces. Typical jobs are injecting sealant into foundation cracks, applying interior sealants, fixing gutters and grading, and installing simple drainage or sump pump solutions.
Your first three steps
- Check your state's contractor licensing rules and what job size needs a license
- Take a manufacturer training course on crack injection or sealing systems and buy a starter tool kit
- Introduce yourself to local home inspectors, realtors and plumbers for referrals, and offer a few low-cost first jobs for reviews
Who pays
Homeowners with damp or leaking basements, landlords, real estate agents and buyers after a home inspection flags moisture.
How it makes money
Quoted price per job, from a small crack repair to a larger drainage project. Inspections can be free or a small fee, and referrals from inspectors and agents bring repeat leads.
Skills that help
- Basic construction and concrete knowledge
- Diagnosing where water is coming from
- Giving clear, honest quotes
- Comfortable working in tight, damp spaces
Watch out for
- Contractor license rules vary by state and sometimes by county or city, so check with your state licensing board
- General liability insurance, and workers' compensation once you hire help
- Warranties and guarantees on your work, so only promise what you can stand behind
- Mold, structural problems or radon found during a job may need a specialist, so know when to refer out
- Heavy, dirty work in confined spaces, so check safety gear and ventilation
Deep research report · US
Everything you need to start: basement and foundation leak repair
Researched with live web search for United States: real startup prices, the licences and rules, what others charge, a break-even example, how to find your first customers and a 30-day launch plan. With sources.
- Startup costs with real prices
- Licences, registration and rules
- Pricing: what others charge
- Break-even example
- Finding your first customers
- 30-day launch plan
- Risks and how to reduce them
Questions people ask
How much does it cost to start a basement waterproofing business?
Startup costs are typically estimated at around $3,000 to $15,000, depending on the equipment, materials and insurance you need and the types of jobs you take on, such as crack injection or sump pump installs.
How much can a basement leak repair business earn?
Monthly revenue is typically estimated at around $3,000 to $15,000, depending on how many jobs you complete and their size. Plan for at least about 15 hours a week to get started.
Do I need a license to repair basement leaks?
Contractor license rules vary by state and sometimes by county or city, so check with your state licensing board. Also check general liability insurance, workers' compensation once you hire help, and what warranties you can stand behind.
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