Looking for a sewer scope inspection in San Mateo, CA? Describe your project once and up to three sewer scope inspectors who work in San Mateo and San Mateo County get back to you with a quote. It's free and there is no obligation.
San Mateo is home to about 103,006 people (2024 Census Bureau estimate), a shrinking community (−2.5% since 2020). With 8,489 people per sq mi, it is a densely built-up area. Older neighborhoods with clay or cast iron laterals and mature trees are where a sewer scope most often pays for itself.
San Mateo at a glance
- Population (Census Bureau estimate, 2024)
- 103,006 (−2.5% since 2020)
- Rank in California
- 71st of 482 cities and towns
- Land area
- 12 sq mi
- Population density
- 8,489 people per sq mi (densely built-up)
- Type
- City (San Mateo city)
- Main county
- San Mateo County
What to check before hiring in San Mateo
- Who does it: home inspectors and plumbers with a sewer camera; in California, plumbing repairs themselves require a licensed plumber.
- Deliverables: ask for the video file and a written report with the location and depth of defects.
- Price drivers: access to a cleanout, line length and whether the line needs clearing first.
- Responsibility: check with the city or utility which part of the line the owner is responsible for.
Useful official resources
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NASSCO
Standards for pipeline inspection and rehabilitation.
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InterNACHI
Find certified home inspectors.
Services available in San Mateo
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Sewer scope for a home purchase
Camera inspection of the main sewer line during a purchase, with the video and a written report.
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Sewer camera diagnosis
Camera inspection to find the cause of slow drains or backups: roots, breaks, bellies or blockages.
Frequently asked questions in San Mateo
How much does a sewer scope cost in San Mateo, CA?
It depends on access to the line and its length. Describe the home: inspectors who serve San Mateo reply with a quote.
Should I scope a newer home?
The risk is lower, but construction debris or settling can still damage a line. Many buyers scope any home with large trees nearby.
What if the scope finds damage?
You can ask the seller for a repair or a credit, and get quotes for a spot repair, lining or replacement.
Which sewer scope inspectors will contact me?
Up to three independent sewer scope inspectors who serve San Mateo and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.