Skip to content

Service area

Environmental testing in Modesto

Modesto is the largest city in Stanislaus County, according to the Department of Finance's 2026 estimates. Share the address and the test you have in mind, and we see which Modesto partners are taking requests. If nobody near you is, we'll let you know.

Save at least $100 with the Top Test Connect service credit.

Credit applies when you book with the partner testing company we match you with. One credit per request, no cash value.

Request a tester

No obligation. You never have to use the tester we match you with.

Modesto housing compared with the county

About 55 percent of Modesto's roughly 76,000 homes predate 1980, compared with about 48 percent countywide, per the American Community Survey. The 1970s alone account for around 23 percent of the city's housing.

Ceiling texture and sheet flooring put in during the 1970s are worth sampling before anyone pulls them out. If yours was painted before 1978, add a lead check before stripping trim or doors.

Cool winters, hot Augusts

January nights at Modesto's city-county airport average about 39°F in NOAA's 1991-2020 normals, and daytime highs that month reach only about 56°F. By August, average highs are near 94°F.

About 10 of the station's roughly 12 inches of yearly rain fall between November and March. Water that a winter storm pushes into an attic or crawl space can stay out of sight; if those spaces smell musty, mold testing or moisture mapping can find out why.

Services

Nearby

Questions

Is a Modesto home from the 1970s likely to have asbestos?

It is possible. Popcorn ceilings, flooring and pipe insulation from that era sometimes contain it, and only a partner's lab, analyzing a sample, can confirm it.

Can you help a Modesto landlord test between tenants?

Yes. Request the tests you need, such as lead or mold, and tell us when the unit will be empty. We look for a partner who can work with that timing.

Request a tester

Use the city or ZIP on the form. The credit locks when the request is submitted.

Request a tester

Top Test Connect does not perform any testing, sampling, inspections, or abatement.

Request a tester