Does a pre-1980 Redding house need an asbestos survey before demolition

An excavator at work on a demolition site.

Order the survey before the demolition crew is scheduled, because the lab turnaround sets the earliest possible start. The notes at redding demolition contractor clytemnestra project start with the age of the house, since a teardown contractor in Redding, CA treats anything built before the early eighties as suspect until a lab says otherwise.

Why the housing era matters

Heavy machinery and rubble at a demolition site.

Much of the older housing near Shasta College and the neighborhoods along Interstate 5 went up when asbestos was still a normal building ingredient. It turns up in drywall joint compound, textured ceilings, vinyl floor tile and its mastic, duct wrap, and the felt under roofing. None of it is dangerous sitting still. It becomes a problem when a demo hammer or a jackhammer turns it to dust.

What the surveyor actually samples

An excavator demolishes an old brick building at a construction site, creating debris and dust.

A certified surveyor walks every room and takes small cuts of each suspect material, usually three from each separate area. Plaster over lath gets a core sample through all the layers. The samples go to a lab that reports whether any fiber is present, and the report lists each material with its location in the house.

What happens when the result is positive

A positive material has to be removed by a licensed abatement crew before the structure is knocked down, or in some cases the whole building is taken down wet and loaded out as asbestos waste. Wetting keeps the dust down, and the debris goes to a landfill that accepts it, double bagged or wrapped in plastic. The loads are tracked from the site to the dump.

Where the survey sits in the schedule

The lab report is needed for the permit notice, so the survey happens first, then the notice to the air district, then the waiting period. That chain adds weeks. A homeowner who calls in the summer, hoping for a September teardown, often loses the window to the paperwork rather than the machinery.

Lead paint is a separate survey

Asbestos and lead paint are tested separately and handled by different rules, even though they show up on the same old houses. A clean asbestos report says nothing about the paint on the siding. Both reports go in the job file before the excavator is unloaded. A survey costs little time compared with a stop work order, and the report stays valid for the life of the project. If the house has had an addition or a remodel, the survey covers the newer rooms separately, because materials differ from one decade to the next.