Editorial summary
Delta Building Technologies, formerly Delta Controls Chicago, is listed at 650 Oakmont Ln in Westmont, IL as a basement waterproofing contractor. The record shows crawl space waterproofing as the only explicit service. That means the listing can support homeowners looking for help with moisture control below the house, but it does not confirm a broader menu such as encapsulation, drainage, sump pump installation, mold remediation, or foundation repair. The profile also does not include a website, service-area text, years in business, free inspection, or financing information. A phone number is present, so direct contact is available from the directory record. Google data on the listing shows a 5-star rating from 1 review, which is a positive signal but still a very small sample. For local search purposes, the strongest facts here are the Westmont location, the waterproofing focus, and the explicit former business name. Those details help the listing stay relevant to crawl space waterproofing searches without overstating what the record actually says.