"We had our crawl space treated for mold. It was a tough job, in an unpleasant space. The owner Tom was invaluable. He not only explained all the work, but his engineering expertise uncovered several other dangerous trouble spots for us - answered why house was sinking/revealed vents opened by previous owner, causing needless payment for ac and heat of a large storage area for 20 years, need for retaining wall outside to stop water entering foundation, etc. (MasterTech could not make all corrections, but alerted us to the need, and told us what was not necessary to do!) Tom…