[stevesearer]

I run an office design website and have a bit of experience with this type of thing.

Often architecture and design firms aren't interested in answering questions about products on Houzz because the people asking for the information will almost certainly never be a client of theirs. Plus depending on the size of firm, they aren't staffed to sit around answering questions from random people online.

In addition, it is often the case that the products used in custom homes or projects can't be sourced and purchased easily online which makes it difficult to earn any sort of affiliate revenue. This is likely why many photos on Houzz show similar products but not the exact product.