They usually come from City Councils, county boards, school levies, HOAs, insurance requirements on page 192.PGP.168, etc. that are changing all the time. Depending on where you are in the US, it really can be that bad very quickly. Ever buy a house? The contract you sign is literally thousands of pages of legalese that may or may not contradict everything else in it. The Real Estate Agents (REAs) give you 'cover' and smooth out all bumps. Joan knows Frank on XYZ council, therefore you'll never ever catch any flack. Freddy is a REA you used and therefore everything is 'above board' as far as a judge cares, next case please. Ahmed knows good and bad home inspectors, it'll take you 3 months of 8 hour days to begin to figure them out. Etc. Yes, corruption/nepotism sucks, PM me when it has passed from the face of the Earth. If you are buying a home in anywhere near a 'desirable' market, use a REA. 5k for 'peace of mind' is more than worth it.