When looking for residential cleaning services in Chicago or any other metropolitan area, the first step to take is to see if friends or coworkers can provide you with referrals. Word of mouth is the best advertising for a business, so if a friend can recommend a good service, it's probably worth checking out. But if you cannot find referrals, a good place to start looking for house cleaning services is the internet. Search for residential or commercial cleaning services in Chicago area to see what results you get.