If you plan to build a house, housing or office block, an industrial unit or a hotel, you will need help from a variety of professionals. Amongst others, you'll probably need to hire architects, surveyors, builders, electricians, decorators and plumbers. Make sure you check each tradesperson you hire has valid insurance, good references and the correct skills and experience for your project. Planning and organisation is important, even simpler things like building a garage, a shed or a timber frame house can still be disastrous if managed incorrectly. Make sure that you follow legal guidelines and get all of the necessary approvals for building work, this is absolutely vital.