Common household projects In this section 3D guide for houses Interactive guides for various house types. Extensions A guide for single and two story extensions. Conservatories A mini guide about conservatories. Loft conversions More guidance on loft conversions. Porches Further guidance on porches. Outbuildings More information on outbuildings. Antenna Information about when an antenna needs planning or other permissions. Renovating your home A homeowner's guide to renovating your property. Running a business from home Find out if planning permission is needed for running a business from home.