The supply of services to your neighbourhood may have required the installation of electricity, water and sewerage pipes through your property. They are normally located in an easement within your boundary, certain building and safety restrictions apply to these easements and access must be maintained to allow safe working conditions for relevant authorities when carrying out maintenance. If you are at the design stage of a proposed extension or some other construction project within your block boundary you contact the relevant authority for information regarding the location of services within your block and any restrictions that may apply.