WHAT DO WE DO? Design Service Extensions Unlimited provides a free extension design service. Our background ensures we provide a design solution that balances sound construction, good taste and a fair price. Your extension will be designed to enhance and compliment your home. Above all, we listen. It’s your home… tell us what you want to achieve. Working Drawings Extensions Unlimited provide working drawings produced by our registered practitioners. Quotations are also available for clients who supply their own working drawings. Permits & Engineering The Company will arrange for all building permits and liaise with all local government bodies as required. This service can include detailed soil reports, engineered working drawings (as required) and computations. All asset protection fees are paid as required by local government.