Whether you are contemplating a renovation to your personal residence, your business, or hospitality venue – hotel, restaurant, spa – it’s very important to hire an architect and an interior designer with experience in that area. 1. Design Investment: A construction renovation is one of the most expensive activities one can undertake. It is much more expensive than buying a new automobile. Therefore, hiring an architect / designer is a basic insurance policy, mitigating potential problems and costly overruns.