Most buyers will instruct a survey and if you are obtaining a mortgage then this will be essential. A surveyor will visit the home you want to purchase to evaluate the building condition and price. The surveyor will file a report that goes to the mortgage lender and to you, the buyer.
Once your mortgage lender has received its copy of the report and they are satisfied with everything, they will issue a formal mortgage offer – a copy will be sent to you and to your solicitor. Make sure you sign this and return it as soon as possible. There are no legal obligations until contracts are signed.