Architectural drawings

Architectural drawings are needed to re-draw the original plans and incorporate the modifications made to the house to satisfy the Building department, leading to the eventual awarding of a completion certificate. The architect who initially worked on the project has since moved away. The changes required are not extensive, and the house is a domestic property with two bedrooms and a pitched/vaulted ceiling. All the necessary work has already been completed, but the existing drawings do not accurately reflect the modifications made.