Here is an Example of What you Would Get for £99: Loft Conversion Example

NOTE: If You Need Anything Other Than a Loft Conversion/Rear Extension Such as Internal Floor Plan Changes, please Send Me a Custom Offer by Clicking on Send Custom Order on the Right. Price will be Less or More Based on Complexity of Work. Price is £10 for 50 meter square. 

I will develop a architectural concept for you. It can be as residential architecture as well as public utilities.