Architectural Services Prices
We provide a comprehensive fixed fee concept design, planning, and construction drawings for architectural plans and planning drawings across Hertfordshire, London, and nearby areas. They are all inclusive with no hidden charges. These are guide prices and discounts are available if your architectural project combines two or more proposals listed below. If your renovation isn’t listed, feel free to reach out for a complimentary estimate..
Please note that planning permission application fees may differ based on your Local Council and the type of renovation.
Architectural Services
Cost
First visit and consultation
Free
Stage 1 – Preparation and Briefing
Survey and preparation of existing drawings
£400
Stage 2 – Concept & Design Development
Single storey extension
£600
Double storey extension
£900
Loft conversion
£600
Garage conversion
£600
Garden room
£600
Stage 3 – Planning & Approvals *
Prepare and submit a Planning Application
£300
Prepare and submit a Planning Application (conservation area)
£400
Amendment of planning drawings and resubmission
£200
Stage 4 – Technical Design & Compliance **
Single storey extension
£900 – £1200
Double storey extension
£1200 – £1500
Loft conversion
£900 – £1200
Garage conversion
£700 – £900
Garden room
£900 – £1200
Thames Water build over agreement drawings and submission
£400
*Planning fee to be paid directly to the Local Council
**Structural layout & calculations by structural engineer