Fixed packages. No hourly surprises.
Most firms charge a percentage of your build cost, which means the fee moves. We quote one fixed written price after a free route check, and it includes unlimited design revisions.
What a fixed package includes
- Your planning route confirmed in writing (PD, prior approval or full planning)
- Council-ready drawings, first draft within 10 working days
- Unlimited design revisions until it is right
- Submission handled, with free changes if the council asks
- Independent drawings you can take to any builder
Two costs are always separate and payable to others, and we flag both up front: the council's application fee (£548 for a householder application in England) and a structural engineer where the structure changes.
Quick answers
How much do architectural drawings cost in the UK?
Across the UK market, planning drawings typically run £1,200–£2,500 and a full set with Building Regulations £2,500–£5,000. Exp|Arc quotes one fixed written price for your project after a free route check, so it cannot drift.
Are there any extra costs?
Two are standard and payable to others: the council application fee (£548 for a householder application in England) and, where the structure changes, a structural engineer. We tell you about both up front, before you commit.
Why fixed rather than a percentage?
Percentage fees rise with your build cost, so the bill moves. A fixed package means the price you agree is the price you pay, with unlimited design revisions included.
What changes the price
Two projects of the same size can need very different drawing sets. These are the things that move the number, and we tell you which apply before you commit.
Your planning route
A permitted development check with a lawful development certificate is a smaller job than a full planning application with supporting statements.
Whether the structure changes
Removing walls or forming openings brings in a Building Regulations set and a structural engineer.
The property itself
Listed buildings, flats and conservation areas need more drawings and more supporting evidence than a standard semi.
Why fixed beats hourly
See it applied: Extension drawings · Conversions · Commercial change of use · Pricing questions
Get your fixed quote
Tell us the project and postcode. We confirm the route and reply with one written price, usually the same working day.