Covering Windsor
Our coverage around Windsor (SL4) also includes Slough, Egham and Staines.
Homes in the South East
The South East has a lot of 1930s and post-war semi-detached housing, well suited to rear extensions and hip-to-gable loft conversions, alongside period properties in conservation areas that need a more careful design.
What is architectural design and planning?
Architectural design and planning covers everything before building starts: a measured survey of the house, design options, planning or permitted development drawings, the application itself, building regulations drawings and structural calculations. We offer it on its own or as part of a design-and-build project.
- Measured survey of the existing house
- Submission and liaison with the planning officer
- Structural engineer’s calculations
How much does architectural design and planning cost in Windsor?
What architectural design and planning typically cost. These are guide ranges; the written quote for your house replaces them.
| Architectural design and planning | Guide price incl. VAT |
|---|---|
| Measured survey and existing drawings | £500 to £1,200 |
| Planning drawings and application | £1,200 to £3,000 |
| Building regulations drawings and specification | £1,000 to £2,500 |
| Structural calculations | £500 to £2,000 |
How is architectural design and planning approved in Windsor?
English projects need planning clearance from the local council, building regulations sign-off from building control, and party wall notices where the work is on or near a shared boundary. We prepare and manage all three.
We confirm whether your project is permitted development, needs prior approval or needs a householder application, and prepare the right submission. A lawful development certificate is the best proof that permitted development work is lawful.
What should I think about before starting?
- Planning and building regulations are separate approvals; most projects need building regulations even when planning is not needed.
- Conservation areas and listed buildings need extra design care and supporting statements.
From first call to completion
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
- Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
- We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.
What people ask before starting
Can I use your drawings with another builder?
Yes. If you buy drawings on their own, they are yours to use.
What is a lawful development certificate?
A certificate from the council confirming that work is permitted development, which is useful when you sell.
How do I get a price for architectural design and planning in Windsor?
Use the guide price tool for a ballpark figure, then book a visit for a fixed written price for the agreed specification.
Architectural design and planning in nearby towns
- Architectural design and planning in Slough
- Architectural design and planning in Egham
- Architectural design and planning in Staines
- Architectural design and planning in Maidenhead
Learn more about architectural design and planning, or see every project we cover in Windsor.

