Covering Isleworth
Isleworth sits 10 miles west of London, with Hounslow 1 miles to the south-west and Heston 2 miles to the west.
Homes in London
London projects often mean working on period terraces with neighbours on both sides, tight access through the house and conservation area controls, so careful planning and party wall work matter as much as the build.
What is included in architectural design and planning in Isleworth?
Designing and building under one roof means the drawings are priced as they are drawn, so there are fewer surprises when the quote arrives. If you only need drawings and a planning application, we can do that and you are free to use any builder.
- Design options and 3D views
- Submission and liaison with the planning officer
- Structural engineer’s calculations
How much does architectural design and planning cost in Isleworth?
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 |
Do you need permission for architectural design and planning in Isleworth?
Projects in England go through two separate checks. Planning (or confirmation that the work is permitted development) comes from the district, borough or unitary council, and building regulations approval comes from the council’s building control team or a registered building control approver. Where work touches a shared wall or digs near a neighbour’s foundations, the Party Wall etc. Act 1996 applies.
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 Isleworth homeowners check first?
- Pre-application advice from the council can help on sensitive sites.
- Conservation areas and listed buildings need extra design care and supporting statements.
What are the steps?
- Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- 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.
Do I need a structural engineer?
For steels, new openings, lofts and extensions, yes. We arrange the calculations.
Do you work in Isleworth?
Yes. Isleworth is within our coverage for architectural design and planning, along with nearby Hounslow and Heston.
Also covering
- Architectural design and planning in Hounslow
- Architectural design and planning in Heston
- Architectural design and planning in Richmond
- Architectural design and planning in Southall
Learn more about architectural design and planning, or see every project we cover in Isleworth.

