Covering East Grinstead
We work in East Grinstead (RH19) and the places around it, including Horley, Crawley and Crowborough.
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 goes into 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.
- Submission and liaison with the planning officer
- Building regulations drawings and specification
- Structural engineer’s calculations
What is the guide price for architectural design and planning in East Grinstead?
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 |
Planning and building rules in East Grinstead
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 East Grinstead 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.
From first call to completion
- Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
- Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
- Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
- We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.
Questions about architectural design and planning in East Grinstead
How much do extension plans cost?
Typically £3,000 to £7,000 including VAT from measured survey to building regulations drawings, plus council fees.
How long does planning take?
Councils aim to decide householder applications within eight weeks of validation.
Who deals with the council for a project in East Grinstead?
We do. We prepare the drawings, submit planning or permitted development paperwork if needed, and arrange building control inspections.
Architectural design and planning in nearby towns
- Architectural design and planning in Horley
- Architectural design and planning in Crawley
- Architectural design and planning in Crowborough
- Architectural design and planning in Haywards Heath
Learn more about architectural design and planning, or see every project we cover in East Grinstead.

