Extension plans and drawings across West Bromwich
We prepare extension plans and drawings for homes in West Bromwich, as a stand-alone service or as the first stage of a design and build project.
- Guide price in West BromwichFrom £1,150 inc VAT
- PlanningWe find the right route for you
- Timescale2–6 weeks for drawings
- Postcode districtsB21, B66, B67, B69, B70
What is included
- Two or three layout options to compare
- Planning drawings: existing and proposed plans and elevations, site and location plans
- Building regulations drawings and specification
- Measured survey of the house and garden
Fees in West Bromwich
Guide fees for West Bromwich including VAT, using our West Midlands factor of ×0.97. Council and building control charges are not included.
| Option | What it covers | Guide price |
|---|---|---|
| Essential | Measured survey and planning drawings | £1,150 – £2,150 |
| Standard | Planning drawings plus building regulations drawings | £2,100 – £3,700 |
| Premium | Full pack with structural calculations and 3D visuals | £3,250 – £5,350 |
Try the guide-price tool to see a range for your own size and finish.
Extensions in and around West Bromwich
Postcode districts we cover around West Bromwich include B21, B66, B67, B69, B70, B71. Nearby, we also take on projects in Smethwick (2 miles), Wednesbury (3 miles), Tipton (3 miles), Dudley (4 miles).
For homes towards Staffordshire, Great Wyrley is around 10 miles away. The West Midlands has a large stock of 1930s and post-war semi-detached houses, which are well suited to rear, side and over-garage extensions, plus Victorian terraces in the older inner areas.
Planning and approvals in West Bromwich
In England the main routes are permitted development (ideally confirmed with a lawful development certificate, £274), larger home extension prior approval (£249, 42 days) and a householder planning application (£548, normally 8 weeks), with council fees as set from 1 April 2026.
Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
What happens next
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions answered
Do you cover all of West Bromwich?
Yes. We cover West Bromwich and the surrounding parts of West Midlands. Site visits are free and there is no obligation.
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for West Bromwich, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Do I need building regulations approval in West Bromwich?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
How much do extension plans cost?
Our design packs range from about £1,150 to £5,350 including VAT, from planning drawings only to a full pack with building regulations drawings, structural calculations and 3D views. Council fees are separate.
Do I need an architect?
Not necessarily. For most extensions an experienced designer or architectural technologist is enough. For listed buildings or complex sites an architect’s input can help.
Book a free site visit in West Bromwich
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.