Extension plans and drawings in Aberdare
For Aberdare homeowners we handle extension plans and drawings, with fees agreed in writing before any work starts.
- Guide price in AberdareFrom £1,100 inc VAT
- PlanningWe find the right route for you
- Timescale2–6 weeks for drawings
- Postcode districtsCF44

What is included
- 3D views to check the look and the light (full pack)
- Two or three layout options to compare
- Building regulations drawings and specification
- Structural calculations from an engineer (full pack)
- Measured survey of the house and garden
The most expensive changes are the ones made after the steel is ordered. A good design stage settles layout, heights, glazing and services on paper, so the build price is firm.
Local to Aberdare
Our survey diary covers Aberdare, including CF44. The same team covers Rhondda (4 miles), Merthyr Tydfil (4 miles), Tonypandy (6 miles), Gelligaer (9 miles), all within easy reach.
Ebbw Vale, in Gwent, is roughly 11 miles from Aberdare and also on our list. In Wales, terraced houses with rear offshoots are common in the towns, while detached houses and bungalows dominate in rural areas.
Design and approval fees for Aberdare
These are guide fees for Aberdare, adjusted for Wales (×0.93) and including VAT. Council application and inspection fees are paid separately.
| Option | What it covers | Guide price |
|---|---|---|
| Essential | Measured survey and planning drawings | £1,100 – £2,050 |
| Standard | Planning drawings plus building regulations drawings | £2,000 – £3,550 |
| Premium | Full pack with structural calculations and 3D visuals | £3,150 – £5,150 |
Want a range for your exact size? The guide-price tool takes about a minute.
Do I need planning permission in Aberdare?
In Wales the routes are permitted development (a lawful development certificate is available), or a householder planning application to the council. Wales has no prior approval scheme for larger rear extensions, and fees are set by the Welsh Government.
Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.
Building regulations approval is separate from planning. Wales has its own building regulations and approved documents; the council or a registered building control approver checks the plans, inspects the work and issues a completion certificate.
Applications are decided by the local planning authority (your county or county borough council, or the national park authority).
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
We visit your Aberdare home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
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
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Common questions in Aberdare
How long does this take for a Aberdare home?
2–6 weeks for drawings, depending on the council and the complexity of the project.
Do you cover all of Aberdare?
Yes. We cover Aberdare and the surrounding parts of Mid Glamorgan. Site visits are free and there is no obligation.
Will my neighbours in Aberdare be involved?
If a planning application is needed, the council notifies neighbours. If the work is on or near a shared boundary, party wall notices may also be needed.
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.
Can I use your drawings with another builder?
Yes. Once paid for, the drawings are yours to use for your project.
Book a free site visit in Aberdare
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.