Blackwood, South Wales Valleys
Rear extension planning drawings in Blackwood
Measured survey, design options, planning drawings and the application, handled for you. If you live in Blackwood and want to know what a rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Blackwood and its postcode districts NP12 are part of our South Wales Valleys coverage. Rear extension applications in the South Wales Valleys are householder applications, which councils aim to decide within about eight weeks.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
What do rear extension planning drawings cost in Blackwood?
As a guide, £1,000–£2,500 including VAT for a single-storey rear extension, or £2,000–£3,500 for a two-storey scheme. Planning fees in Wales are set by the Welsh Government; we confirm the current householder fee when we prepare the application. Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a rear extension in Blackwood?
Planning for a rear extension in Blackwood follows the Welsh householder rules.
In Wales a rear extension of more than one storey can be permitted development if the ground floor projects no more than 4 metres and the upper floor no more than 3 metres, with at least 10.5 metres to the rear boundary. It is not permitted development in conservation areas, National Parks or National Landscapes, so many double-storey schemes need a householder application.
Welsh councils aim to decide householder applications within 8 weeks.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Blackwood like to extend?
Stone terraces along the valley floors and post-war semis higher up are typical of Blackwood. Sloping sites are common, so floor levels and retaining walls are designed at the start.
How a rear extension in Blackwood comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Rear extension planning drawings near Blackwood
Neighbouring places we cover include Bargoed (1.5 miles) and Gelligaer (2.1 miles).
- Rear extension planning drawings in Bargoed
- Rear extension planning drawings in Gelligaer
- Rear extension planning drawings in Abercarn
- Rear extension planning drawings in Nelson
- Rear extension planning drawings in Treharris
Other work in Blackwood:
FAQ
Rear extension planning drawings questions in Blackwood
Do you handle building control in Blackwood?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
Can you match the brick or stone on my Blackwood house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Are the drawings mine?
You can use them to get other quotes, subject to the terms.
Do I need a party wall agreement?
In Wales, usually yes if the extension is on or near a shared boundary or close to a neighbour's foundations. We serve the notices.
How long does a rear extension take to build in Blackwood?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
What postcode areas do you cover around Blackwood?
Including NP12, and the surrounding South Wales Valleys area.