Rhiwbina, Cardiff and the Vale
Rear extension planning drawings in Rhiwbina
We plan and build rear extensions for homeowners in Rhiwbina. Measured survey, design options, planning drawings and the application, handled for you. Start with a free site visit, then a written price once the design is agreed.
Rhiwbina is covered from our Cardiff and the Vale round, including CF14. For Rhiwbina homes we start with a measured survey, then draw options before anything is submitted.
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 Rhiwbina?
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 Rhiwbina?
Planning for a rear extension in Rhiwbina 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 Rhiwbina like to extend?
Older terraces near the centre and post-war semis further out are typical of Rhiwbina. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a rear extension in Rhiwbina comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Paperwork handled
Planning or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Rear extension planning drawings near Rhiwbina
Neighbouring places we cover include Whitchurch (1.2 miles) and Caerphilly (3.2 miles).
- Rear extension planning drawings in Whitchurch
- Rear extension planning drawings in Caerphilly
- Rear extension planning drawings in Cardiff
- Rear extension planning drawings in Penarth
- Rear extension planning drawings in Llantrisant
Other work in Rhiwbina:
FAQ
Rear extension planning drawings questions in Rhiwbina
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
How long does a rear extension take to build in Rhiwbina?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do neighbours get consulted?
Yes for a full application: the council writes to them or puts up a site notice.
Do you handle building control in Rhiwbina?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
Do I need planning permission for a rear extension in Rhiwbina?
Often not for a single-storey rear extension of up to 4 metres under Welsh permitted development. Wales has no prior approval route for deeper extensions.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.