- Nation
- Wales
- National planning policy
- Planning Policy Wales
- Planning authorities
- 2
- City
- Cardiff
How councils in South Glamorgan look at it
Garden schemes in South Glamorgan are read against the council’s Local Development Plan (LDP) and the council’s supplementary planning guidance and Technical Advice Note 12 on design, and wording differs between authorities, so a layout approved in one place may need rethinking elsewhere. Common themes are the height of the new home compared with its neighbours, the gap between facing windows, the size of the gardens left behind, and whether the plot follows the established pattern of the street. Paid pre-application advice can be worthwhile where policy is strict or the plot is unusual in shape.
Planning authorities covering South Glamorgan include Cardiff Council, Vale of Glamorgan Council.
How it works
Free plot appraisal
We check the title plan, access, constraints and planning policy from our desk, talk the plot through with you, and visit if it looks viable. There’s no cost and no obligation.
Survey and design
A measured survey records levels, boundaries, trees and neighbouring windows. We then design a layout and house that suit the plot, the street and your budget, and decide whether pre-application advice is worth seeking.
Planning and approvals
We submit the planning application and manage it to a decision, then deal with conditions, Building Regulations approval, the structural warranty, any build-over agreement and the new utility connections.
Written quote and build
Once design and survey are complete you get a written quote. The build runs in stages — access and groundworks, foundations, frame and roof, fit-out and external works — with inspections at each key point.
Handover
You receive the completion certificate, warranty documents, Energy Performance Certificate, manuals and utility details, so the new home is ready to move into, let or put on the market.
Build in your garden in towns across South Glamorgan
Questions about build in your garden in South Glamorgan
Who decides garden house applications in the South Glamorgan area?
Applications in South Glamorgan are decided by the local planning authority for the address (authorities here include Cardiff Council and Vale of Glamorgan Council), using its LDP alongside PPW. Design guidance, validation lists and pre-application services can differ from one authority to another. We confirm the right one for your address during the free appraisal and prepare the application to its requirements.
What fire safety rules affect a garden house in the South Glamorgan area?
Building control will look for sprinklers, which every new home in Wales must have. On plots reached by a long or narrow drive this often shapes the layout, so we settle the fire strategy during design rather than after planning. Bin storage distances, access width and turning space are checked at the same stage, because each one can move the house.
Do South Glamorgan planning rules allow new homes in back gardens?
There’s no blanket ban. National policy in Wales (PPW) and the local LDP set the tests: access, character, privacy, daylight, garden space, trees, parking and drainage. A home that respects the street and its neighbours has a fair hearing; one squeezed onto too small a plot is likely to struggle. Even a well-designed scheme depends on the council’s decision.
Do I need my own solicitor to sell a plot in South Glamorgan?
Yes, always. Your solicitor checks the contract, deals with the transfer of part at HM Land Registry and asks your mortgage lender to release the plot if the house is mortgaged. On option and promotion agreements we cover your reasonable legal fees, with the cap agreed in heads of terms before work starts.
Other options in South Glamorgan
- Joint venture on your garden plot in South Glamorgan
- Planning permission for a garden plot in South Glamorgan
- Build a home for family in your garden in South Glamorgan
- Combine gardens with your neighbours in South Glamorgan
- Corner and side plots in South Glamorgan
- Plot feasibility and design in South Glamorgan

