- Planning authority
- Rhondda Cynon Taf County Borough Council
- Postcodes
- CF38, CF72
- Noon sun, 21 March
- About 38°
- Shadow from a 5 m eaves line
- About 6.3 m
- Planning plan
- LDP
- County
- Mid Glamorgan
How it plays out in Llantrisant
How the two households will live together shapes the planning case as much as the drawings do. If your parent will eat with you, share the garden and rely on you day to day, an annexe is the natural fit, and that is what Rhondda Cynon Taf County Borough Council will expect the application to describe. If your son or daughter will run their own home, pay their own bills and perhaps sell up one day, it is a separate dwelling and will be assessed against the council’s Local Development Plan (LDP) as a new house. For a family in CF38 and CF72, we help set that out clearly from the start.
The next steps, locally
Getting started in Llantrisant costs nothing. Send us a few photos of your garden and the way in, or simply call, and we’ll look at the plot from the desk and talk through your family’s plans. If there’s a realistic scheme, we arrange a site visit. Survey and design are quoted in writing before you commit, and the build price follows once the design is settled.
Free plot appraisal
We look at your plot, access and the planning picture from the desk, talk through who will live in the new home, and visit if it looks viable. There’s no cost and no obligation.
Annexe or separate home
We set out both routes for your plot, covering what each means for planning, ownership, council tax, CIL and VAT, so you can decide with your family and advisers before design starts.
Survey and design
A measured survey, then a design built around the person moving in: step-free routes, a ground-floor bedroom if needed and privacy for both households. You get a written quote after design and survey.
Planning and approvals
We prepare and submit the planning application and manage it with the council, which makes the decision. Before work starts, approval under the Building Regulations as they apply in Wales is in place and any CIL exemption has been claimed.
Worth checking early
- Family plans change: agree ownership, costs and what happens if circumstances change in writing, with a solicitor.
- VAT savings available on a separate dwelling often don’t apply to an annexe; take advice from a tax adviser before choosing.
- A separate home needs its own garden, parking, bins and access, so it needs more land than an annexe.
Llantrisant: questions to ask
Can I build a separate house in my Llantrisant garden for my son or daughter?
Possibly, if the plot can work as a home in its own right. Rhondda Cynon Taf County Borough Council will look at access, parking, garden space for both houses, privacy and the character of the street, as it would for any new house. If permission is granted, the plot can be transferred to your child with its own title, with your lender’s consent if the house is mortgaged.
Is CIL payable on a family home in Llantrisant?
Only if Rhondda Cynon Taf County Borough Council has adopted the Community Infrastructure Levy, which its website will confirm, and we check it for you during the appraisal. Where it applies, self-build and residential annexe exemptions exist, but both must be claimed before work starts and can be withdrawn if the home is sold or let within three years of completion.
Will an annexe in Llantrisant put up my council tax?
It might. Annexes can be banded separately, but exemptions exist for annexes lived in by certain dependent relatives, and in some cases a discount applies where family live there or the annexe is used as part of the main home. Who qualifies depends on the relative’s circumstances and how the annexe is used. Rhondda Cynon Taf County Borough Council’s council tax team can tell you how the rules apply to your household.
Can you design a home in Llantrisant for a relative who uses a wheelchair?
Yes. The design can include a level approach and threshold, turning space in each room, a wet room, wider doors and worktops at a usable height. Where Rhondda Cynon Taf County Borough Council requires a particular access standard through planning, the design meets it; otherwise it’s your choice how far to go. Input from your relative’s occupational therapist is well worth having.
Other options in Llantrisant
- Joint venture on your garden plot
- Sell part of your garden
- Planning permission for a garden plot
- Sell subject to planning
- Garden plot option agreement
- Planning promotion for your garden plot