- Planning authority
- Blaenau Gwent County Borough Council
- Postcodes
- NP23
- Noon sun, 21 March
- About 38°
- Shadow from a 5 m eaves line
- About 6.4 m
- Planning plan
- LDP
- County
- Gwent
What the council will look at in Brynmawr
A measured survey is where a family home in Brynmawr stops being an idea and becomes a plan. We record boundaries, levels, trees, drains and the windows of your house and the houses next door, then test where the new building can sit. With the spring equinox sun standing near 38° at midday here, a 5 m eaves line throws a noon shadow close to 6.4 m; drawing that onto the survey shows which positions keep light in the main rooms of both homes. Blaenau Gwent County Borough Council will expect to see the same evidence with the application.
From first call to decision
The next step is a conversation, by phone or through the form, about your garden in Brynmawr and who the new home is for. We check access, title, the main planning constraints and any CIL position for your address, then tell you whether an annexe, a separate home or neither looks realistic. If neither does, we’ll say so and explain why.
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.
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.
Build and handover
We build while you carry on living next door, with access, deliveries and working hours agreed up front. At handover you get the completion certificate and the paperwork you’ll need for council tax, lenders and any VAT claim.
Worth checking early
- A separate home needs its own garden, parking, bins and access, so it needs more land than an annexe.
- VAT savings available on a separate dwelling often don’t apply to an annexe; take advice from a tax adviser before choosing.
- An annexe tied by planning condition usually can’t be sold or let separately, which limits flexibility later.
Brynmawr: questions to ask
Can you design a home in Brynmawr 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 Blaenau Gwent 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.
Who owns an annexe built in my Brynmawr garden?
You do. An annexe stays on the title of your house and usually carries a planning condition tying it to the main home, so it can’t be transferred to the relative living in it. If a family member is paying towards it, record what they’ve put in and what happens on a sale in a written agreement drawn up by a solicitor.
Do I need planning permission for a granny annexe in Brynmawr?
Yes, almost always for a detached annexe with its own kitchen, bathroom and bedroom. Blaenau Gwent County Borough Council will treat it as accommodation linked to your home and will usually add a condition so it can’t be let or sold separately. A garden building used only as a home office or gym is a different matter, but sleeping and cooking take it beyond those allowances.
Will an annexe in Brynmawr 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. Blaenau Gwent County Borough Council’s council tax team can tell you how the rules apply to your household.
Other options in Brynmawr
- Large rear gardens
- Plot feasibility and design
- Planning promotion for your garden plot
- Build a new home in your garden
- Garden plot option agreement
- Corner and side plots

