Backland Development
0800 088 6248Free to call Free plot appraisal

Build a home for family in your garden in Mildenhall

The first question for any family in Mildenhall thinking about building in the garden is usually this: annexe or proper house? The answer turns on the person moving in, how long they’re likely to stay, and whether you might ever want to sell or let the building on its own.

An annexe is used with your home and usually tied to it by condition. A separate dwelling stands alone, with its own permission and potentially its own title. West Suffolk Council assesses them on different terms, and council tax, CIL and VAT rules split along the same line. Our free plot appraisal sets out both, so you can decide with your family and your advisers.

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Single-storey garden home with wide glazed doors and a covered porch at the back of a family garden
Planning authority
West Suffolk Council
Postcodes
IP28
Noon sun, 21 March
About 38°
Shadow from a 5 m eaves line
About 6.5 m
Planning plan
Local Plan
County
Suffolk

Mildenhall: light, access and policy

West Suffolk Council will judge a family home against the council’s Local Plan and any guidance it has adopted on garden development and annexes. Some councils spell out how closely an annexe must relate to the main house, such as sharing the drive, garden or parking, and what turns a building into a separate home instead. We read the current policies for your address before design starts, because a scheme drawn to suit the wrong test wastes time and money. Where the position is unclear, the council’s pre-application advice can be worth its fee.

Section showing noon sun and shadows in Mildenhall: about 38 degrees on 21 March and 14 degrees on 21 December21 m21 Mar, noon: sun 38°, shadow 6.5 m21 Dec, noon: sun 14°, shadow 19.7 mExistingNew home
Noon sun in Mildenhall on 21 March sits about 38° above the horizon, so a typical two-storey eaves line (about 5 m) throws a shadow of roughly 6.5 m. In December the sun is only about 14° up and shadows stretch much further. Drawn for a garden facing north, where it matters most.

From first call to decision

Getting started in Mildenhall 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.

  1. 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.

  2. 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.

  3. 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.

  4. 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 is in place and any CIL exemption has been claimed.

Worth checking early

  • Planning is the council’s decision, and an annexe is not a way round the rules that apply to a new house.
  • 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.

Questions about garden plots in Mildenhall

Is CIL payable on a family home in Mildenhall?

Only if West Suffolk 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.

Can I reclaim VAT on a family annexe in Mildenhall?

Often not. HMRC’s guidance gives an annexe that can’t be used or sold separately from the main house as an example of work that can’t be zero-rated, and the DIY housebuilders refund scheme asks the same question. A separate dwelling is usually treated differently. Take advice from a tax adviser before you settle the planning route, because the wording of the permission matters.

How much garden do I need for a family home in Mildenhall?

There’s no fixed figure. A single-storey annexe close to the house can work on a smaller plot than a separate dwelling, which needs its own garden, parking and access. What matters is whether West Suffolk Council can be satisfied on privacy, daylight and the space left for both homes. The free appraisal gives you a first view based on your plot’s actual shape and access.

Do I need planning permission for a granny annexe in Mildenhall?

Yes, almost always for a detached annexe with its own kitchen, bathroom and bedroom. West Suffolk 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.

Other options in Mildenhall

Family home in your garden near Mildenhall

Find out what your garden could become

Free garden plot appraisal. No cost, no obligation, and a straight answer if it won’t work.

Get my free appraisal 0800 088 6248