Backland Development
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Build a home for family in your garden in Lewes

Bringing an elderly parent to live beside you in Lewes often feels like the obvious answer, until you look at what the house can offer. A spare room up a flight of stairs rarely suits someone whose mobility is failing. A purpose-built single-storey home in the garden can.

We offer design and build of garden homes for family across East Sussex, with no steps to climb, a bedroom at ground level and a walk-in shower built in from day one. Planning goes through South Downs National Park Authority, and we prepare and manage the application for you. Start with a free plot appraisal and we’ll tell you honestly whether your garden looks suitable.

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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
South Downs National Park Authority
Postcodes
BN7
Noon sun, 21 March
About 39°
Shadow from a 5 m eaves line
About 6.1 m
Planning plan
Local Plan
County
East Sussex

What the council will look at in Lewes

Daylight matters twice over when the new home is for a relative who spends much of the day indoors. At noon on 21 March the sun in Lewes is about 39° above the horizon, so a two-storey eaves line around 5 m high casts a shadow of roughly 6.1 m. A single-storey annexe with eaves at half that height casts one about half as long, which is one reason low buildings often sit more easily in a garden. By late December the midday sun climbs only about 16°, so we test winter light on both homes, and on next-door gardens, before the layout is fixed.

Section showing noon sun and shadows in Lewes: about 39 degrees on 21 March and 16 degrees on 21 December21 m21 Mar, noon: sun 39°, shadow 6.1 m21 Dec, noon: sun 16°, shadow 17.8 mExistingNew home
Noon sun in Lewes on 21 March sits about 39° above the horizon, so a typical two-storey eaves line (about 5 m) throws a shadow of roughly 6.1 m. In December the sun is only about 16° up and shadows stretch much further. Drawn for a garden facing north, where it matters most.

How we’d take it forward in Lewes

From first call to keys, a family home in Lewes follows a clear order. Free appraisal and site visit; measured survey and design around the person moving in; a planning application to South Downs National Park Authority; approval under the Building Regulations and any CIL exemption claimed before work starts; then the build, with you living next door throughout. You receive a written quote after design and survey, and we keep the household updated at each stage.

  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. 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

  • 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.
  • An annexe tied by planning condition usually can’t be sold or let separately, which limits flexibility later.

Questions about garden plots in Lewes

Can I build a separate house in my Lewes garden for my son or daughter?

Possibly, if the plot can work as a home in its own right. South Downs National Park Authority 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.

Who owns an annexe built in my Lewes 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.

Can you design a home in Lewes 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 South Downs National Park Authority 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.

Is CIL payable on a family home in Lewes?

Only if South Downs National Park Authority 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.

Other options in Lewes

Family home in your garden near Lewes

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