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

For grown-up children in Farnworth, the step to a first home can be a long one. If your garden is big enough, a small separate house on part of it could become theirs: with its own planning permission and title, it can be mortgaged in their name and sold when they move on.

That asks more of the plot than an annexe does, including its own garden, parking and an access Bolton Metropolitan Borough Council will accept. We look at all of that in a free plot appraisal, then design and build the home if the scheme stacks up and you want to go ahead.

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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
Bolton Metropolitan Borough Council
Postcodes
BL3, BL4
Noon sun, 21 March
About 36°
Shadow from a 5 m eaves line
About 6.8 m
Planning plan
Local Plan
County
Greater Manchester

What shapes a plot in Farnworth

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 Farnworth is about 36° above the horizon, so a two-storey eaves line around 5 m high casts a shadow of roughly 6.8 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 13°, 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 Farnworth: about 36 degrees on 21 March and 13 degrees on 21 December21 m21 Mar, noon: sun 36°, shadow 6.8 m21 Dec, noon: sun 13°, shadow 21.6 mExistingNew home
Noon sun in Farnworth on 21 March sits about 36° above the horizon, so a typical two-storey eaves line (about 5 m) throws a shadow of roughly 6.8 m. In December the sun is only about 13° up and shadows stretch much further. Drawn for a garden facing north, where it matters most.

How we’d take it forward in Farnworth

The next step is a conversation, by phone or through the form, about your garden in Farnworth 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.

  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. 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.

  3. 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.

  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

  • CIL exemptions are lost if work starts before the claim is made, and can be withdrawn if the home is sold or let within three years.
  • 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.

Your questions, answered for Farnworth

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

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

How long will building work disrupt my home in Farnworth?

A single garden home usually takes several months on site, with the noisiest work, such as groundworks, drainage and heavy deliveries, concentrated near the start. We agree working hours, access and parking with you up front, and with the people next door where it affects them, so your household knows what each week will look like.

Can I reclaim VAT on a family annexe in Farnworth?

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.

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

Possibly, if the plot can work as a home in its own right. Bolton Metropolitan 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.

Other options in Farnworth

Family home in your garden near Farnworth

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