- Planning authority
- Borough Council of King's Lynn and West Norfolk
- Postcodes
- PE38
- Noon sun, 21 March
- About 37°
- Shadow from a 5 m eaves line
- About 6.5 m
- Planning plan
- Local Plan
- County
- Norfolk
How it plays out in Downham Market
People living next door are consulted on every planning application, and across PE38 that applies to a family annexe just as much as to a new house. Their privacy, outlook and light carry real weight with Borough Council of King’s Lynn and West Norfolk. A design that keeps upper windows away from adjoining gardens, uses obscure glazing where it has to, and leaves a planted margin along the boundary gives the council fewer reasons to refuse. A quiet word with the people either side before the application goes in is often worthwhile too.
From first call to decision
Getting started in Downham Market 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 is in place and any CIL exemption has been claimed.
Worth checking early
- A separate home needs its own garden, parking, bins and access, so it needs more land than an annexe.
- CIL exemptions are lost if work starts before the claim is made, and can be withdrawn if the home is sold or let within three years.
- Family plans change: agree ownership, costs and what happens if circumstances change in writing, with a solicitor.
Questions about garden plots in Downham Market
How much garden do I need for a family home in Downham Market?
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 Borough Council of King’s Lynn and West Norfolk 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.
Can I build a separate house in my Downham Market garden for my son or daughter?
Possibly, if the plot can work as a home in its own right. Borough Council of King’s Lynn and West Norfolk 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.
Do I need planning permission for a granny annexe in Downham Market?
Yes, almost always for a detached annexe with its own kitchen, bathroom and bedroom. Borough Council of King’s Lynn and West Norfolk 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.
Who owns an annexe built in my Downham Market 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.
Other options in Downham Market
- Sell part of your garden
- Sell subject to planning
- Build a new home in your garden
- Planning promotion for your garden plot
- Plot feasibility and design
- Combine gardens with your neighbours

