Build a home for family in your garden in Hertfordshire

Before anyone draws a plan, it pays to agree as a family what the new building is for. An annexe in Hertfordshire is usually tied to the main house by a planning condition, while a separate dwelling can be put in a relative’s name, mortgaged and sold later.

That choice changes the planning case, the tax position and how much land you need. We set the two side by side during a free plot appraisal, using what we can see of your plot and the planning context across Hertfordshire, then visit if it looks viable. On VAT and CIL in particular, get professional tax advice before you commit.

Single-storey garden home with wide glazed doors and a covered porch at the back of a family garden
Nation
England
National planning policy
NPPF
Planning authorities
10
City
St Albans

How councils in Hertfordshire look at it

Under the National Planning Policy Framework (NPPF), councils weigh the character of an area and the effect on neighbours when deciding whether a home can go in a garden, and the council’s Local Plan usually adds local detail. For a family home in Hertfordshire, that means the design has to suit its surroundings as well as the relative moving in. Single-storey buildings, careful window placement and boundary planting often help. Many councils use separation distances of around 21 metres between facing back windows, but your council’s own guide decides.

Planning authorities covering Hertfordshire include Broxbourne Borough Council, Dacorum Borough Council, East Hertfordshire District Council, Hertsmere Borough Council, North Hertfordshire District Council, St Albans City and District Council, Stevenage Borough Council, Three Rivers District Council, Watford Borough Council, Welwyn Hatfield Borough Council.

How it works

  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.

  5. 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.

Family home in your garden in towns across Hertfordshire

Questions about family home in your garden in Hertfordshire

Can I build a separate home for my child in Hertfordshire?

Yes, where the plot is big enough to function as an independent home and the council grants permission. It needs its own access, garden, parking and bin store, and must not unduly harm neighbours’ privacy or light. Once approved, the plot can be given its own title, so your child can own it and, if they need to, mortgage it.

How long does planning take for an annexe in Hertfordshire?

Usually a few months from a valid application, though it varies between councils and with how many changes are needed. Applications that draw objections or need extra reports take longer. Pre-application advice adds time at the start but often saves it later by flagging problems before you apply.

Is CIL charged on family homes in Hertfordshire?

Some councils charge the Community Infrastructure Levy and some don’t, so it depends where your house is. Where it applies, a self-build exemption and an exemption for residential annexes are available, but they must be claimed before work starts on site, together with a commencement notice. We check the position for your address during the free appraisal.

Do you buy garden plots in Hertfordshire?

Yes. We buy suitable garden plots across Hertfordshire directly, with or without planning permission, always subject to survey, title and contract. We also offer sales subject to planning, options, planning promotion and joint ventures. Which route fits depends on your plot, so the starting point is a free, no-obligation appraisal.

Other options in Hertfordshire

Everything we cover in Hertfordshire

Find out what your garden could become

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