Backland Development
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Building on a corner plot or side garden in Harpenden

If your house in Harpenden sits on a corner, or has a side garden much wider than its neighbours’, there may be room for a new home beside it. A home there would normally face the street with a frontage of its own. Planners call that infill, not backland, and it tends to make access and privacy simpler to resolve.

A free appraisal will tell you whether it’s realistic. Should the answer be yes, there are two paths: sell the plot while you stay in your home, or hold on to it and let us handle the design, the planning application and the build. Backland Development is new, part of the S&K Group, and if your plot isn’t right we’ll say so.

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New detached brick house on a corner plot beside an older semi-detached house
Planning authority
St Albans City and District Council
Postcodes
AL3, AL5
Noon sun, 21 March
About 38°
Shadow from a 5 m eaves line
About 6.4 m
Planning plan
Local Plan
County
Hertfordshire

Before you decide in Harpenden

A new home beside yours affects light to your side windows and your neighbour’s. Around the spring equinox, the noon sun over Harpenden climbs to roughly 38°, and a 5 m eaves line then casts a shadow close to 6.4 m long. By December the midday sun reaches only about 15°, so the same wall shades far more ground.

On a side plot that shadow may fall across your own flank wall or the neighbour’s garden. We model it for your actual plot, and adjust the footprint, roof shape or gap at the side so the new home doesn’t take more light than it should.

Section showing noon sun and shadows in Harpenden: about 38 degrees on 21 March and 15 degrees on 21 December21 m21 Mar, noon: sun 38°, shadow 6.4 m21 Dec, noon: sun 15°, shadow 19.0 mExistingNew home
Noon sun in Harpenden on 21 March sits about 38° above the horizon, so a typical two-storey eaves line (about 5 m) throws a shadow of roughly 6.4 m. In December the sun is only about 15° up and shadows stretch much further. Drawn for a garden facing north, where it matters most.

From first call to decision

An enquiry about a side plot in Harpenden can begin with a quick call and a couple of photos of the side of your house and the street. We follow up with a desktop appraisal and, if it’s promising, a site visit. If you sell, heads of terms come next and your solicitor takes over. If you build, we move to survey and design, then a written quote.

  1. Free plot appraisal

    We look at your plot on maps, the title plan and street views, check planning history nearby and talk it through with you. If a home beside yours looks possible we visit. No cost, no obligation.

  2. Read the street

    We measure the plot and record the building line, the gaps between houses, roof heights, materials and boundary walls, then check where a new drive could go and what drivers would be able to see from it.

  3. Choose your route

    Sell the plot outright, sell it subject to planning, or grant an option while you keep your house. Or keep the land and have us design, get planning for and build a new home on it.

  4. Sale or build

    For a sale, your solicitor handles the transfer of part and any release from your lender. For a build, a written quote follows design and survey, then we build, arrange the warranty and hand over.

Worth checking early

  • Attaching a home to yours brings party wall, fire and sound separation work, and changes the feel of your own house.
  • A new drive close to a junction may not be acceptable to the highway authority, which can force a different layout.
  • Corners kept open by design can be harder to build on than they look; character can matter more than space.

Questions about garden plots in Harpenden

Can you build a home beside my house in Harpenden for my family?

Yes. A home next door can give a parent or grown-up child their own front door while keeping them close. You keep the land; we draw the house, apply for permission, build it and arrange the structural warranty or other cover lenders accept. The written quote comes after design and survey.

Is my Harpenden side garden wide enough for a new house?

It depends on how wide homes are in your street, the gaps between them, whether the new home would be attached or detached and what the council’s design guidance says. There’s no single minimum width. We measure your plot and the street as part of a free appraisal.

Which body approves a new home on a side plot in Harpenden?

The planning decision belongs to St Albans City and District Council. It checks the proposal against the council’s Local Plan, national policy and its own design guidance, and asks neighbours and the highway authority for their views first. Our role is to prepare and submit a strong application; approval or refusal is the council’s call alone.

Can I build a house on my corner plot in Harpenden?

Possibly, if a new home would respect the building lines, keep the corner feeling open enough and allow safe visibility for drivers. It needs planning permission, and St Albans City and District Council decides. Our free appraisal tells you whether your corner is worth taking further.

Other options in Harpenden

Corner and side plots near Harpenden

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