Backland Development
0800 088 6248Free to call Free plot appraisal

Build a new home in your garden in Portsmouth

A new home in your Portsmouth garden can be built to sell, to let or for someone in the family, and the right design differs for each. A home for sale needs its own title, a structural warranty for buyers’ lenders and a layout with wide appeal. A family home might put level access or a shared garden gate first.

We talk that through at the start, because it changes the size, the specification and the legal set-up. From there we take the plot through design, planning, approvals and construction, handing over a finished home with its certificates and warranty documents.

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Timber-frame house under construction with scaffolding at the bottom of a back garden, seen from the patio
Planning authority
Portsmouth City Council
Postcodes
PO1, PO2, PO3, PO4, PO5
Noon sun, 21 March
About 39°
Shadow from a 5 m eaves line
About 6.1 m
Planning plan
Local Plan
County
Hampshire

Before you decide in Portsmouth

Construction on a Portsmouth garden plot runs to a programme agreed once Portsmouth City Council has issued permission and any pre-commencement conditions have been dealt with. Groundworks and foundations come first; the shell and roof follow, then glazing, internal trades and, last of all, the drive and planting.

Weather matters. Around 21 December the sun in Portsmouth climbs to only about 16° at midday, so winter days are short and wet ground slows the work. Where we can, we order the job so the house is weathertight before the worst months arrive.

Section showing noon sun and shadows in Portsmouth: 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 17.7 mExistingNew home
Noon sun in Portsmouth 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.

What happens next in Portsmouth

Getting started in Portsmouth takes one step from you: send your address and a few photos of the garden, or call us. We check the title plan, access and planning constraints from our desk, then talk the plot through. If it looks viable we arrange a visit, discuss whether you want to sell, let or keep the new home, and set out the survey and design stage in writing before you commit.

  1. Free plot appraisal

    We check the title plan, access, constraints and planning policy from our desk, talk the plot through with you, and visit if it looks viable. There’s no cost and no obligation.

  2. Planning and approvals

    We submit the planning application and manage it to a decision, then deal with conditions, Building Regulations approval, the structural warranty, any build-over agreement and the new utility connections.

  3. Written quote and build

    Once design and survey are complete you get a written quote. The build runs in stages — access and groundworks, foundations, frame and roof, fit-out and external works — with inspections at each key point.

  4. Handover

    You receive the completion certificate, warranty documents, Energy Performance Certificate, manuals and utility details, so the new home is ready to move into, let or put on the market.

Worth checking early

  • Building and selling a new home can change your tax position compared with selling only your house; take advice from a tax adviser first.
  • You fund the build and carry the cost risk; ground conditions, sewer diversions or supply upgrades found later can move the price.
  • Your own garden gets smaller and the new home will be visible from your house, so screening and separation matter for both homes.

Questions about garden plots in Portsmouth

Do you visit gardens in Portsmouth before giving advice?

We start with a desk review of the title plan, access, constraints and planning policy, then talk the plot through with you. If it looks viable, we arrange a site visit to see the access, levels, trees and neighbouring windows for ourselves. The appraisal is free and carries no obligation.

Do new homes in Portsmouth need a structural warranty?

If the house will ever be sold or mortgaged, in practice yes. Mortgage lenders usually expect a 10-year structural warranty on a new home, though some accept an architect’s or surveyor’s certificate, and a warranty provider inspects the work at stages during the build, so it has to be in place before construction starts. Building control approval is separate and also required; a buyer’s solicitor will ask for both.

Will I pay Community Infrastructure Levy on a new home in Portsmouth?

Only if Portsmouth City Council has adopted a Community Infrastructure Levy charging schedule; not every council has. Where it applies, it can be charged on a new home of any size. A self-build exemption exists for people building a home to live in, but it must be claimed before work starts, so we check the position at design stage.

Can I build a house in my Portsmouth garden and then sell it?

Yes. You keep the land while the home is built, then sell the finished house. Before building starts, the plot should be given its own title through a transfer of part at HM Land Registry, and if your house is mortgaged your lender must agree to release the plot. Selling a home you’ve built can change your tax position, so take advice from a tax adviser first.

Other options in Portsmouth

Build in your garden near Portsmouth

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

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