Backland Development
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Build a new home in your garden in Machynlleth

Building a second home behind your own in Machynlleth is a construction project with one unusual feature: you live beside the site from the first spade to the last coat of paint. That shapes how we plan it, from the fence that separates your garden on day one to where deliveries park.

The route covers everything between an idea and a finished house. We survey and design, prepare and submit the planning application, arrange Building Regulations approval and the structural warranty, organise new water, drainage and electricity connections, and then build. You keep ownership of the land throughout.

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Timber-frame house under construction with scaffolding at the bottom of a back garden, seen from the patio
Planning authority
Powys County Council
Postcodes
SY20
Noon sun, 21 March
About 37°
Shadow from a 5 m eaves line
About 6.5 m
Planning plan
LDP
County
Powys

Before you decide in Machynlleth

In Machynlleth, applications for a new home in a garden are decided by Powys County Council, which weighs them against the council’s Local Development Plan (LDP) and national policy. Officers look at access, privacy, daylight, parking, bins, drainage and how much garden is left for each house, and neighbours can comment during consultation.

We read the local policies and any design guidance before drawing a line, and check the planning history of nearby plots for decisions that show how the council has applied them. If the policy picture is uncertain, pre-application advice lets us test the scheme with officers before the formal application goes in.

Section showing noon sun and shadows in Machynlleth: about 37 degrees on 21 March and 14 degrees on 21 December21 m21 Mar, noon: sun 37°, shadow 6.5 m21 Dec, noon: sun 14°, shadow 20.1 mExistingNew home
Noon sun in Machynlleth on 21 March sits about 37° above the horizon, so a typical two-storey eaves line (about 5 m) throws a shadow of roughly 6.5 m. In December the sun is only about 14° up and shadows stretch much further. Drawn for a garden facing north, where it matters most.

From first call to decision

From appraisal to a decision from Powys County Council, each step in Machynlleth is agreed before it starts. After the site visit we quote for survey and design; after design we prepare the application; after permission we deal with conditions and technical approvals and give you a written build quote. Each stage is a separate decision for you, with its cost set out first.

  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. Survey and design

    A measured survey records levels, boundaries, trees and neighbouring windows. We then design a layout and house that suit the plot, the street and your budget, and decide whether pre-application advice is worth seeking.

  3. 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.

  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

  • Planning can be refused, and money spent on surveys, design and the application isn’t recovered if it is — which is why we start with an appraisal.
  • A build next door means months of noise, deliveries and contractors near your home; good planning reduces the disruption but doesn’t remove it.
  • You fund the build and carry the cost risk; ground conditions, sewer diversions or supply upgrades found later can move the price.

Questions about garden plots in Machynlleth

Can I build a house in my garden in Machynlleth and keep the land?

Yes. On our design and build route you remain the owner while we design the home, apply to Powys County Council for planning, deal with Building Regulations and build it. The finished house can be sold, let or kept for family. Whether your plot can take a house depends on access, space, neighbours and local policy, and the decision rests with the council.

How close can a new house be to my own in Machynlleth?

There’s no single national distance. Many councils use separation guides of around 21 metres between facing back windows and around 12 to 15 metres between a back window and a blank side wall, but the guidance used by Powys County Council decides. Window positions, ground levels, roof shape and screening all affect what is acceptable, which is why we survey before we design.

How long does planning take for a new home in a Machynlleth garden?

The statutory period for deciding a minor application, such as a single new home, is 8 weeks from the date the council receives a valid application, in both England and Wales. In practice many applications take longer, and the council may ask you to agree an extension in writing. Surveys and design before submission add time, and conditions may need approving afterwards.

Can I build a house in my Machynlleth 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 Machynlleth

Build in your garden near Machynlleth

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