Building on a corner plot or side garden in St Austell

Some homeowners only realise their side garden might be a building plot when a neighbour builds on theirs. Whether yours in St Austell could follow depends on its width, how houses are spaced along the road and whether a new drive would be safe, not just on how much spare land you have.

We look at all of that for free. If the plot works, you might sell it outright, sell it subject to planning or grant an option. Or you might keep it and have a home built, perhaps for a relative who wants to live next door rather than with you.

New detached brick house on a corner plot beside an older semi-detached house
Planning authority
Cornwall Council
Postcodes
PL25, PL26
Noon sun, 21 March
About 40°
Shadow from a 5 m eaves line
About 6.0 m
Planning plan
Local Plan
County
Cornwall

How it plays out in St Austell

Light is a real test on side plots because the new home sits so close to existing ones. In midwinter the noon sun in St Austell is only around 16° above the horizon, so even a modest roof can shade a neighbour’s side windows or garden for long periods.

Councils, including Cornwall Council, look at daylight and sunlight to existing homes when deciding applications. A lower eaves line, a hipped roof or a slightly wider gap at the side can make the difference, and we test those options before the drawings are finalised.

Section showing noon sun and shadows in St Austell: about 40 degrees on 21 March and 16 degrees on 21 December21 m21 Mar, noon: sun 40°, shadow 6.0 m21 Dec, noon: sun 16°, shadow 17.2 mExistingNew home
Noon sun in St Austell on 21 March sits about 40° above the horizon, so a typical two-storey eaves line (about 5 m) throws a shadow of roughly 6.0 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.

The next steps, locally

You stay in control after the appraisal. Selling means heads of terms in writing, read by your solicitor, before anything is signed. Building means survey and design ahead of a written quote. Whichever you choose, Cornwall Council receives the application and asks your neighbours for comments, and a decision on a single home often takes a few months, longer if the design needs amending.

  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. Design and planning

    We draw a home that sits in the street rather than fighting it, usually take pre-application advice, and submit the application. The council consults neighbours and decides; small schemes often take a few months.

Worth checking early

  • Losing a side garden or drive changes how your house works day to day, from parking to getting bins round the back.
  • A new drive close to a junction may not be acceptable to the highway authority, which can force a different layout.
  • Attaching a home to yours brings party wall, fire and sound separation work, and changes the feel of your own house.

St Austell: questions to ask

Is my St Austell 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.

Can you build a home beside my house in St Austell 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.

Will a new drive near the corner be allowed in St Austell?

Only if drivers would have a clear enough view of the road and the junction stays safe. The highway authority comments on this and controls new dropped kerbs. Drives very close to a corner are often resisted, so we check the position on site before designing.

Can I attach a new home to my house in St Austell?

Yes, where it suits the street, for example on the end of a semi-detached pair. It needs planning permission as a separate home, fire and sound separation under Building Regulations, and possibly a party wall agreement. We check whether attached or detached fits your road better.

Other options in St Austell

Corner and side plots near St Austell

Find out what your garden could become

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