- Planning authority
- Spelthorne Borough Council
- Postcodes
- TW16, TW17
- Noon sun, 21 March
- About 39°
- Shadow from a 5 m eaves line
- About 6.3 m
- Planning plan
- Local Plan
- County
- Surrey
The local picture in Sunbury-on-Thames
Access is where most garden plots stand or fall, in Sunbury-on-Thames as anywhere. We measure every possible route in, whether a side drive, a gap left by a garage, a back lane or a shared way, and check its width, the sightlines onto the street, and the bin and emergency routes. Plots differ from one street to the next, so there is no standard answer for homes in TW16 and TW17. If the way in passes over someone else’s land, the title check shows whether a right of way exists, and Spelthorne Borough Council’s highway advice shows what standard the route must meet.
What happens next in Sunbury-on-Thames
Here’s how feasibility starts in Sunbury-on-Thames. You tell us about the plot, by phone or through the form, and we carry out a free desktop appraisal of access, title plan and planning context. If it looks viable we visit. If you want to go further, we send a written scope and quote for survey, constraints check and capacity study, and nothing starts until you agree.
Free plot appraisal
A desktop look at your plot, access, title plan and the planning picture, plus a conversation about what you want. If it looks viable we visit. There’s no cost and no obligation at this stage.
Access and capacity study
We test each workable route in and the number, size and position of homes the plot could hold, against separation distances, garden space, parking, bins and daylight for neighbours.
Concept designs and pre-application
Sketch layouts and simple elevations for the strongest options. Where it will help, we take one to the council for pre-application advice before anything is submitted.
Feasibility report and options
A clear yes, no or maybe, the reasons behind it, and the routes open to you: apply for planning, build, sell or partner. You decide what happens next, with no obligation to use us for it.
Worth checking early
- Pre-application advice is not binding, and the council’s decision on a formal application can still differ.
- A capacity figure is not a value; what a plot is worth depends on location, size, access and planning.
- Title problems such as covenants, ransom strips or missing rights of way can take time and money to resolve.
Your questions, answered for Sunbury-on-Thames
Is my Sunbury-on-Thames garden in a flood zone or conservation area?
Both are public information. Flood zones are shown on the flood maps for planning in England, and Spelthorne Borough Council publishes its conservation area boundaries and the listed buildings in its area. We check these as part of the free appraisal, along with Tree Preservation Orders, because each one changes what a scheme needs to show.
What if my Sunbury-on-Thames garden plot fails the feasibility check?
Then you know before spending money on a planning application, and you know why. Sometimes a smaller scheme, an annexe, or working with the neighbours next door changes the answer, and we will say if so. If nothing does, you keep the survey and the report for the future. You are under no obligation to us either way.
How many homes could fit in my garden in Sunbury-on-Thames?
That is what a capacity study answers. It tests options against separation distances from neighbours, garden space for each home, parking, bins and access, as well as the policies Spelthorne Borough Council applies. For many gardens the answer is one home; larger or combined plots can sometimes take more. We show the options on drawings so you can see why.
How much does a feasibility study cost in Sunbury-on-Thames?
It depends on the plot. A simple garden with a clear drive needs less work than one with protected trees, a flood zone or a complicated title. The first appraisal is free. After that we set out the scope and the price in writing, and you choose whether to go ahead before anything is commissioned.
Other options in Sunbury-on-Thames
- Build a home for family in your garden
- Planning promotion for your garden plot
- Garage courts and yards
- Build a new home in your garden
- Tandem and landlocked plots
- Corner and side plots

