Yes, and with unusually little standing in the way. Eight listed buildings in the entire area. One conservation area. The overwhelming majority of homes here carry no heritage designation at all. What complicates an extension in Barton on Sea is not the planning department. It is what your foundations are sitting in.
Start with the listings, because they are the constraint people assume is worse than it is. Historic England records eight listed buildings across the area, and all eight are Grade Two. None are Grade One and none are Grade Two star, so there is no nationally exceptional building here to organise a planning policy around. If you happen to buy one of the eight, listed building consent applies to anything affecting the building's character, inside as well as out, and that includes work most owners think of as maintenance. If you buy any of the rest, which is almost everybody, none of that applies to you.
There is one conservation area, Old Milton Green. Designation brings tighter control over demolition and over trees, and councils can attach directions that strip out some permitted development rights within the boundary. Anyone buying inside it should ask the council which specific controls are in force rather than assume the standard national rules apply. Outside that boundary, the heritage layer is effectively absent.
The neighbours are not waiting for permission to be fashionable. The planning register shows 389 applications across the area between April 2024 and July 2026, with 165 of those in the last twelve months. That is a working stream of householder activity in a village of this size, which tells you the practical answer to the question better than any policy document: people here alter their homes routinely, and the process is a normal one.
The genuine constraint is underneath. The British Geological Survey classifies shrink-swell hazard here at class 3, and that classification covers 100% of the area. Class 3 means ground that expands and contracts with moisture, which is a foundation-depth question rather than a reason to abandon the project. It affects how deep you dig, how you handle nearby trees, and whether your builder's standard detail is adequate. Get a structural engineer to look at the ground before anyone prices the job, not after the trench is open. Every other geological hazard the survey measures for the area, including landslides, compressible ground, collapsible deposits, soluble rocks and running sand, sits at the lowest class.
In practical terms, most homes here can be extended under permitted development rights without a full planning application, subject to the usual national limits on size, height and how close you build to a boundary. The stock shapes what that means. Bungalows make up about 42% of every dwelling on the council tax valuation list and detached houses another 25%, so the typical project here is a single-storey addition or a loft conversion on a decent plot rather than a squeeze into a terrace. Plot size is generally on your side. The rules that will actually bite are the standard ones, plus whatever the ground survey says about depth.
Freedom to alter a home is one of this area's quieter strengths. The paperwork is light, the precedent is plentiful, and the only serious question anyone needs answered before starting is how far down the concrete has to go.