Yes, in most cases you can extend a house in Maulden. Only 20 buildings in the village are listed, and none are in a conservation area. Unless your house is on that short list, ordinary planning rules apply and the extra heritage layer does not. The ground needs more attention than the paperwork does.
Historic England lists 20 buildings in Maulden. None are Grade I, one is Grade II* and 19 are Grade II. On a listed building, almost any change that affects its character needs listed building consent, inside as well as out, and that includes replacing windows. For the rest of the village, the listing register has no say. A parish that once quarried its own sandstone has kept very few old buildings that anyone is now required to protect.
Central Bedfordshire Council logged 1,196 planning applications for the area between April 2024 and June 2026, and 532 of them came in the last twelve months. That is the area's own planning record, and it shows homeowners here changing their houses all the time. The parish once plaited straw, and now its local craft is the planning application.
The ground is the real constraint. The British Geological Survey puts Maulden at class 3 for shrink-swell, and the whole village reaches that class. Shrink-swell means clay soil that swells when wet and shrinks when dry, so the ground under a building moves with the seasons. For an extension, that usually means deeper foundations than a builder would dig on firmer ground, and possibly more if there are mature trees nearby. Paying a structural engineer to assess the site before the builder quotes is cheaper than finding out after the walls crack. Building regulations treat clay as an engineering problem to solve, not a reason to refuse.
Because there is no conservation area, many single-storey rear extensions, loft conversions and outbuildings can go ahead under permitted development rights. Those rights are the national allowances that need no full planning application, within limits on size and height. Larger or two-storey extensions, and anything that faces the road, still need planning permission in the usual way. Newer estates sometimes have permitted development rights removed by a condition on the original approval. Ask Central Bedfordshire Council whether the house you want has had them removed, and do it while you can still renegotiate the price.
Your freedom to change a house in Maulden is one of the village's real strengths. Planning rules will rarely stop you, and the clay is the main thing to budget for.