Yes, you can extend a house in Chiddingfold, but plenty of homes come with conditions attached. The village has dozens of listed buildings. Two conservation areas cover parts of it. Hundreds of planning applications go in every year. People do extend here, and nearly all of them fill in forms first.
Chiddingfold has 42 listed buildings: one at Grade I, two at Grade II* and 39 at Grade II. For those homes, listed building consent is needed for almost any change that affects the building's character, inside or out, on top of any planning permission. Grade II is the most common grade and the one most homeowners will deal with. It still covers windows, doors, internal walls and the roof. Working on a listed building without consent is a criminal offence. When a listing describes a house as "brimming with period features", every one of those features comes with conditions.
There are two conservation areas, Chiddingfold and Northbridge, Chiddingfold. Inside them, the council pays closer attention to anything visible from the street. Demolition, some extensions, cladding and work to trees can all need consent that a house outside the boundary wouldn't. The whole village also sits inside the Surrey Hills Area of Outstanding Natural Beauty. That means planners judge any proposal against a protected landscape, not just against the house next door.
None of this stops people applying. Between April 2024 and June 2026 there were 904 planning applications in the area, 403 of them in the last twelve months. That's plenty of kitchens, garden rooms, loft conversions and garage conversions going through the system. What these figures can't tell you is how many were approved, so treat them as evidence that people try, not as a success rate.
In practice, check three things before you plan anything: whether the house is listed, whether it's inside a conservation area, and whether earlier owners already used up any automatic rights to extend. A house that's neither listed nor in a conservation area may be able to do a modest rear extension or loft conversion under permitted development, the automatic rights that don't need a full application. A listed house almost certainly can't. Don't take the estate agent's "scope to extend, subject to planning" at face value. Look up the house's planning history and speak to the council before you exchange, not after.
Your freedom to extend in Chiddingfold is middling. Ordinary houses outside the conservation areas can usually be extended with a normal application. Anything listed or on the historic streets needs patience, paperwork and a sympathetic architect.