Yes, and plenty of people here already are. The listing burden is concentrated rather than spread across the town. There is one conservation area, not a patchwork of them. Nothing in the area carries the highest listing grade at all. Dawlish reads as a heritage town from the seafront and behaves like an ordinary one from the back garden.
Historic England's register carries 91 listed buildings across the area: 2 at grade two star and 89 at grade two, with none at grade one. If your house is one of them, listing covers the whole building rather than the pretty side facing the street, and changes to windows, roof coverings, internal walls and layout need listed building consent alongside any planning permission. The process is less interested in whether your sash window is rotten than in what you intend to put back, which is where most owners discover that the cheap quote was quoting for a different house.
There is one conservation area covering part of the town. Inside it, permitted development is narrower than it is elsewhere and more work needs an application, with the detail set locally rather than by anything you can settle from a forum post. That is a phone call to the council before you commission drawings, not after.
The useful evidence is what everybody else is doing. The planning register recorded 365 applications across the area between April 2024 and June 2026, with 138 of them falling in the most recent twelve months of that window. Whatever the constraints look like on paper, this is a town where people are extending, converting and altering at a steady clip rather than one where owners have quietly given up.
Practically, the town splits into two experiences. Off the register and outside the conservation area, which describes most of Dawlish, the normal permitted development rules apply and a rear extension or a loft conversion is a conversation with a builder rather than a planning officer. On the register or inside the conservation area, everything gets slower, the materials get specified for you, and the cost per square metre stops resembling the quote your friend got inland.
Freedom to alter a house here sits in the middle of the range: real for most buyers, genuinely constrained for a minority, and easy to establish before you offer. Check which of the two houses you are buying, because the difference does not show up in the listing photographs.