For most houses in Totland, yes. Seventeen buildings carry formal listed status, but the rest sit outside the heritage protection regime. There are no conservation areas covering the village. About a tenth of the wider area sits within an Area of Outstanding Natural Beauty. The freedom-to-alter picture is roughly average for a coastal village with this much heritage scattered through it.
Seventeen buildings inside the area carry formal listed status. One is Grade II. Sixteen are Grade II. Grade II is the second-highest grade in the system, reserved for buildings of particular national importance, and any change to the fabric of such a building requires listed building consent on top of the ordinary planning route. Grade II covers the bulk of the listing in almost any English village, including hotels, manors, churches and the older civic buildings that made it through the past century and a half. Among the named listed entries in the wider area are Afton Manor, Farringford Hotel, the Bugle Hotel and the parish church of All Saints, alongside coastal defence remains and older fort sites that carry protected status of their own. If a property is on the list, alterations to its character require permission separate from standard planning, and replacement of windows, doors, internal walls, chimneys or roof coverings is treated as a heritage matter rather than a homeowner choice. The threshold for what counts as character is set by national guidance and the local conservation officer's interpretation of it, and the two do not always align.
No part of Totland sits within a formal conservation area. For an unlisted home outside the immediate footprint of a listed neighbour, that absence is the single biggest source of design freedom an owner has in an English village this old. Six scheduled monuments fall within the wider boundary, mostly Bronze Age burial mounds on the surrounding downland and the remains of older coastal defence works. Their footprints are tightly bounded and rarely overlap with residential property, so the practical effect on a homeowner's extension plans in the inhabited part of the village is minimal. About a tenth of the area sits within the Isle of Wight Area of Outstanding Natural Beauty, which is a material planning consideration in any larger external alteration without being the blocker some buyers assume it is. For most houses, the usual permitted-development route is open: side and rear extensions within the standard envelope, loft conversions, outbuildings, hard standing, and the rest of the small interventions that do not need a full planning application. Anything larger, more visible, or close to a listed neighbour requires consent in the ordinary way, with the local authority weighing the design against its policy framework and the wider character of the village. The cost of getting the design wrong on first application is mostly delay rather than outright refusal.
For most homes in Totland, the freedom to extend is around average for a coastal village. The seventeen listed buildings live by stricter rules and the Area of Outstanding Natural Beauty adds a design weight to larger jobs, but for an unlisted property outside the heritage footprint the usual permitted-development route is open and a planning application is the standard route for anything bigger. The rest is what every English homeowner does: design carefully, apply when needed, and avoid the words "this is what we want, regardless" in any submission to a planning officer.