Southwold leads a coastal holiday-home shortlist compiled by estate-agency software provider Alto, based on the company’s analysis of sales data from agents using its platform.
Alto’s original published table compares 2016 with 2026. It reports Southwold’s average property value rising from £231,236 to £448,106, an increase rounded to 94%. Sandbanks follows at 93%, while Saltburn-by-the-Sea is third at 75%. The date range here follows Alto’s own table rather than the different years stated in some secondary coverage.
The company says it first shortlisted popular coastal holiday-home locations and then ranked them by percentage price growth. This is therefore a selected-location analysis using platform data, not a comprehensive official ranking of every seaside town. The published summary does not provide all the transaction counts and adjustments needed to assess how changes in the mix of homes affected each average.
Use the ranking to frame questions
A ten-year percentage can make an interesting starting point, but it cannot tell you what a particular home is worth today. Ask a local agent to explain recent comparable evidence for the property type, condition and immediate location you are considering. Keep asking prices separate from completed-sale evidence.
Also distinguish percentage growth from the amount of money involved. A location starting from a higher value can show a smaller percentage rise while still requiring a much larger purchase budget. Neither measure gives the likely return on a future purchase.
Build a property-specific plan
If the aim is holiday letting, prepare a separate operating budget. Ask about realistic occupancy, management, cleaning, maintenance, insurance and local restrictions. Test a quieter trading period rather than relying only on a best-season projection. Establish which assumptions come from actual evidence and which are estimates.
If the home is mainly for your own use, consider the practical fit as well as the price history: access, year-round services, upkeep and the costs of leaving it unoccupied. A place that looks strong in a ranking may still be wrong for your circumstances.
Alto’s analysis describes past changes within its chosen locations. It does not guarantee future appreciation, rental income or a profitable purchase. Use it as a research lead, then seek current local evidence and suitable professional advice before committing.
Source: Alto, The best places to buy a seaside holiday home in the UK: 2026 top 10, published 2 November 2026.