Slate terraces, boarding houses and the roof lift
Blackpool went from about 2,500 people in 1851 to 47,000 by 1901, once the railway arrived from Poulton. Much of what got built in that rush was brick terraces under Welsh slate, many of them lodging houses for working-class holidaymakers. You can still see the type in Foxhall and on streets like Adelaide Street, Leopold Grove and South King Street in the town centre.
Walk those streets and you will spot a lot of flat-topped extra storeys stuck on the roofs. Locally these are called roof lifts, and they were how guesthouse owners squeezed in more letting rooms. The council has gone off them. Its conservation area appraisal for the town centre says new or additional roof lifts will not be supported, and its older holiday accommodation guidance said they would not normally be permitted outside the main holiday areas. If you were picturing a full box across the top of your house, that history is why a planning officer may push back.
Dormers get a warmer reception. Blackpool shares an Extending Your Home guide with Fylde and Wyre councils, and it asks for a dormer to sit well inside the roof, below the ridge and above the gutter, clad in slate or tile to match, and normally covering no more than 35% of that roof slope. That rule bites only when you need permission. But it tells you what the planners think looks right.
Picking a conversion that suits a Blackpool house
Inner Blackpool has the town's highest share of terraces and flats, and detached houses are thinner on the ground here than in the rest of the Fylde coast. That shapes what most people end up building.
Rear dormer. The usual choice on a Victorian or Edwardian slate terrace. On a terrace the permitted development limit is 40 cubic metres, and anything on the front slope facing the road needs an application.
Rooflights only. Fine on many streets, and the gentlest option on a slate roof. Not in Raikes Hall, though. Its Article 4 direction covers rooflights and roof coverings, so even a single window in the slope needs permission there.
Hip to gable. Suits the 1920s and 1930s semis with hipped roofs you find in parts of Layton. Those roofs are often red clay tile, and the new gable wall has to look at home beside the neighbour's hip.
Read our full guide: Hip-to-Gable Loft Conversions: What It Involves and Which Houses It Suits →
L-shaped dormer. Only works if your terrace has a back addition to build over. Where it does, the second section is the natural place for a shower room.
Mansard. Always a planning application, and in Blackpool it is the one most likely to be read as a roof lift by another name. Talk to the planners before you pay for drawings.
Extra bedroom. The usual reason for doing it. Plan the staircase first, because on a narrow terrace it decides where the bedroom door can go on the floor below.
En-suite. Easiest where the soil pipe already runs up the back wall. Moving it across a terrace roof is where the plumbing gets awkward.
Home office. A small rear dormer or a pair of rooflights is usually enough for a desk. You don't need full standing height across the whole floor for a room you sit in.
Read our full guide: Loft Home-Office Conversion: What Works Well Up There and What to Specify →
Planning. Outside the conservation areas, most rear dormers go through as permitted development. Inside any of them, a dormer needs permission. Raikes Hall and Stanley Park have extra controls on top.
Cost. We don't print a Blackpool price. A slate terrace, a tiled interwar semi and a big Stanley Park house are three different jobs, and only a site visit tells you which one you have.
Seven conservation areas, two with tighter roof rules
Blackpool has seven conservation areas: the Town Centre, Stanley Park, Foxhall, Raikes Hall, Marton Moss, North Promenade and Layton, the newest. In all of them a dormer needs planning permission, because national permitted development rules don't allow roof extensions in conservation areas.
Raikes Hall goes further. Since June 2020 its Article 4 direction has removed rights for roof additions, other roof alterations including rooflights and roof coverings, chimneys and soil pipes, and solar panels. Round Stanley Park, where Thomas Mawson's firm laid out the streets in the 1920s, an Article 4 direction has applied since 1984 and the council says it covers roofs. Those houses carry Westmorland slate and some unusual curved roof shapes, so expect the conservation team to look closely.
A tip from the appraisals. In Foxhall the council lists concrete tiles replacing Welsh slate as one of the things harming the area. If your dormer means stripping part of a slate roof, keep and reuse the slate.
Who signs it off
Building control is Blackpool Council's own team (building.control@blackpool.gov.uk). They inspect the roof structure before the plasterboard goes on and check the steels, then issue a completion certificate at the end. Keep it, because a buyer's solicitor will want it. For planning questions the council runs a duty line, and every past decision on your street is on the council's online register.
One boundary point catches people out. Lytham St Annes is Fylde council and Cleveleys and Fleetwood are Wyre, so if you live there, none of the Blackpool planning detail above is yours.
Where these facts come from
- Blackpool Council: conservation areas
- Blackpool Council: Article 4 directions
- Blackpool Council: Raikes Hall Article 4 direction
- Blackpool Council: extended town centre conservation area appraisal
- Blackpool, Fylde and Wyre: Extending Your Home SPD (2007)
- Blackpool Council: New Homes from Old Places SPD
- Blackpool Council: building control contacts
- GOV.UK: permitted development technical guidance
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Questions people in Blackpool ask
My house used to be a guesthouse and already has a roof lift. Can I add a dormer as well?
Possibly, but the existing roof lift counts against your permitted development allowance, so you may need to apply. In the town centre conservation area the council has said it won't support new or additional roof lifts. Send the planners photos before anyone draws anything.
I'm in Raikes Hall. Do I need permission just for Velux windows?
Yes. Since 1 June 2020 the Raikes Hall Article 4 direction has covered rooflights and changes to roof coverings, so the windows you would normally fit without asking now need an application.
Can I convert my loft into a flat or let the rooms out?
Turning a house into a small HMO needs planning permission anywhere in Blackpool since October 2022. The council's conversion guidance also says houses under 160 square metres shouldn't be split into flats, and in the inner areas it won't accept roof extensions as part of a conversion.
Is Marton Moss treated differently?
It became a conservation area in 2018, so a dormer needs permission. The old cottages there were thatched, and the council's appraisal says many later went to corrugated iron. Ask the conservation team about the roof before you plan.