Nearly half the borough was built between 1945 and 1982
Stockton's story usually starts in 1825, with Locomotion No 1 and the Stockton and Darlington Railway. The houses tell a later one. The Valuation Office counts about 87,300 homes in the borough, and fewer than one in ten went up before 1919. Close to half were built in the four decades after the war. The busiest stretch was 1965 to 1972, with almost 12,900 homes in eight years.
So the loft we survey most often isn't under a Victorian slate roof. It's above a post-war semi in Stockton, Billingham or Thornaby, or a newer house in Ingleby Barwick, where large-scale building began in the late 1970s and the first homes opened in 1981. Even old Hartburn, a village of 135 people in 1848, filled up with semis from the 1930s.
Roof structure is the first thing to check. Older houses tend to have cut timber roofs that open up with modest strengthening. A lot of the later estates, and the new ones at Harrowgate Lane, Allens West and Wynyard Park, use factory trussed rafters. Those trusses come out and steel goes in. Still very doable. Just a bigger job.
Yarm, Norton and Hartburn: pantiles and tighter rules
The borough has 11 conservation areas. Yarm and Norton were both designated in 1969, Hartburn in 1971 and Stockton Town Centre in 1974. The others are Billingham Green, Bute Street, Cowpen Bewley, Eaglescliffe with Preston, Egglescliffe, Thornaby Green and Wolviston. Bute Street is tiny by comparison, a single row of workers' houses, Nos 1 to 18, designated in 1987.
Walk the old cores and you see pantile again and again. Historic England's listings for Yarm High Street describe 18th-century houses in incised stucco over brick under swept pantiles, some of them high pitched. Round Norton Green it's two-storey brick and pantile, and the cottages in Hartburn Village are the same. Even the 1735 Town Hall has hipped pantiled roofs. A dormer clad to match, set well back, is the sort of thing a conservation officer can live with. A wide box in grey felt is not.
Inside any conservation area, a dormer or hip to gable needs planning permission on the back slope as well as the front. Stockton goes further. Article 4 directions on the most sensitive parts of its conservation areas (not Stockton Town Centre or Eaglescliffe with Preston) remove the Class C right to add rooflights. If your house is caught, even one Velux needs an application. The council's map shows which properties are covered.
Dunedin House and the paperwork
Planning goes to Stockton-on-Tees Borough Council. Search your street on its public register to see what neighbours have been allowed. Building control is the council's own team, based at Dunedin House on Columbia Drive. Visits there are by appointment.
They want 48 hours' notice before work starts, then a call at each stage they name. Miss one and the builder may have to open the work back up, and the completion certificate a buyer's solicitor asks for could be withheld.
How each type suits Stockton's houses
Each of these links to a full guide. The notes here are about the local housing.
Dormer on the back slope. The usual way to get a proper room out of a post-war semi or an inter-war house. Outside a conservation area it is normally permitted development. Inside one, Yarm and Norton included, it needs planning permission.
Hip to gable. Where a post-war semi has a hipped end, that slope eats the headroom. Squaring it off, often with a rear dormer as well, is what makes many of them worth converting.
Read our full guide: Hip-to-Gable Loft Conversions: What It Involves and Which Houses It Suits →
Extra bedroom. Most Stockton families convert for this. Building control will check the stair and fire protection before signing off.
En-suite. Settle it before the drawings. The soil pipe route decides where the shower goes, and if the work affects drains, Northumbrian Water may need to be involved.
Rooflights only. Often the gentlest option on a steep pantile roof in an old village core. Check the Article 4 map first, because in parts of Stockton's conservation areas rooflights need permission.
L-shaped dormer. Only an option where a terrace has a two-storey back addition, which narrows it to the older streets. The section over the back addition usually takes the shower room.
Home office. A low room under the eaves can make a decent office where a bedroom won't meet the headroom. Ask for a data cable and extra sockets while the floor is open.
Read our full guide: Loft Home-Office Conversion: What Works Well Up There and What to Specify →
Mansard. Unusual here and always a planning application. On a listed house in Yarm we wouldn't start without an architect and an early word with the council.
Planning. Most loft work on an ordinary semi in the borough goes ahead without an application. Conservation areas, the Article 4 properties, listed buildings and estates whose consent removed those rights are the exceptions.
Cost. No price on this page. Cutting out trusses on an Ingleby Barwick house and adding a dormer to a cut roof in Hartburn are different jobs, and three site visits will tell you more than any figure we could print.
Where these facts come from
- Stockton-on-Tees Borough Council: Article 4 directions
- Planning Data: Stockton-on-Tees conservation areas
- VOA council tax stock of properties by build period (2019)
- Stockton-on-Tees Borough Council: building control contact
- Stockton-on-Tees Borough Council: completing your building project
- Stockton-on-Tees Borough Council: nutrient neutrality
- Historic England: Stockton Town Hall
- Planning Data: Yarm conservation area
- Co-Curate: Hartburn
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Questions people in Stockton-on-Tees ask
We live in Yarm conservation area. Can we just put Velux windows in the roof?
Not without checking. The council has Article 4 directions on parts of its conservation areas, and Yarm isn't one of the two it leaves out. Where they apply, they remove the right to alter a roof without permission, rooflights included. Look your house up on the council's Article 4 map. If it's covered, you'll need a planning application.
Does the Article 4 direction apply in Stockton Town Centre or Eaglescliffe with Preston?
No. The council says its conservation area Article 4 directions leave those two out. They are still conservation areas, though, so any dormer or hip to gable there needs planning permission, front or back.
Our Ingleby Barwick house is from the 1980s. Is the loft worth converting?
Often, yes, but get a surveyor up there first. Houses of that age frequently have trussed rafters, which means taking the trusses out and putting in steel. Also check your original planning consent, as some estates lost permitted development rights when they were built.
I want to make the loft a separate flat for my mum. Does nutrient neutrality come into it?
It can. Since Natural England's advice of March 2022, development in Stockton that creates new overnight accommodation, such as new homes, has had to show it won't add nitrogen to the Teesmouth and Cleveland Coast protected site. A self-contained flat is a new home. Talk to the council's planning team before paying for drawings.