Here's what to know about Coulby Newham's gardens, its clay and the beck, the planning position and the cost factors.
A planned suburb with every size of garden
Coulby Newham has one of the most mixed housing profiles in south Middlesbrough. According to the 2021 Census, 36.9% of homes in the ward are detached, 25.2% semi-detached, 20.3% terraced and 16.5% purpose-built flats. Just under 59% of households own their home and around 31% rent from a council or housing association.
The layout is built around culs-de-sac and short closes off distributor roads such as Newham Way and Stainton Way, with names like Hollowfield, Saxonfield, Alderwood, Grange Wood and Harvington Chase. Footpaths and strips of woodland thread between them, so some gardens back onto trees or a green corridor rather than another row of houses.
That variety means there's no single "Coulby Newham deck". In the detached houses, rear gardens are typically a good size and enclosed by fencing on three sides, with patio doors from a lounge or dining room. A deck the width of the house, set just below the door, with a step down to the lawn, is one option; a corner deck at the end of the garden to catch evening sun is another. In the terraces and smaller semis, gardens are tighter, and a compact deck can turn an awkward patch of lawn into an outdoor room that's usable all year.
Gardens backing onto woodland have their own considerations: leaf fall, shade and moisture. Textured, capped composite boards cope well because they resist the algae that makes timber slippery under trees, and a slightly wider board gap helps leaves wash through.
Access varies: detached houses usually have a drive or side path, while terraces may rely on a rear footpath. We check the route at the visit.
Clay, drainage and Newham Beck
The BGS 1:50,000 geology map shows Coulby Newham on till over Mercia Mudstone. Till is boulder clay: firm and stony, slow to drain, and prone to a little seasonal movement near the surface. Gardens on modern estates can also have a layer of compacted builders' fill or imported topsoil over the natural clay, which is softer than it looks.
So we dig. Each footing goes through any fill and topsoil into firm natural clay before the concrete goes in. Under the deck we lay a membrane and gravel to stop weeds and help water soak away, and we make sure the deck doesn't block the route rainwater takes across the garden.
Newham Beck runs through the area, and the Environment Agency's Flood Map for Planning shows several pockets of Flood Zone 2 land along it within a few hundred metres of Hollowfield Square. If your garden is near the beck, check your postcode before planning anything at ground level, and we'll keep electrics such as lighting drivers off the ground.
Planning in Coulby Newham
Coulby Newham isn't in a conservation area. Coulby Manor and part of the walling near it are listed Grade II, but that only matters for those buildings and their grounds.
So the national permitted development rules apply: a deck needs no planning application if it's no higher than 30cm, covers no more than half the garden together with other outbuildings and extensions, and doesn't sit in front of the principal elevation. Raised decks above 30cm need permission.
Two local points are worth checking. First, homes on planned estates sometimes have planning conditions or restrictive covenants that limit what you can build; your deeds will say. Second, if you rent from a housing association or private landlord, you'll need written permission before any work starts.
What affects the cost of a deck in Coulby Newham
We don't publish prices. Size and the choice of board are the starting point. After that, the footings (especially where there's soft fill to dig through), any steps or levels, edging, and built-in features such as benches, planters or lighting make the difference. Clearing an old patio or turf adds labour, and terraces with no side access take longer to supply. Our decking costs guide covers each factor.
Nearby areas
- Hemlington: immediately west, around Hemlington Lake, with more terraced and semi-detached homes.
- Stainton and Thornton: the villages to the west, with a conservation area and older houses.
- Brookfield: to the north-west, semis and detached homes on similar boulder clay.
See all areas on the areas page, or read about deck replacement and timber and hardwood decks.
Your questions about decking in Coulby Newham
My garden backs onto woodland. Which decking is best?
A capped composite board with a textured surface. It doesn't soak up moisture or grow the green algae that makes timber slippery in shade, and it won't rot from fallen leaves. We'd also allow enough ventilation underneath and a board gap that lets leaves and grit wash through.
Are there covenants on Coulby Newham homes?
Some homes on planned estates have restrictive covenants or planning conditions limiting extensions or outbuildings. They vary by street and builder, so check your title deeds or ask your conveyancer. We can work to any limit they set, and most low decks fall well inside them.
Can I have a deck if I rent from a housing association?
Possibly, but you'll need the landlord's written permission first. Most landlords have a process for tenant improvements. We're happy to provide a quote and a simple description of the deck that you can send with your request.
What happens to rainwater under the deck?
It soaks into a gravel bed laid over a weed membrane. On clay that takes time, so we fall the ground slightly away from the house and leave the edges of the deck open where needed, so water isn't trapped beneath or pushed towards the walls.
Sources: ONS Census 2021 TS044 and TS054, Coulby Newham ward (Nomis); BGS Geology Viewer 1:50,000; Environment Agency Flood Map for Planning; Historic England: the List (Coulby Manor); Planning Portal: decking; OpenStreetMap.