Newton Hall is the large estate north of Durham city, a spread of houses and gardens on ground that is kinder than the Wear gorge. It is not a river bank. It is still a Durham garden: shade, leaves, and a long damp season. Our team builds decks here in DH1 with the void under the boards treated as part of the structure. If air cannot move, the joists live in a wet cupboard.
A large estate north of the city
The estate was planned as housing, not as a village lane. Gardens repeat: a back door, a modest plot, a fence, often a shed. They are more regular than the slopes at Witton Gilbert and less dramatic than the peninsula. That regularity is useful. A deck the width of the rear wall, with one step to the remaining ground, fits many of these houses without a performance of levels.
Framwellgate Moor sits alongside, with its own streets and a similar northern position. The two places share weather and a need for ventilation. They do not share every plot. Some Newton Hall gardens are open and some are tucked against a taller neighbour and stay shaded until afternoon. We look at the light before we cover the only sunny patch.
We measure the side passage, because board lengths have to reach the back. A deck that blocks the only gate is not a finished garden.
Air under the boards
This is the point of the job on a northern estate. Durham's air is damp, and a deck on the soil traps it. We set posts and bearers so there is a real void, open at the edges, with a membrane and gravel to stop soil rising into the joists. Leaves from estate trees will drift in. The void has to be clearable, not a sealed box. The guide to ventilating a Durham deck is the longer version of this, and Newton Hall is a plain example of why it matters even when the ground is nearly level.
The BGS Geology Viewer shows the mapped ground. An estate of this scale also sits, in places, on ground made up when the streets were built. Trial holes at the posts tell us which we have. Firm ground, a simple footing. Fill or a soft pocket, a deeper footing or a post moved off a drain. We do not copy the neighbour's depth without looking.
We do not give Newton Hall a flood-zone figure. The Wear is in the city below, not at the back fence of a typical estate garden. The flood map for planning is still the check for the postcode. If a particular plot is shown as constrained, we will see it. Most of the design effort here goes into damp and shade, not into river levels.
Height and the ordinary rules
For a house, the Planning Portal tests are the ones we design to. The deck stays within 30 cm of the surrounding ground. With sheds and extensions it stays within half the garden. No part of it stands forward of the front wall. Estate sheds are often large relative to a short plot, so the half-garden sum is a real limit. We measure it. Flats do not use these allowances.
Conservation areas cover much of historic Durham and little of a late northern estate, but the map is the record, not the age of the road. We check the address on the national dataset. On designated land, decking to the side of the house is not permitted development. A listed building has no permitted development for decking in its garden. We do not label a Newton Hall house as listed because the city nearby is full of listed buildings. Each address is its own check.
Where the door is close to the garden, the deck can meet it and stay low. Where the sill is higher, steps take the difference. We do not raise the whole platform to chase a door and then discover the 30 cm line has been crossed.
Boards for a shaded plot
A north-facing garden stays slow to dry. Composite needs no seasonal oiling. Timber is right if you will keep shade from filming the grain. Either board still needs the ventilated frame.
Edges are finished with a fascia, and the fall runs away from the house so water is not held at the wall. Air bricks stay clear. That is ordinary good practice, and on this estate it is the difference between a deck you use and one that smells damp by November.
Ask for a quote with the postcode and which way the garden faces. We visit, look at the shade and the passage, and prepare a quote for a frame that can dry. Tell us if a shed already takes a large part of the garden. That fact belongs in the first conversation.
FAQ
Is Newton Hall on the river?
No. It is the northern estate, above the gorge. Ventilation still matters because the gardens are damp and often shaded. River levels are a different page.
Do these decks need to be raised?
Not for the sake of it. Many doors are close to the garden. We raise a frame only enough for air, and we step if the sill is higher than the allowance.
What is under the lawn?
The geology map is the first look. Trial holes are the one we build from, because estate ground can include fill.
How do we start?
The postcode and the way the garden faces, through the quote form. We arrange a visit and measure before the quote.
Sources: Planning Portal: decking; BGS Geology Viewer; Flood map for planning; Planning Data: conservation areas.