How much does a raised deck cost in Teesside?

£150 to £220 per square metre installed, plus £60 to £120 per linear metre of balustrade. Height, post count and steps drive the figure more than the board choice does.

Do I need planning permission for a raised deck?

Possibly. Above 300mm from ground level the permitted development allowance for decking normally stops applying, and overlooking matters. Check with the local authority before ordering materials.

How high can a deck go?

There is no fixed limit, but design gets more serious with height: bigger posts, engineered bracing, deeper pads, guarded edges. Beyond about 1.5m it is worth having the structure checked by an engineer.

Can steps be added to an existing deck?

Usually yes, provided the existing frame is sound and can carry the connection. The stringer has to land on a proper base, not on soil, and riser heights need to stay consistent.

Raised and multi-level decking in Teesside

Raised and multi-level decking in Teesside costs £150 to £220 per square metre installed in 2026. The extra over a ground-level deck buys engineered posts, diagonal bracing, deeper footings and balustrade, which is exactly where a raised deck either stands for 25 years or wobbles by year three.

Get Quote Call 01642 548 530 From £150 per m²

Raised deck with glass balustrade overlooking water

Why height changes everything

Lift a deck off the ground and it stops being a surface and becomes a structure. Loads concentrate into posts instead of spreading across the soil, wind can get underneath, and lateral movement has to be designed out with bracing rather than hoped away. Posts are typically 100mm by 100mm treated timber or steel on concrete pads sized to the load, set below the frost line and not simply bedded in a shallow hole of postcrete. On a deck at 1.2m or more, diagonal knee bracing in both directions is not optional, and the honest test of a raised deck is whether it moves when four people walk across it together.

Multi-level decks and split gardens

A great many Teesside back gardens fall away from the house, sometimes half a metre across a 10m plot, sometimes far more on the plots under the Cleveland Hills. Two or three levels linked by short flights of steps handles that fall better than one enormous raised platform: less structure, less balustrade, and usable outdoor rooms instead of one windswept stage. Typical design moves are a dining level at threshold height off the patio doors, then a step down of two or three risers to a seating level, then a planted terrace where the ground gets away entirely. Sloped garden design works through the drainage and retaining side of that.

Rules that actually apply

Decking under 300mm above ground is usually permitted development in a normal garden. Once a deck platform goes above 300mm, planning permission may be needed and neighbour overlooking becomes a real consideration, particularly on the tightly packed newer estates. Anything guarding a drop needs a balustrade at the proper height with gaps that a child cannot pass through, and raised structures attached to the house can bring building regulations into the conversation. A competent contractor will raise those points at the quote stage rather than after the posts are in.

What the quote should show

Post size, spacing and material, and the size and depth of every concrete pad.
Bracing detail, and how the frame ties to the house wall if it does.
Beam sizes and joist spans, not just joist centres.
Balustrade metres, infill type, and step riser and going dimensions.
Access under the deck for inspection, and ventilation to keep the underside dry.

Balustrades, steps and handrails are usually priced as a separate line, and steep plots around Saltburn and Guisborough are where these builds earn their keep.