Build a raised patio.

A raised patio sits above ground level — anywhere from a small step up (200 mm) to a significant elevated platform (1 m+) connected to the house at first-floor level. They're the answer for sloped gardens, properties where the back door is well above ground level, or where you want a sunny entertaining area away from house shade. This guide covers what a raised patio costs in 2026, the structural requirements, and the planning rules that kick in above 300 mm height.

Raised patios are significantly more expensive than ground-level patios of the same area because of the structure underneath — retaining walls, foundations, and (often) balustrades.

What Does the Work Involve?

• Site analysis — soil, drainage, foundations of adjacent structures.
• Retaining wall construction — typically blockwork with engineering brick or stone-clad finish.
• Concrete strip foundations to support the walls.
• Hardcore infill or void with concrete slab depending on height.
• Top surface — same patio types as ground-level.
• Balustrade or railings if over 600 mm.
• Drainage at the top and at the base of retaining walls.

Typical Costs

The retaining wall is the biggest cost variable. A simple block wall is cheaper than a stone-clad heritage finish or rendered modern wall.

How Long Does It Take?

• Small raised patio: 1.5–2 weeks.
• Medium raised patio with balustrade: 3–4 weeks.
• Complex multi-level builds: 4–6 weeks.

DIY or Professional?

Raised patios are not DIY. Retaining walls have to be structurally sound, foundations have to be calculated correctly, and the wrong build can fail dramatically. Hire a landscape contractor or builder with raised-patio experience specifically. Some jobs will need a structural engineer.

Choosing the Right Tradesperson

• Confirm retaining wall experience and foundation design.
• Ask about waterproofing the back face of retaining walls.
• Confirm drainage planning — both surface and at wall base.
• Get balustrade Building Regs compliance in writing (1,100 mm height, max 100 mm gaps).
• Discuss soil compaction in fill area to prevent later settlement.
• Insurance and structural-engineer involvement for heights over 1.2 m.

UK Regulations

• Raised patios over 300 mm need planning permission if within 2 m of a boundary.
• Over 600 mm requires balustrade per Building Regs (1,100 mm height).
• Over 1,200 mm typically needs structural-engineer-stamped design.
• Properties in conservation areas have stricter rules.
• Listed buildings need consent for any raised structure.

Common Problems

• Retaining wall failure — undersized walls bulge or crack within years. Engineer-designed walls for anything over 1 m.
• Infill settlement — uncompacted hardcore settles, causing patio surface to dish. Mechanical compaction in layers prevents.
• Drainage failure — water pools behind retaining wall, causing damp and frost damage. French drains or weep holes essential.
• Balustrade non-compliance — 1,100 mm height and 100 mm max gap are legal requirements over 600 mm.
• Damp affecting neighbouring structures — retaining walls back-flooding into adjacent gardens or properties.

Frequently Asked Questions