Pergola prices vary depending on size, material and specification. Here's an honest breakdown of what to expect from timber and aluminium pergolas in the Hertfordshire area.
Key Factors That Affect Pergola Cost
The cost of a pergola depends on four main factors: size (footprint and height), material (pressure-treated softwood, hardwood, composite or aluminium), roof type (open rafters, polycarbonate panels or louvred blades), and any additional features such as integrated lighting, electrical connections, climbing plant support wires, privacy screens or gates. Each of these adds cost but also adds value and usability.
Timber Pergolas: From £2,000–£5,000
A pressure-treated softwood pergola at a typical patio size (3m × 3m to 4m × 4m) with open rafter roof, installed on an existing patio, typically costs between £2,000 and £3,500 supply and install in the Hertfordshire area. A larger structure (5m × 4m and above), or one with hardwood timber rather than softwood, sits in the £3,500–£5,000 range. Timber pergolas require regular maintenance — oiling or staining every 2–3 years — to maintain appearance and prevent deterioration.
Aluminium Pergolas: From £4,000–£9,000
Powder-coated aluminium pergolas are significantly more expensive than timber but require virtually no maintenance and have a contemporary, architectural appearance that many homeowners prefer. A louvred roof aluminium pergola — where the blades can be adjusted to control light and ventilation — at a standard patio size starts from around £4,000–£5,500. Larger structures with built-in lighting, side privacy screens and integrated drainage typically cost £6,000–£9,000 or more.
Wall-Mounted vs Freestanding
A wall-mounted pergola (fixed to the house wall on one side) is typically less expensive than a fully freestanding structure because it requires fewer posts and less material. However, fixings into the house wall must be done correctly to avoid water ingress — an important consideration in the UK climate. Freestanding structures allow more flexibility in positioning and are often preferred for larger gardens where the pergola is sited away from the house.
Additional Costs to Budget For
If a new patio or base is needed, this adds cost — typically £800–£2,500 depending on size and material (porcelain, paving or concrete). Electrical connection for integrated lighting or an outdoor socket adds £300–£600 depending on the distance from your consumer unit. Climbing plant support wires or a trellis infill can add £150–£400. Always ask for a fully itemised quote so you know exactly what is and isn't included.
How to Get a Quote From Zebra Trades
We supply and install timber and aluminium pergolas across Hertfordshire, Essex and surrounding areas. For a free site survey and written quotation, contact us with your garden dimensions and any reference photos you have. We'll come to you, assess the site and provide a fixed-price written quote with no obligation to proceed.