Pergola vs Gazebo: Which Is Right for Your UK Garden?

The difference comes down to one thing: the roof. A gazebo has a solid, fixed roof that keeps you dry whatever the British weather does. A pergola has an open, slatted or louvred roof that trades some rain cover for light, air and a cleaner modern look. Everything else in this comparison flows from that one fact.

Opal sells both, so this is not a sales pitch for either. This guide will tell you honestly which structure suits your situation, with a plain-English decision table and links to the full buying guides for each product if you want to go deeper.

In this guide

• The core difference: what each one actually is
• Rain cover: which keeps you dry?
• Cost: what to expect
• Sizing: what footprint do you actually need?
• Planning permission: is there a difference?
• Aesthetics and garden style
• Year-round usability
• Which is better for a hot tub?
• Which adds more value to your home?
• Decision table: which should you choose?
• Frequently asked questions

The core difference: what each one actually is

A pergola has an open, slatted or louvred roof that lets in light and air. A gazebo has a solid, fixed roof that gives full shelter from rain and sun. That is the defining difference, and in the UK it is really a choice between airflow and staying dry.

A pergola is a post-and-beam structure with a roof of open slats, a retractable fabric canopy, or adjustable aluminium louvres. The space underneath is defined but open to the elements unless the canopy is closed. Pergolas are almost always rectangular and integrate naturally with the house and patio architecture.

A gazebo is a freestanding structure with a solid roof, typically polycarbonate or steel, and curtain or mesh sides. The roof is fixed, not adjustable, which means full cover in all weather but no option to open it on a clear evening. Gazebos are commonly square or rectangular at the domestic scale, though hexagonal shapes appear at the smaller end of the market.

Rain cover: which keeps you dry?

A hardtop gazebo keeps you reliably dry in any rain. A slatted pergola does not. A closed louvred pergola with integrated drainage comes close, but open sides still let in wind-driven rain.

This is the most important question for a UK buyer and deserves a direct answer rather than hedging.

The hardtop gazebo has a solid polycarbonate or steel roof with no gaps. Sit-out-in-any-downpour coverage is the one thing a gazebo does better than any open-roof pergola, full stop. The curtain sides add wind and rain protection from the sides too, though they are not fully weatherproof in sideways rain.

Where it gets more nuanced is the louvred pergola. A properly engineered louvred roof with gapless dual-wall slats and integrated drainage channels can match a gazebo's overhead cover when the slats are fully closed. The slats channel rainwater into the frame gutters and drain it clear of the seating area. However, no louvred pergola covers the sides, so wind-driven horizontal rain still reaches the space underneath. And budget louvred kits with single-wall slats and no drainage will drip in moderate rain.

One practical UK consideration: polycarbonate and metal roofs can be noisy in heavy rain. If the gazebo is directly outside a living room or bedroom, heavy summer showers will be audible. Twin-wall polycarbonate is quieter than single-wall; a steel panel roof is louder.

If guaranteed rain cover overhead is your primary requirement, the hardtop gazebo is the simpler, more reliable and more affordable solution. If you want adjustable cover that can be fully opened on clear evenings, a louvred pergola provides it at higher cost.

Best for rain cover

4x3.6m Polycarbonate Hardtop Gazebo, Aluminium Frame

Powder-coated aluminium frame with a 7mm polycarbonate hardtop roof, plus four curtains with mesh screens for privacy and bug protection. Full overhead cover in any rain. Larger than the 3x3m footprint, at 4x3.6m, for buyers who want more covered space.

From £799.99 View this gazebo →

Best for adjustable cover

3x3m Metal Pergola With Retractable Roof and Curtains, Light Grey

Anti-rust coated metal frame with a PU-coated retractable canopy roof and curtains on all four sides. Open the canopy fully for clear-sky evenings, or close it and the curtains for shade, privacy and light rain cover. Ground fixing kit included.

From £257.99 View this pergola →

Cost: what to expect

A hardtop gazebo gives you more covered space per pound than most pergolas. You pay a premium for a pergola's adjustable roof and modern aesthetics.

At the 3x3m size most UK buyers start with, a polycarbonate hardtop gazebo runs from around £380 to £700 depending on frame material and included accessories. That price includes a solid roof, curtains, mesh and a structure ready for year-round use.

A pergola at the same footprint ranges much more widely depending on roof type. A retractable fabric canopy pergola starts from around £150 to £250 and handles light rain only. A proper louvred-roof aluminium pergola with adjustable slats and drainage starts from around £1,400 to £2,000 for a 3x3m unit. That is a significant premium over a hardtop gazebo, paid for adjustability, aesthetics and a 15 to 25-year aluminium lifespan with zero maintenance.

The honest comparison: a hardtop gazebo at £479 and a louvred pergola at £1,999 are not the same product. The gazebo gives you a fixed solid roof. The louvred pergola gives you a roof you can open, close and angle, integrated lighting, and a contemporary aluminium frame. If you want covered outdoor space at the best price, the gazebo wins. If you want control, longevity and looks, the louvred pergola justifies the difference.

If you want to compare specific models rather than price bands, two of our more popular mid-range pergolas are the 3x3m steel pergola with a retractable canopy, from £187.99, and the 3x3m wall-mounted metal pergola, from £111.99, which leans against the house wall for a lower-cost lean-to option.

Sizing: what footprint do you actually need?

Match the footprint to what you are putting underneath it, not the other way round. Undersizing is the most common mistake buyers make with either structure.

As a rough guide for typical UK gardens:

• Compact bistro set (2 to 4 chairs): around 2m x 2m to 2.5m x 2.5m.
• Standard 4-seat dining set: around 2.5m x 2.5m to 3m x 3m, to leave room to walk around the table.
• 6-seat dining set: 3m x 3m is usually the minimum; 3m x 4m is more comfortable, especially with armchairs or a serving trolley.
• Corner lounge set: often 3m x 3m or 3m x 4m depending on the depth of the sofa.
• Hot tub: measure the tub's own footprint and add a minimum of 600mm clearance on each side you need access from.

Before you buy, measure your patio or decking, mark out the footprint with string or cane, and check that door openings, garden paths and any nearby trees or guttering will not interfere. Whichever structure you choose, allow at least 60cm of clearance on each side for comfortable movement around furniture.

Planning permission: is there a difference?

No meaningful difference. Both a pergola and a hardtop gazebo normally qualify as permitted development in England and do not need a planning application, as long as they stay within the same size limits.

Both are treated as garden outbuildings under Class E of the General Permitted Development Order. The same rules apply to both:

• Maximum height of 2.5m where any part is within 2 metres of a boundary.
• Maximum height of 3m (any other roof) or 4m (dual-pitched roof) more than 2m from all boundaries.
• Maximum eaves height of 2.5m.
• Not forward of the principal elevation.
• Structures must not cover more than 50% of the garden area around the original house.

Restricted for listed buildings, conservation areas, National Parks and AONBs. A lean-to pergola fixed to the house wall is assessed against extension rules, which are different. If in doubt, check with your local planning authority before purchasing either structure.

Aesthetics and garden style

A pergola suits a modern or contemporary garden; a gazebo suits a more traditional or destination-style garden.

Pergolas are clean-lined and architectural. An aluminium pergola sits naturally alongside a contemporary house extension, a tiled patio and modern garden furniture. It looks like part of the architecture rather than a structure placed in the garden.

A hardtop gazebo reads more as a destination: a defined room within the garden. This works well in a larger, more traditional garden where a separate outdoor room makes sense, but in a small contemporary patio it can feel like a large box placed in the middle of the space.

Year-round usability

A hardtop gazebo is the stronger year-round structure. A louvred pergola with side screens comes close; a slatted or fabric-canopy pergola is a fair-weather structure only.

A gazebo with a solid polycarbonate roof and curtain sides gives usable shelter from spring through to autumn and on mild winter days. The enclosed sides block wind; the solid roof blocks rain and retains some warmth.

A louvred pergola with aluminium slats fully closed matches the gazebo's overhead cover. Add side curtains and it approaches a gazebo's wind protection too. A fabric retractable canopy pergola is not a year-round structure: the canopy should be removed or retracted for winter storage to prevent mildew and UV degradation.

Which is better for a hot tub?

Both work for a hot tub. The key requirement for either is adequate ventilation so steam can escape.

A hardtop gazebo gives full overhead cover and privacy around the hot tub on all four sides. The critical specification: the gazebo must be ventilated, ideally with mesh panels in the curtains or sides that can remain open to allow steam to escape. Trapping steam under a fully enclosed solid roof causes condensation and corrosion of the roof fixings over time.

A louvred pergola gives overhead cover when the slats are closed, with the significant advantage that the slats can be partially opened to vent steam without exposing the tub to rain. Open sides naturally vent the space, which makes a louvred pergola the cleaner hot-tub solution from a ventilation standpoint.

For either structure, confirm the base can take the load of a filled hot tub, which can exceed 2,000kg for a 4-person tub. The structure's feet must sit on a reinforced concrete slab, not on pavers alone.

Hot tub or year-round pick

4x3.6m Hardtop Gazebo, Polycarbonate Roof, Curtains & Mesh

An aluminium and steel-framed hardtop with mesh inner curtains for ventilation and outer curtains for privacy. Full overhead and side enclosure when needed. Mesh panels let hot-tub steam vent without exposing the space to rain. Larger than 3x3m, at 4x3.6m, for a bigger year-round space.

From £858.99 View this gazebo →

Which adds more value to your home?

Neither adds a formal surveyed valuation increase in the way a brick extension does, but both improve saleability when well-proportioned and properly anchored.

Estate agents consistently describe a quality garden structure as improving how quickly and easily a property sells rather than increasing the surveyed valuation. A louvred pergola or hardtop gazebo that looks integrated, is the right size for the garden, and leaves adequate open space reads as infrastructure rather than personal property. An oversized or mismatched structure does the opposite regardless of product type.

Decision table: which should you choose?

Frequently asked questions

What is the difference between a pergola and a gazebo?

A pergola has an open, slatted or louvred roof that lets in light and air but offers limited rain protection unless the canopy is closed. A gazebo has a solid fixed roof that gives full overhead cover in any weather. The roof is the defining difference. Everything else, including size, planning rules and assembly, is broadly comparable.

Is a pergola or gazebo better for rain?

A hardtop gazebo is better for rain. Its solid polycarbonate or steel roof gives complete overhead cover in any downpour. A slatted pergola offers no rain protection; a retractable canopy handles light rain; a closed louvred pergola with integrated drainage gives good overhead cover but open sides still let in wind-driven rain.

Is a gazebo or pergola cheaper?

At the same size, a hardtop gazebo typically costs less than a pergola with equivalent weather protection. A 3x3m polycarbonate hardtop gazebo runs from around £380 to £700. A 3x3m louvred pergola with comparable rain cover starts from around £1,400 to £2,000. A basic retractable-canopy pergola is cheaper but handles light rain only.

Do you need planning permission for a pergola or gazebo in the UK?

Neither normally needs planning permission in England. Both qualify as permitted development under Class E of the General Permitted Development Order: maximum 2.5m height within 2m of a boundary; maximum 3m or 4m further away; not forward of the house; not covering more than 50% of the garden. Listed buildings, conservation areas and National Parks have stricter rules.

Which is better for a hot tub: a pergola or a gazebo?

Both work for a hot tub. A hardtop gazebo gives full overhead cover and privacy. A louvred pergola gives adjustable overhead cover with natural side ventilation, which is better for managing steam. Whichever you choose, ensure there is adequate ventilation so steam can escape rather than condensing under the roof. Confirm the base can take a filled hot tub's weight before installing either.

Can you leave a pergola or gazebo up all year in the UK?

An aluminium-framed pergola or hardtop gazebo can stay up year-round with no maintenance. Retractable fabric canopies should be removed or retracted for winter storage to prevent mildew and UV damage. Clear any snow accumulation from roofs promptly as neither structure is designed to carry significant snow load.

What size pergola or gazebo do I need?

For a seating area for two to four people, a 2m x 2m to 2.5m x 2.5m structure is sufficient. For a 6-seat dining table, 3m x 3m is the usual minimum, with 3m x 4m more comfortable. Always measure your intended space first and allow at least 60cm of clearance on each side for comfortable access.

Does a pergola or gazebo add more value to your home?

Neither adds a formal surveyed valuation increase in the way a brick extension does, because neither adds internal floor area. Both improve saleability: a well-proportioned, quality structure helps properties sell faster and supports the asking price. An oversized or poorly positioned structure has the opposite effect regardless of product type.