Dunster House Utopia Lean To Gazebo & Veranda | W6m x D3m | Fully Installed Nationwide

If you have ever looked at the side of your house and imagined what it could become, the Dunster House Utopia Lean To Gazebo is the answer. Spanning 6 metres wide and 3 metres deep, this wall-mounted lean-to structure creates a covered outdoor living space — a veranda-style extension of your home that genuinely changes how you use it. A sheltered dining area for summer evenings, a year-round hot tub enclosure, an outdoor kitchen, or simply the most impressive entertaining space on the street.

What sets this apart from anything you will find in a garden centre is the way it is delivered. This is not a flat-pack kit that arrives on a pallet and sits in your garage for six months. The Dunster House Utopia Lean To Gazebo is supplied by Dunster House and fully installed by our in-house team at Bespoke Oak and Slate, with every element of the project handled from the moment we arrive on site to the moment we hand over the keys. Foundations, flashings, shingles, fixings — all included, all done properly. We install across the whole of Mainland UK — wherever you are, our team comes to you.

A Lean-To Gazebo That Works Like a Veranda

The Utopia Lean To is one of the most versatile structures in our range precisely because it bridges the gap between a traditional veranda and a freestanding gazebo. Fixed directly to your house wall, it creates a covered outdoor space that feels like a natural extension of your home — the sheltered, connected quality of a veranda, with the open, airy character of a gazebo. It is the best of both worlds, and at 6m wide it has the scale to make a real statement.

Built from 100% slow grown spruce with 70mm x 70mm uprights and a 15mm tongue and groove roof deck, the structure has a solidity and presence that you notice immediately. Every piece of timber is pressure treated before it leaves the factory, giving you a 10-year guarantee against rot and insect infestation. Once installed, all exposed timber is finished with Smart Seal — a premium timber sealant that locks in the treatment, repels moisture, and keeps your structure looking its best for years without constant maintenance.

Why Choose Bespoke Oak and Slate to Install It

We install garden structures across the whole of Mainland UK using our own in-house teams — not subcontractors, not agency labour, but experienced installers who have fitted hundreds of structures and take pride in the quality of every job they complete. When you buy through us, you are not just buying a product; you are buying a finished result that is ready to use from day one, with no groundworks to organise, no roofing contractor to find, and no finishing work left for you to sort out.

Our installation includes full foundation preparation, so there is no separate groundworks quote to worry about. We supply and fit the wall flashings that create a weathertight seal between the structure and your home. We install the shingle roof covering as standard. We seal all timber with Smart Seal. And we leave your garden clean, tidy, and transformed.

What’s Included as Standard

• Nationwide installation — we install across the whole of Mainland UK using our own in-house teams
• Full professional installation — our team handles everything from groundworks to handover
• Foundation preparation — included as standard, no separate quote required
• All fixings supplied — every bolt, bracket, and fixing needed for a complete, secure installation
• Wall flashings supplied and fitted — a fully weathertight seal between the structure and your wall
• Shingles supplied and installed — roof shingle covering included in the price and professionally fitted
• Smart Seal timber treatment — all timber sealed with Smart Seal as standard for lasting protection and a premium finish
• Pressure treated timber throughout — factory treated with a 10-year guarantee against rot and insect infestation

Optional Upgrades

• Britmet Composite Slate Roof Upgrade — £2,000 — replace the standard shingle finish with a premium Britmet composite slate roof. The roof area on this structure is 6.638m x 3.070m (20.38m²). The upgrade includes supply, full installation, and all associated flashings, delivering a finish that is virtually indistinguishable from natural slate and engineered to last a lifetime with zero maintenance.
• Roof Lantern / Skylight Window — flood your gazebo or veranda with natural light by adding a professionally installed roof window or lantern integrated directly into the roof structure. Perfect for hot tub enclosures and dining areas where you want the open-sky feel without the weather. Contact us for a price.
• Timber Decking — £2,000 — complete the look with a professionally installed timber deck beneath your gazebo. Based on the full footprint of 6.12m x 2.978m (18.23m²), this creates a seamless, finished outdoor floor that ties the whole space together. Basic pressure treated timber, sealed with Smart Seal as standard.
• Composite Decking Upgrade — upgrade your deck to a premium low-maintenance composite finish that never needs oiling, staining, or treating. Ideal for high-use areas and hot tub surrounds. Contact us for a price.
• Lighting Installation — add a professionally designed and installed outdoor lighting scheme to your gazebo or veranda. From simple downlighters to atmospheric feature lighting, we handle the full installation. Contact us for a price.

Technical Specifications

• External Width: 6.12m (20’ 1")
• External Depth: 2.978m (9’ 9")
• Internal Width: 5.91m (19’ 5")
• Internal Depth: 2.873m (9’ 5")
• Internal Area: 16.98m²
• Roof Area: 6.638m x 3.070m (20.38m²)
• Overall Height: 2.72m (8’ 11")
• Internal Eaves Height: 2.06m (6’ 9")
• Roof Overhang: 0.125m
• Uprights: 70mm x 70mm slow grown spruce
• Roof Structure: 15mm tongue and groove boards
• Timber: 100% slow grown spruce, pressure treated
• Timber Finish: Smart Seal applied to all exposed timber as standard
• Guarantee: 10 years on pressure treated timber against rot and insect infestation

All sizes quoted are nominal. This is a fully installed product — no DIY assembly required. Supplied by Dunster House, installed by Bespoke Oak and Slate across Mainland UK.