Dunster House Utopia Lean To Gazebo & Veranda | W4m x D3m | Fully Installed Nationwide

Four metres wide and three metres deep — the Dunster House Utopia Lean To Gazebo in 4m x 3m hits the sweet spot between compact convenience and genuinely generous outdoor space. With over 10m² of covered area fixed directly to your house wall, this lean-to gazebo functions as a true veranda — a sheltered, connected extension of your home that works as an outdoor dining room, a hot tub enclosure with room to breathe, a covered kitchen and entertaining area, or simply the best-looking addition your garden has ever had.

This is not a self-assembly kit. The Dunster House Utopia Lean To 4x3 is supplied by Dunster House and fully installed by our in-house team at Bespoke Oak and Slate — from the moment we break ground to the moment we hand over a finished, ready-to-use structure. We cover the whole of Mainland UK, so wherever you are, our team comes to you with everything needed to complete the job properly.

The Versatility of a Veranda, the Character of a Gazebo

The 4m x 3m Utopia Lean To occupies a unique position in the market — wide enough to feel like a proper outdoor room, compact enough to suit most gardens, and fixed to your house wall in the way a traditional veranda would be. The result is a structure that delivers the sheltered, connected quality of a veranda with the open, airy character of a gazebo. It is the size that most of our customers end up choosing, and once it is installed, it is easy to see why.

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 feel as soon as it goes up. Every piece of timber is pressure treated at the factory — not dip treated, but properly pressure treated through to the core — and backed by 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 and keeps the structure looking sharp with minimal maintenance year after year.

Installed by Our Own Team, Nationwide

Every installation we carry out is done by our own experienced in-house team — no subcontractors, no agency labour, no passing your job to whoever happens to be available. We handle the full scope: foundation preparation, wall flashings, shingle roof installation, Smart Seal timber treatment, and a clean, tidy finish. You get a structure that is ready to use from day one, with no follow-up work required on your part.

We install across the whole of Mainland UK, from the south coast to the Scottish Highlands. Wherever your garden is, we will be there.

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 — £1,000 — replace the standard shingle finish with a premium Britmet composite slate roof. Based on the roof area of approximately 4.03m x 3.10m (12.49m²), this upgrade includes supply, full installation, and all associated flashings — a finish that is virtually indistinguishable from natural slate and engineered to last a lifetime with zero maintenance.
• Roof Lantern / Skylight Window — bring natural light pouring into your gazebo or veranda with a professionally installed roof window or lantern integrated directly into the roof structure. Particularly effective over hot tub enclosures and dining areas where you want the open-sky atmosphere without the exposure to the elements. Contact us for a price.
• Timber Decking — £1,500 — complete the space with a professionally installed pressure treated timber deck beneath your gazebo or veranda. Based on the full footprint of 3.78m x 2.978m (11.26m²), sealed with Smart Seal as standard. A clean, finished floor that ties the whole outdoor space together.
• Composite Decking Upgrade — upgrade to a premium low-maintenance composite deck 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 installed outdoor lighting scheme to your gazebo or veranda. From subtle downlighters to atmospheric feature lighting, we design and install the full package. Contact us for a price.

Technical Specifications

• External Width: 3.78m (12’ 5")
• External Depth: 2.978m (9’ 9")
• Internal Width: 3.57m (11’ 8")
• Internal Depth: 2.873m (9’ 5")
• Internal Area: 10.26m²
• 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.