Utopia Diamond Corner Pergola 3m x 3m | Pressure Treated Timber | Nationwide Installation Dunster house

Utopia Diamond Corner Pergola – 3m x 3m Pressure Treated Timber

Transform a neglected corner of your garden into a stunning outdoor retreat with the Utopia Diamond Corner Pergola by Dunster House. Crafted from slow-grown, fully pressure treated spruce, this beautifully engineered structure is built to endure the British climate for years to come — no annual treatment required.

The distinctive diamond-pattern roof design adds architectural elegance that sets this pergola apart from standard flat-top alternatives. Whether you’re creating a sheltered dining area, a garden bar, or a tranquil reading nook, the Utopia Diamond delivers premium kerb appeal and lasting structural integrity.

Professional installation is included as standard and available anywhere across Mainland UK — our experienced teams handle everything from groundwork preparation to final fitting, so you can enjoy your new outdoor space without the hassle.

Key Features

• ✅ Fully pressure treated timber — factory-treated for long-term rot and decay resistance
• ✅ Slow-grown spruce — denser grain for superior strength and durability
• ✅ Robust 70mm x 70mm uprights — exceptional stability in all weather conditions
• ✅ Distinctive diamond roof design — adds architectural character to any garden
• ✅ Corner-fitting design — maximises space efficiency in your garden layout
• ✅ Installation included as standard — professional fitting anywhere across Mainland UK
• ✅ Low maintenance — pressure treatment eliminates the need for annual re-staining

Specifications

• Overall External Dimensions: 3.321m x 3.321m (10' 10.75" x 10' 10.75")
• External Width: 3.13m (10' 3.25")
• External Depth: 3.13m (10' 3.25")
• Internal Width: 2.92m (9' 7")
• Internal Depth: 2.92m (9' 7")
• Overall Height: 2.15m (7' 0.5")
• Internal Eaves Height: 1.973m (6' 5.75")
• Upright Posts: 70mm x 70mm
• Timber: Slow Grown Spruce (Fully Pressure Treated)
• All sizes quoted are nominal

Why Choose Bespoke Oak and Slate?

At Bespoke Oak and Slate, we supply and install premium Dunster House timber garden structures across the UK. Every pergola comes with professional installation included as standard — no matter where you are in Mainland UK, our teams will come to you and ensure a perfect finish every time.

Frequently Asked Questions

Is the Utopia Diamond Corner Pergola pressure treated?

Yes. The timber is fully factory pressure treated against rot, decay, and insect damage. It arrives ready to install with no need for immediate staining or treatment, and requires far less ongoing maintenance than untreated timber.

Is installation included?

Yes — professional installation is included as standard with every order. Our experienced fitting teams cover the whole of Mainland UK, handling delivery and full assembly so your pergola is ready to enjoy from day one.

Do you install anywhere in the UK?

Yes. We install anywhere across Mainland UK — there are no location restrictions. Whether you’re in Cornwall or Caithness, our teams will come to you.

Does this pergola need planning permission?

In most cases, a pergola of this size falls within permitted development rights and does not require planning permission, provided it meets standard conditions (e.g. not covering more than 50% of garden area, not forward of the principal elevation). We always recommend checking with your local planning authority if you are unsure.

What is the pergola made from?

The Utopia Diamond is a Dunster House product, constructed from slow-grown spruce — a dense, strong timber well-suited to outdoor use. All timber is fully pressure treated for long-term durability in the British climate.

How thick are the posts?

The upright posts are 70mm x 70mm, providing excellent structural rigidity and a premium, substantial appearance.

What are the exact dimensions of this pergola?

The overall external footprint is 3.321m x 3.321m (approx. 10' 10.75" x 10' 10.75"), with an internal usable space of 2.92m x 2.92m. The overall height is 2.15m with an internal eaves height of 1.973m. All sizes are nominal.

Is this pergola suitable for a corner of my garden?

Yes — the Utopia Diamond is specifically designed as a corner pergola, making it ideal for fitting neatly into the corner of a garden, patio, or decking area to maximise your available outdoor space.

How long will delivery and installation take?

Lead times vary depending on your location and current demand. Please contact us directly for an accurate delivery and installation timeline for your area.

Can I add sides, screens, or a roof to this pergola?

Yes — the Utopia Diamond is compatible with a range of optional add-ons including side panels, privacy screens, and roofing options. Please contact us to discuss customisation options for your project.

Does the pergola come with fixings?

Yes, all necessary fixings are included. As installation is standard with every order, our professional team will handle the full build — you simply choose your spot and we’ll do the rest.