Your garden

deserves better

than just grass.

Featuring OneForm™ - the future
of efficient timber construction.

Designed by qualified timber architects.

UK's quickest & most affordable garden room solution.

Everything you need to build your own space.

Architect-designed. Precision-cut. Delivered ready to build.

Built on our OneForm™ system for strength, efficiency and precision.

You don’t need an extension — you just need smarter space.

Expanded build diagram

OneForm™

Our architecture-led
build system

Every Beyond The Lawn design is built on OneForm™ — a structural framework developed by qualified architects to make garden rooms stronger, faster and simpler to build.

  • Developed for strength, efficiency and precision

  • Standardised detailing for predictable, fast builds

  • Optimised material use to keep costs down

  • Precision-cut components from our UK fabrication partner

  • Build it yourself or use a contractor

  • Compatible with your choice of cladding, glazing and finishes

Our Designs

Stop Mowing. Start Living.

We believe garden rooms shouldn’t force a choice between quality and cost — or between design and delivery.
They should be smart, elegant and efficient from start to finish.

GladE series

Monteverde series

daintree series

TTDS Kits are Different

More choice doesn’t mean better results -just higher costs.

Most garden room companies start with a basic box and let you customise your way into something usable. Every tweak adds complexity, compromises performance, and pushes the price up.

TTDS kits are different. Each one is architecturally resolved from day one,  balancing light, structure, acoustics and thermal performance before anything is built. No guesswork. No creeping upgrades. No expensive fixes later.

You’re not paying to solve problems, you’re starting with a plan that already works.

Our process

Why kit building is

the smart choice

With Beyond The Lawn’s OneForm™ kits, you get the precision of architectural design — without the custom cost. Every component and connection is optimised for performance, speed and build simplicity.

1. Configure Your Design

Choose your garden room style and size from our ever- growing range, or speak to us about bespoke options.

2. Chose Your Route

Download the digital plan, order the materials, or request a full quote with materials and contractor referral.

Includes:
• Detailed architectural plans

• Material and cutting lists

• Step-by-step build guidance

• Everything required for DIY or contractor installation

3. Build With Confidence

Use you the construction kit to build it yourself or request a quote estimate from a selection of our accredited contractors to get it built professionally. Our accredited supplier and installer network helps you source structure, insulation, cladding, doors, glazing and lighting — right through to a watertight finish delivered to your site.

The result is a complete, compliant build you can trust, with optional interior and fit-out support when you’re ready to make it yours.

DIY DIGITAL KIT

£ 299

Pick your garden room style and size and receive the following in a digital download.​

  • Plans & Details

  • Cut Lists

  • Material Quantities

  • Guidebook

  • Build Planner

KIt + quote service

Free Quote

All digital kit items + supplier and contractor quote facilitation.

  • Timber Material Supply

  • Factory-Made Pre-Insulated Panels

  • External Cladding & Battens

  • Windows, Doors & Lighting

  • Timber Builder Referral

bespoke designs

From minor window adjustments to full bespoke concepts, we can create the garden room of your dreams — with beautiful 3D renders and everything included in your digital kit, without the additional cost of commissioning an architect.

Testimonials

The Timber Design Studio

Amar Litt

"Excellent quality work, extremely responsive, and genuinely easy to deal with. What more do you want?"

Ella Thompson

"Luke and the team made the whole process so simple. Every change I wanted was handled without fuss, and the installers even said it was one of the best designs they’d ever worked with."

Gareth Lloyd

"We’ve worked with TTDS/Beyond The Lawn for years, and they always deliver – detail-driven, easy to work with, and spot-on when deadlines are tight. They’ve been fundamental to the success of several of our projects."

Work With Us

Become a TTDS & Beyond The Lawn
Trade Affiliate

Are you a builder, carpenter, manufacturer, trade supplier or interior designer?

The Timber Design Studio is building a trusted national network of independent tradespeople installers, carpenters and small builders who want consistent work, high-quality plans, and hassle-free clients.

If you're reliable, take pride in your craft, and want access to qualified garden room leads without fighting on price, we want to hear from you.

Have questions?

Frequently asked questions

Do I need planning permission for a garden room in the UK?

Most garden rooms in the UK fall under Permitted Development Rights and don’t require planning permission — provided they meet certain height and placement rules (for example, not exceeding 2.5m high if within 2m of a boundary). Our garden rooms are all designed to not need planning permission, being under 2.5m. However, larger structures or those intended for full-time living may require permission. Always check with your local planning authority before you start.

How much does it cost to build a timber garden room in 2025?

Costs can vary depending on size, specification, and finish. As a guide, a self-build timber garden room in 2025 typically ranges from £8,000–£25,000, including materials. Premium finishes, insulation upgrades, and bespoke designs may increase this.

Can I customise the size and layout of my timber frame kit?

We have an ever growing range of downloadable kits with an aim to have a design to suit anyone's need. However, our kits are designed to be flexible and with our ‘bespoke’ option you can adjust dimensions, wall placements, and door/window configurations to suit your garden and purpose. We can also create fully bespoke layouts upon request.

Is insulation included in your garden room kits?

Yes – all our kits are designed to include 70–90mm PIR insulation, a high-performance rigid board that meets industry standards and provides excellent thermal efficiency. If you’re working to a specific budget, our construction guide also outlines more cost-effective alternatives to help you find the right balance between performance and price.

What’s included in the Beyond The Lawn digital kit?

The digital kit includes full construction layout drawings, 3D visualisations, fabrication drawings, build program template, cut lists, and material schedules — plus a step-by-step assembly guide. We also offer sourcing recommendations for local material suppliers and installers.

Can I install the garden room myself or do I need a contractor?

Our kits are designed specifically with self-builders and confident DIYers in mind. Each one comes with detailed step-by-step instructions, 3D diagrams, and full material lists, making the process straightforward even if you’ve never taken on a project of this scale before. Many of our customers enjoy the satisfaction of building their own garden room — saving thousands on labour while learning valuable skills along the way. If you’d rather leave the hard work to the pros, we can also connect you with trusted local installers who are familiar with our system and can take the project from start to finish.

Do your kits comply with UK building regulations?

Yes — our designs follow key principles of UK Building Regulations for structural integrity, insulation, and ventilation. If your build exceeds the permitted size or is used as habitable accommodation, additional checks may be needed.

How long does it take to build a garden room from your kit?

A standard single-room build typically takes 5–10 days for a DIY assembly, depending on weather and experience. Professional builders can often complete it faster.

Where do you deliver your garden room kits in the UK?

All our kits are supplied digitally, giving you instant access to your plans, drawings, and material specifications once you order. We don’t ship physical kits, but we do offer an additional service supplying recommendations for local timber suppliers and experienced installers throughout the UK — making it easy to source materials and complete your build wherever you’re based.

What kind of foundations are required for a timber garden room?

Our kits are designed to work best with concrete pad systems like Easypad or Swiftplinth, providing a quick, level, and durable base with minimal groundwork. We do also cover alternative foundation options such as ground screws, blocks and concrete slabs in the guidebook, so you can choose what suits your site and budget.