How to Choose the Best Garden Room Company: 10 Questions to Ask Before You Buy
Not all garden room companies are the same. Learn the key questions every homeowner should ask before choosing who to trust with their garden room project.
Investing in a garden room is a significant decision.
Whether you’re creating a home office, gym, studio, treatment room, or additional living space, choosing the right company is just as important as choosing the design itself.
A quick online search reveals hundreds of garden room providers, all claiming to offer the best quality, the best value, and the best service.
So how do you separate a genuinely high-quality garden room company from the rest?
Here are ten questions every homeowner should ask before signing a contract or paying a deposit.
Quick Answer
The best garden room company isn’t necessarily the biggest or the cheapest.
Look for a company that uses high-performance construction materials, offers transparent pricing, can demonstrate genuine completed projects, understands foundations and planning requirements, and provides direct accountability throughout the build.
Companies should be able to explain exactly how their buildings are constructed, what is included within the advertised price, and who will actually be responsible for building your garden room.
1. Who Will Actually Build Your Garden Room?
Many homeowners are surprised to discover that the person they initially speak with disappears once the contract is signed.
Some companies operate large sales teams and outsource installation work to third-party subcontractors.
There’s nothing inherently wrong with this model, but it’s important to understand who will ultimately be responsible for delivering your project.
At Backyard Cabins, Nick oversees the client-facing side of the business and remains closely involved throughout the build process. Meanwhile, Matthew manages the planning, administration, systems and operational side behind the scenes.
This approach allows us to maintain quality control and accountability from initial enquiry through to final handover.
2. What Is the Actual Construction Specification?
Not all garden rooms are built the same way.
Many companies simply describe their buildings as “fully insulated” without explaining what that actually means.
Questions worth asking include:
What type of structure is used?
How thick are the walls?
What insulation system is installed?
What roofing system is included?
What type of glazing is provided?
Our cabins are constructed using 97mm Structural Insulated Panels (SIPs), comprising a 75mm continuous polyurethane insulation core bonded between structural OSB boards.
Combined with premium Thermowood cladding, high-quality double glazing and durable EPDM roofing, this creates a highly insulated structure designed for genuine year-round use.
3. Is the Price Transparent?
One of the biggest frustrations in the garden room industry is discovering additional costs after receiving an initial quote.
A garden room advertised at one price can quickly become far more expensive once flooring, heating, foundations, electrics, installation and VAT are added.
Always ask:
Is VAT included?
Is flooring included?
Is heating included?
Is installation included?
Are there any likely additional costs?
We believe pricing should be clear from the outset. That’s why we display both ex-VAT and VAT-inclusive pricing and clearly explain what is included within every cabin package.
4. Can They Show Real Completed Projects?
A portfolio should contain more than computer-generated renders.
Look for genuine projects, completed installations and real-world examples of previous work.
These provide valuable insight into:
Build quality
Attention to detail
Design capability
Site management
Problem-solving ability
At Backyard Cabins, we regularly document completed projects across Berkshire, Surrey, Oxfordshire, Wiltshire and West London, including bespoke builds and challenging installations where careful planning was required.
5. Can They Explain the Thermal Performance?
Many companies advertise their buildings as “fully insulated”, but few explain the actual thermal performance of the finished structure.
One useful question to ask is:
What is the U-value of the finished wall assembly?
A lower U-value indicates better thermal performance.
As a guide:
Typical shed or log cabin: Often above 1.50 W/m²K
Modern house extension: Around 0.28 W/m²K
High-performance garden room: Around 0.25 W/m²K
Our standard wall build-up achieves a finished wall assembly U-value of approximately 0.25 W/m²K, helping create a comfortable, energy-efficient environment throughout the year.
6. Do They Understand Planning and Permitted Development?
Most garden rooms can be installed under permitted development rights, but every property is different.
A good company should understand:
Common permitted development requirements
Height restrictions
Boundary considerations
Situations where planning permission may be required
Our standard cabin range is designed to remain below 2.5 metres in height, helping many projects fall within permitted development guidelines, subject to the circumstances of the individual property.
7. Can They Handle Challenging Gardens?
Very few gardens are perfectly flat with unrestricted access.
Common challenges include:
Sloping lawns
Narrow side access
Tight corners
Existing landscaping
Restricted boundaries
This is where experience becomes important.
We frequently use ground screw foundations where appropriate. These can often reduce excavation requirements, minimise disruption and provide a practical solution for uneven ground.
We’re also currently completing projects where careful site logistics and SIPs construction methods allow materials to be transported through restricted access routes that would be difficult for larger pre-manufactured structures.
8. What Warranty Is Included?
A garden room is a long-term investment.
Before proceeding, ask:
What warranty is included?
What does it cover?
How long does it last?
Backyard Cabins provides a 10-year structural warranty, reflecting our confidence in both the materials we use and the way our cabins are constructed.
9. How Long Will the Build Take?
Build times vary significantly across the industry.
Ask:
How long will installation take?
What preparation is required beforehand?
What factors could affect the schedule?
Because our cabins utilise SIPs construction and can often be installed on ground screw foundations, many standard models can be completed within approximately 10–15 working days once foundations are prepared.
10. Will the Final Electrical Connection Be Straightforward?
This is a detail many homeowners overlook.
A good garden room company should make the final electrical connection process as simple as possible.
Our cabins are supplied with first-fix electrics already installed, including sockets, lighting circuits and an internal consumer unit.
Once the structure is complete, your electrician simply connects the cabin to the property’s electrical supply, making the final stage straightforward and efficient.
Why Smaller Can Sometimes Be Better
There are many excellent garden room companies operating in the UK, and larger companies often offer impressive showrooms, extensive marketing, and a wide range of standard designs.
However, one advantage of working with a smaller specialist company is simplicity and direct accountability.
With larger organisations, it’s common to deal with multiple departments throughout a project. The person who provides the initial quotation may be different from the project manager, who may be different from the installation team, who may be different from the person handling aftercare.
At Backyard Cabins, things are deliberately simpler.
From your initial enquiry through to completion, you’ll deal directly with the people responsible for delivering your project. Questions are answered quickly, decisions can be made efficiently, and if something needs discussing, you can speak directly to the people who know the project inside out.
This also gives us greater flexibility. We can adapt designs, solve site-specific challenges, and make sensible decisions throughout the build without layers of management or lengthy approval processes.
For many of our clients, that direct relationship and personal service is one of the biggest advantages of working with a small, specialist team.
Final Thoughts
The best garden room company isn’t necessarily the largest, the cheapest or the one with the biggest marketing budget.
It’s the company that combines quality materials, transparent pricing, genuine craftsmanship and a commitment to delivering a great result.
Take your time, ask questions, compare providers and choose a company you trust.
A well-designed garden room should enhance your home and lifestyle for many years to come.
Thinking About a Garden Room?
Whether you’re considering a compact home office or a larger multi-functional garden room, we’re always happy to discuss your project.