Building a Garden Studio: Insights After Six Months

Creating a garden studio can be an excellent solution for maximizing outdoor space while providing a functional area for work or leisure. After six months of using our 18 m² garden studio, we have gathered valuable insights that could help others considering a similar project.

The total investment for our garden studio was €22,500, which included essential components such as foundations, electrical work, and enhanced insulation. We use the studio as a workspace four days a week and rent it out on Airbnb for three months during the summer, generating an annual gross income of €4,200.

A key takeaway from our experience is that quality insulation pays off quickly, often within a single winter. It’s advisable to avoid low-end kits if year-round comfort is a priority. Additionally, proper foundation preparation is crucial; an inadequately prepared site can lead to cracks within two years. We opted for a concrete slab or adjustable footings to ensure stability.

The Underlying Need for a Garden Studio

Gardens often remain underutilized, and our experience was no different. Living in a 90 m² home in the suburbs of Lyon, my partner and I faced a significant challenge: a lack of quiet space for remote work. As a freelance graphic designer and a shopkeeper, we sought a quick solution that wouldn't require a construction permit (keeping it under 20 m²) and would fit within a budget of €15,000 to €25,000.

Concrete Choices: Selecting Our Studio

We established strict criteria for our studio. The usable area was set at 18 m² to comply with permit regulations. We favored a wooden frame for optimal insulation and soundproofing. After comparing three suppliers—Garden Studio, Koto, and Abris de Jardin Direct—we found that Koto offered the best price-to-quality ratio, while Garden Studio provided superior warranty options. Ultimately, we chose Garden Studio's "Cabane Lodge" model, which included reinforced insulation and an optional equipped kitchen.

The project included:

• Foundations: concrete slab (€1,800). This step should not be overlooked.
• Electricity: underground connection by a certified electrician (€1,200). A visible cable is unsafe and not covered by insurance.
• Insulation: rock wool plus double glazing (included in the quote), adding around €2,000 but paying off quickly in winter.

In total, we spent €22,500, adhering to a tight budget.

Results After Six Months: What’s Changed

On a daily basis, I work in the studio four days a week, enjoying the quiet and natural light without distractions. My partner uses it on weekends for DIY projects, making it a delightful space.

In terms of rental income, we list the studio on Airbnb for three months in summer and two weeks in winter, yielding a gross annual revenue of €4,200. This translates to an estimated return on investment of 5.3 years.

Thermal comfort has been satisfactory, with winter temperatures averaging 18°C using a small electric heater (costing about €35/month). During summer, the temperature peaked at 26°C, aided by a well-placed skylight. However, we did encounter condensation humidity issues in the initial months, which were resolved with a dehumidifier. The delivery time was also longer than expected, taking eight weeks instead of the six originally promised, but we managed to adapt.

Costs for a Turnkey Garden Studio

For a turnkey garden studio measuring between 15 and 22 m², including installation and electrical work, expect to pay between €18,000 and €30,000. Our experience suggests budgeting an additional 10 to 15% for unexpected expenses. For instance, we initially budgeted €20,000, but the costs for foundations and electrical work exceeded our estimates by €2,500.

Here’s a comparison of options:

| Criterion | Kit Studio (e.g., Leroy Merlin) | Turnkey Studio (e.g., Garden Studio) | |-----------------------|----------------------------------|---------------------------------------| | Average Price (20 m²) | €8,000 – €12,000 | €18,000 – €25,000 | | Assembly Time | 2 to 4 weeks (DIY) | 2 to 5 days (by the team) | | Warranty | 2 years (parts only) | 10 years (structure + labor) | | Suitable for | Experienced DIYers, tight budget | Those seeking convenience and peace of mind |

The Importance of Insulation in a Garden Studio

Initially, I considered skimping on insulation, but a friend's advice changed my mind. The price difference (around €2,000) is recouped in just one winter. Without reinforced insulation, heating costs would rise, and summer temperatures could become unbearable. Our studio, equipped with rock wool insulation and double glazing, remains comfortable year-round. According to a study by CSTB, effective insulation can reduce heating needs by up to 37%.

Common Mistakes to Avoid Before Purchasing

• Don’t overlook foundations: poorly prepared soil leads to guaranteed cracks within two years. We invested €1,800 in a concrete slab, and it was worth it.
• Check local zoning regulations: even without a permit, a prior declaration of work is mandatory. Consult your local council.
• Plan for electrical connections: visible cables are dangerous and not covered by insurance. Hire a qualified electrician.
• Match the size to your actual use: 15 m² may suffice for an office, but 20 m² is better for multi-purpose use (office + sleeping area).

Choosing the Right Model for Your Needs

• For intensive telecommuting: Koto’s "Studio Zen" model (enhanced sound insulation, 19 m², starting from €21,000).
• For seasonal rentals: Garden Studio’s "Cabane Lodge" model (double glazing, optional equipped kitchen, 22 m², €24,500).
• For a tight budget: Castorama’s "Atelier Bois" model (12 m², €5,500, DIY assembly, suitable for occasional use).

Frequently Asked Questions About Buying a Garden Studio

Is a building permit required for a garden studio?

No, as long as the area is under 20 m² (according to the ALUR law). However, a prior declaration of work is necessary even below this threshold.

What is the best material for a garden studio?

Wood is favored for aesthetics and insulation; metal allows for quick installation; concrete offers durability but at a higher cost. In my opinion, wood strikes the best balance.

Can I install a garden studio without foundations?

It is not recommended. The ground must be stable and drained. A concrete slab or adjustable footings are advisable. I’ve seen studios deform due to inadequate foundations.

Élise Dubois

With a lifelong passion for horticulture sparked in my grandmother's garden, I have pursued a career in landscaping and urban herbology, turning my fascination with plants into a vocation.