Extend your living space with a pergola or veranda

In Switzerland, where sunny days are precious, a pergola or veranda lets you enjoy your outdoor space from spring through autumn — or even all year round. These structures turn your terrace into a genuine living area, sheltered from sun, rain and wind. The key is choosing the right type of installation and meeting local building requirements.

What is a pergola? And a veranda?

These two structures serve similar purposes but differ in design:

A pergola is an open or semi-open structure, either attached to the house or freestanding. It provides shade and, depending on the model, rain protection. The main types include:

Bioclimatic pergola: fitted with adjustable aluminium louvres, it controls light and ventilation. When closed, it keeps the rain out. This is the most popular model in Switzerland thanks to its versatility.
Aluminium pergola with retractable canopy: lighter, with a waterproof fabric that folds away in fine weather.
Wooden pergola: natural charm, often in treated pine, larch or oak. It blends well into traditional or Alpine gardens but requires regular upkeep (stain or oil every 2–3 years).
Freestanding pergola: independent of the house, it can be placed anywhere in the garden to create a relaxation area, dining spot or spa shelter.

A veranda is a fully enclosed, glazed extension of the house — heated or unheated. It forms a proper additional room:

Aluminium and glass veranda: today’s standard, with slim profiles that maximise natural light. Double or triple glazing for thermal insulation.
Wood and glass veranda: warmer in character but requires more maintenance. Popular in rural and mountain areas.
Flat-roof veranda: contemporary design, often combined with an integrated blind to manage summer heat.

Why hire a professional?

Building a pergola or veranda involves much more than simple assembly:

Building permits: in Switzerland, all verandas and most fixed pergolas require planning permission. Rules vary by canton, zone (residential, agricultural, protected) and footprint. A professional prepares or helps you prepare the application.
Structural calculations: snow load is a critical factor in Switzerland. Depending on your altitude and region (SIA 261 snow zones), the structure must be sized for the snow load of your site. Correct engineering is essential.
Waterproofing and building junction: the join between the pergola or veranda and the existing facade must be perfectly sealed to prevent leaks. This calls for skills in flashing and masonry.
Insulation and glazing: for a veranda used year-round, the choice of glazing (U-value, solar factor), base insulation and heating system is decisive for comfort and energy costs.
Aesthetic integration: a professional designs a structure that harmonises with your home’s architecture and your municipality’s landscape requirements.
Trade coordination: a veranda often involves several specialities — masonry, flashing, electrics, glazing. A professional coordinates the entire project to avoid delays and defects.
Materials suited to the climate: in Western Switzerland, temperature swings between summer and winter are significant (–10 °C to +35 °C). A specialist selects materials and glazing adapted to these thermal demands, ensuring both comfort and durability.

Seasonal calendar in Western Switzerland

The timing of your installation has a direct impact on the build process and comfort of the work:

March to May: ideal period to launch your project. Temperatures are rising, and the ground is workable. This is also the time to submit your building permit application so you can enjoy your pergola or veranda by summer.
June to August: peak season for installations. Conditions are optimal for outdoor work, but lead times may lengthen due to high demand, so plan ahead.
September to November: an excellent period for veranda installation, as tradespeople have more availability. You will enjoy your new space from the first cool autumn days.
December to February: structural work (foundations, masonry) is inadvisable during frost. However, this is the perfect time to plan your project, obtain quotes and prepare your building permit application.

Practical tip: a custom bioclimatic pergola or a veranda requires manufacturing lead time. Start your project early in the year if you want to enjoy it in summer.

If you are also considering a timber or stone terrace or rethinking your entire landscaping, coordinating these works with your pergola or veranda installation saves time and ensures a harmonious final result.

How it works

Step 1: Describe your project

Specify the type of structure you want (bioclimatic pergola, glazed veranda, wooden pergola, etc.), the approximate dimensions, the orientation of your terrace, and the intended use (dining area, lounge, summer kitchen). Also mention whether you already have an existing slab or terrace.

Step 2: Your request is passed on and you receive a free quote

SOS Jardin passes your request on to a professional gardener-landscaper in your area. They contact you, assess your configuration and wishes, and provide a detailed free quote covering materials, labour and any preparatory work, with no obligation.

Step 3: The professional carries out the work

The professional you choose handles the construction of your pergola or veranda, from the building junction to finishing touches, in compliance with regulations.

What affects the price

The price depends on the type of structure, its dimensions, the materials and the chosen options:

Type of structure: a retractable-canopy pergola, a bioclimatic louvred pergola, a wooden pergola and a glazed veranda are very different projects.
Surface and dimensions: the larger the structure, the more materials and labour it requires.
Materials and glazing: aluminium, wood, single, double or triple glazing, insulation level and heating.
Options: integrated LED lighting, side blinds, sliding glass panels, radiant heating or smart motorisation.
Site conditions: access, slope, existing slab or terrace, and any foundation work (concrete slab, terrace reinforcement).
Administrative fees: building permit fees come on top of the works.

The free quote gives you a precise figure for your own project.

Frequently asked questions

Do I need a building permit for a pergola in Switzerland?

In most cantons, yes. Even an open pergola fixed to the ground is classed as a structure and requires authorisation. The criteria vary (footprint, height, distance from property boundaries, zoning): check the municipal regulations with your commune. Some municipalities tolerate lightweight, removable structures without a permit, but it is always best to check with your local building department before starting.

What is the difference between a bioclimatic pergola and a veranda?

A bioclimatic pergola remains an open or semi-open space. Even with sliding glass side panels, it is not legally considered a habitable room. A veranda is a fully enclosed, glazed extension integrated into the building, which can be heated and used as a living space all year round. Verandas are subject to stricter insulation and energy-efficiency requirements.

How long do the works take?

The duration depends on the type of structure and its complexity. A standard pergola is much quicker to install than a custom bioclimatic pergola, and a veranda takes longer still (foundations, electrical connections, heating, interior finishing). The professional gives you a schedule with the free quote.

Can a bioclimatic pergola withstand snow?

Quality models sold in Switzerland are engineered to handle snow loads in accordance with SIA standards. Depending on your location, the structure is rated to resist the snow load of your site. During heavy snowfall, the louvres in the closed position let snow slide off, or an automatic snow-clearance system is fitted. Make sure the manufacturer confirms compliance with Swiss standards.

Can a pergola be installed on an existing terrace?

Yes, in most cases. If your terrace is concrete, paved or wooden on a load-bearing substructure, a professional can fix the posts directly onto it using base plates. If the terrace is on adjustable pedestals or gravel, point foundations (concrete pads) will be needed. A preliminary inspection determines the best solution without damaging the existing surface.

Do a pergola and veranda increase property value?

Often, yes. A well-integrated pergola or a habitable veranda adds living space and comfort, which are highly valued selling points, especially in areas with good sunshine (Lake Geneva arc, central Valais).

Can a pergola be combined with a carport?

Yes, it is entirely possible to design a project combining a pergola attached to the house with an adjoining carport or car shelter. Some aluminium structures allow the two to be linked for architectural consistency. This can also simplify the administrative process by combining permit applications.

How do you manage heat inside a veranda in summer?

In Western Switzerland, summer temperatures can make a poorly designed veranda uncomfortable. Several solutions exist: interior or exterior blinds (exterior blinds are more effective as they block heat before it reaches the glass), solar-control glazing (reduced g-factor), natural ventilation via motorised opening panels, or a roof with adjustable louvres. A good professional incorporates these features at the design stage to avoid the greenhouse effect.

Pergola & Veranda in Western Switzerland