Interior renovation · VS

Interior painting in Sion

Interior painting in Sion: flats, villas and the old town, checks before sanding, end-of-lease repainting. Describe your work to request a quote.

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You are looking for a painter for a flat in the centre, a villa on the outskirts or a room in an older house: interior painting in Sion depends first of all on the condition of the surfaces. As the capital of Valais, the city combines old buildings at the foot of the Valère and Tourbillon hills with apartment blocks and villas. This matching service passes your request on to craftspeople in the region, who contact you to prepare a free, no-obligation quote.

Interior painting in Sion: the most common work

A painter’s trade is not limited to applying coats of colour. In Sion as elsewhere, much of the work is done before the first coat:

  • filling cracks and holes, repairing damaged corners;
  • applying plaster to restore a smooth surface;
  • removing old wallpaper, then preparing the wall;
  • painting walls and ceilings, woodwork, doors and radiators;
  • hanging new wallpaper, when the decor suits it;
  • treating surface damp, after looking for its origin.

In a home that is changing tenants, the request often centres on repainting the rooms white. In a house bought for renovation, you more often find walls that need reworking in depth, with several layers of old coatings.

Apartment blocks, villas and the old town: very different surfaces

Sion has apartment-block districts, villas and an old town, and these three settings are not painted in the same way.

In a rented apartment block, the surfaces are often large and repetitive: ceilings, living-room walls, corridors. The job is planned around occupancy, access via the stairwell and protection of the common areas.

In a villa, the work is more varied: staircases, attic rooms, sloping ceilings, woodwork, wet rooms. The walls have sometimes been repainted several times, and colour matching needs attention.

In the old town, thick, uneven walls, ceilings that are not square and old woodwork call for more painstaking work. A plaster poorly suited to an old surface can crack or trap damp. Describe the type of wall and the age of the building, and the painter will choose the preparation accordingly.

Dry climate and sun of the Rhône valley: what it changes indoors

Sion lies in the Rhône valley, with a dry, sunny climate that is hot in summer. For interior painting, several consequences follow from this context:

  • Rooms with strong sun exposure undergo large temperature variations, which stress plaster and paint near large windows.
  • Raking light highlights unevenness: the brighter the room, the more the preparation matters.
  • Woodwork and window sills exposed to the sun age faster than those in a north-facing room.
  • Dry air helps drying, but the painter must still respect the time between coats to avoid defects.

This does not rule out surface damp problems, particularly in a bathroom, a converted cellar or a wall against the ground. In that case, repainting without treating the cause is pointless: the quote must state what is treated and how.

Before sanding an older home in Sion: asbestos and lead

In a building from before 1990, old coatings (plasters, adhesives, paints) may contain asbestos or lead. This is a possibility, not a certainty, and only a survey can tell. It is carried out before sanding, scraping or drilling.

This point particularly concerns flats in older buildings and houses being renovated after a purchase. If you have any doubt, state the year the building was built in your request: a serious craftsperson will ask for this information anyway. Do not start stripping a coating whose composition you do not know.

Tenant, owner or co-owner: who decides on the paint?

In Sion, a good share of homes are occupied by tenants. A few useful pointers:

  • Tenant: ask the landlord’s agreement before changing colours or having a craftsperson come in. In a rented home, restoration at the end of the lease follows the rules on normal wear and tear. Marks of ordinary use cannot be charged to you; damage beyond wear may be. Keep photos of the condition of the walls on arrival and departure.
  • Owner of a flat in co-ownership: the interior of your unit belongs to you, but the common areas (stairwell, balconies, facade) fall under the co-ownership. Consult the rules before planning.
  • Owner of a villa: you decide on the interior alone, subject to the rules that apply to the building.

Permits and Valais rules for painting in Sion

Interior painting of an ordinary home does not in principle require a building permit. Things become more complicated if the work goes beyond simple repainting, for example in the case of a change of use or work on the building envelope.

In Valais, the building permit is issued by the municipality within the building zone, and by a cantonal commission outside it. If you also plan to repaint a facade, particularly in the old town, the colours may be imposed by the municipality. Ask the municipality of Sion before choosing an exterior colour. If you combine painting with insulation or energy work, the cantonal energy and hydropower service can advise on the cantonal subsidy programme: check the conditions with it before signing anything.

Describing your painting work in Sion and comparing quotes

The more precise your request, the more comparable the quotes will be. State:

  1. the type of home (flat, villa, old-town house) and the year of construction;
  2. the rooms to be painted, their condition (cracks, old wallpaper, signs of damp) and the ceiling height;
  3. what you want: repainting white, a change of colour, wallpaper, woodwork;
  4. whether the home is occupied or empty, and whether furniture needs to be moved;
  5. your status (tenant, owner, co-owner) and the date you would like.

A good quote details the preparation of the surfaces, the number of coats, the type of paint, the protection of floors and furniture, and the removal of waste. The cost varies mainly with the surface area, the condition of the walls, the ceiling height, the preparation time, the choice of products and access to the site. Two totals can only be compared if the services are the same: read the lines, not just the result.

When your description is ready, you can request a quote, free and without obligation.

Useful pages for your work in Sion

Updated 29 October 2026

Free, no-obligation quote request

Describe your project: your request is passed on to tradespeople in your area.

Frequently asked questions

Do I need a permit to repaint the inside of a flat in Sion?
Repainting the interior of an ordinary home is generally regarded as routine maintenance. The situation changes if the building is protected, if the co-ownership has rules governing the common areas, or if the work also affects the facade. If in doubt, ask the municipality of Sion.
My building dates from before 1990: should I be concerned before sanding?
In a building from this period, old coatings may contain asbestos or lead. Sanding then releases dangerous dust. Have a survey carried out before sanding or scraping, and mention it in your quote request.
As a tenant in Sion, can I repaint my home as I please?
It is better to obtain the landlord's written agreement before changing colours. At the end of the lease, restoration follows the rules on normal wear and tear: what counts as ordinary wear is not the tenant's responsibility. Any doubt can be settled with the letting agency or the owner.
Does Sion's dry climate make a difference for interior painting?
Dry air and strong sunshine can speed up drying and bring out flaws in walls near windows. The painter adapts the preparation and the choice of products to the exposure of each room. State the orientation and the condition of the walls in your request.
What should a quote for interior painting include?
It should state the rooms and surfaces concerned, the preparation of the surfaces (filling, plaster, sanding), the number of coats, the type of paint and the treatment of woodwork. It also specifies the protection of floors and furniture. Compare these items rather than the total alone.