What determines the price of a bathroom renovation?

A bathroom renovation is one of the most expensive renovations per square metre. This is because the bathroom combines demanding waterproofing work, precision tiling, plumbing and electrical work. Many factors influence the cost of a bathroom renovation.

Most of the cost comes from labour. Waterproofing, tiling and plumbing are precision tasks that must be done carefully. Properly executed waterproofing and tiling ensure that no moisture damage occurs in the future.

Material level significantly affects the price. Basic quality tiles and fixtures are more affordable, while designer products and premium tiles raise the cost. The choice of shower enclosure and water fittings also affects the final price.

Housing company regulations and pipe age can increase the cost. In older buildings, plumbing may require more extensive renewal, and the housing company may have specific requirements for waterproofing or fixture placement. These factors can significantly affect the final price.

The bathroom renovation calculator uses typical cost ranges from renovations carried out in the Helsinki metropolitan area. The estimate is not the “cheapest possible” or “most expensive possible”, but a realistic price range based on our experience.

How does the bathroom renovation calculator work?

Size and property type

The calculator takes into account the bathroom area and property type (apartment, terraced house, detached house). Prices in apartments are typically slightly lower; in detached houses, higher.

Room condition

A room in good condition requires less preparatory work. A bathroom in fair or poor condition may require more extensive repairs, which increases the price.

Renovation scope

A surface renovation is the most affordable, a full renovation mid-range, and an extensive renovation (including structural changes) the most expensive option.

Material level

Basic materials are more affordable. Premium materials and designer fixtures significantly raise the cost – by up to 50%.

Bathroom renovation price examples

Example 1

Small bathroom

• Size: 4 m²
• Apartment building
• Full renovation
• Basic materials

€6,000–10,000

incl. labour and materials

Example 2

Medium bathroom

• Size: 6 m²
• Terraced house
• Full renovation + WC
• Quality materials

€12,000–18,000

incl. labour and materials

Example 3

Large bathroom + sauna

• Size: 10 m²
• Detached house
• Extensive renovation
• Premium materials

€25,000–40,000

incl. labour and materials

Common bathroom renovation budget mistakes

Underestimating waterproofing

Waterproofing is the most critical phase of a bathroom renovation. Neglecting it can lead to costly moisture damage. Quality waterproofing is not worth skimping on.

Forgetting material costs

Many focus only on labour costs. Tiles, fixtures, taps and a shower enclosure can easily account for 40–50% of the total price.

Overestimating the existing condition

Surprises may lurk beneath the surface: moisture damage, poor substrate or outdated plumbing. Reserve 10–20% of the budget for unexpected repairs.

Forgetting housing company requirements

In apartment buildings, the housing company may have specific requirements for waterproofing and material choices. These must be clarified before the renovation.

Forgetting the household deduction

The household deduction can save up to €1,600–3,200 per household. Remember to request an itemised invoice and declare the deduction in your tax return.

Too tight a schedule

A bathroom renovation typically takes 2–4 weeks. Waterproofing and grouting require drying time that cannot be accelerated.

Frequently asked questions about bathroom renovation costs

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