Radon mitigation costs

Labour costs constitute the majority of radon mitigation costs.

According to a survey, the average cost of connecting sub-slab suction to radon piping installed during construction was EUR 500 (median). Those who did the work themselves paid EUR 200–300 for the equipment and accessories. Retrofitted sub-slab suction has cost EUR 2,500 on average. The sealing of structures is rarely used as the only measure, which is why there is not much cost information available on sealing conducted by an external supplier. The median price of sealing compounds is EUR 50. 

The costs of the improvement of ventilation vary greatly, depending on the extent of the measures. Adding replacement air vents is the least expensive measure, while the installation of a new mechanical supply and exhaust air device is the most expensive one.  Therefore, the cost range of typical ventilation improvement measures is wide: EUR 500–9,500 for work carried out by an external supplier and EUR 200–6,500 for materials and equipment.

The cost range is wide in all of the methods. Therefore, it is useful to ask for offers from several suppliers for radon mitigation. The contact information of companies that provide radon mitigation services can be found on the STUK website.

Total costs of radon mitigation conducted by an external supplier and material and equipment costs of self-made mitigation (partly or completely). N is the number of respondents, av. is the average, med. is the median, P25 is the 25th percentile and P75 the 75th percentile. The data were obtained from the Radon mitigation method efficiency survey.

 

External work (EUR)

Materials and equipment, self-made mitigation (EUR)

 

N

av.

med. (P25 – P75)

N

av.

med. (P25 – P75)

Connecting an extractor fan to radon piping

30

1,010

500 (300–1,500)

36

260

230 (150–300)

Sub-slab suction (exhaust duct through the floor slab)

26

3,440

2,350 (1,180–3,900)

23

440

300 (200–500)

Sub-slab suction (exhaust duct through footing)

9

4,560

2,790 (2,000–5,000)

6

180

150 (50–300)

Sealing of structures

4

760

1,000 (510–1,000)

22

90

50 (20–150)

Improvement of ventilation in living areas*

36

5,790

2,400 (480–9,490)

22

1,600

650 (200–6,500)

* Includes new supply and exhaust ventilation devices

 

Tax credit for domestic costs

Costs incurred from radon mitigation entitle to tax credit for costs of the work. For more information, see the instructions issued by the Finnish Tax Administration, www.vero.fi.

Radon mitigation subsidy

The Housing Finance and Development Centre of Finland (ARA) grants subsidies for the elimination of health hazards only in highly exceptional circumstances. The costs of radon mitigation alone seldom exceed the minimum cost limit.

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