NEN 3140 and SCIOS inspection costs

A NEN 3140 inspection or SCIOS Scope 8 inspection of a small business premises costs from about €350 to €600 excluding VAT. A SCIOS Scope 10 inspection for fire risk starts at about €350 to €400 and rises to €2,500 for large buildings. Inspecting electrical hand tools costs about €6.50 to €11.50 per item. The price depends mainly on the number of distribution boards, the floor area and the sector.

These are indications from published prices of inspection companies and an insurer, not fixed rates. There is no national rate for NEN 3140 inspections. For details on what is checked, read NEN 3140 inspection and SCIOS Scope 10. You can find certified companies in the SCIOS register .

All amounts on this page are indications, published by providers in 2026 or earlier. Always request at least two quotes for your own premises. The cost of repairs comes on top.

What does a NEN 3140 or Scope 8 inspection cost?

Inspecting the fixed installation costs less for a clear premises with one meter cabinet. Each extra distribution board adds measuring and inspection time.

Situation	Indication	Source
Premises with one meter cabinet	From about €350 to €420	Inspection companies, excl. VAT where stated
Business premises with several distribution boards	About €420 to €840	Inspection company
Production site or large building	Above €840, tailor-made	Inspection company
Scope 8 via insurer	From €584.25 excl. VAT	Interpolis

What does a SCIOS Scope 10 inspection cost?

For Scope 10, the sector and floor area count for more, because the inspector checks the whole building for fire risk and uses thermography. Interpolis uses a calculator tool based on sector, square metres and number of distribution boards.

Situation	Indication (excl. VAT)	Source
Small premises, for example an office or shop	From about €350 to €399	Inspection companies
Medium-sized premises, for example hospitality or light production	About €500 to €900	Inspection company
Large or complex premises	From €900, in most cases up to €2,500	Inspection companies

What does inspecting electrical hand tools (Scope 9) cost?

Tools and devices are charged per item. The more items per visit, the lower the price per item.

What	Indication	Source
Hand tools and small devices	About €6.50 to €11.50 per item	Inspection company
Heavier machines on 400 V	About €17.50 per item	Inspection company
Minimum charge per visit	About €225	Inspection company
Scope 9 via insurer	From €527.25 excl. VAT	Interpolis

You can read more about intervals and the register on inspection of electrical equipment.

What sets the price of a NEN 3140 or SCIOS inspection?

Inspection companies name the same factors each time. Knowing them helps you understand why two quotes can differ so much.

Factor	Effect on the price
Number of distribution units	Each cabinet is inspected and measured separately
Floor area of the premises	More square metres means more time and more wall sockets
Sector and risk profile	Production and hospitality take more time than an office (mainly for Scope 10)
Accessibility	Cabinets in crawl spaces or locked rooms take extra time
First or repeat inspection	A known installation with good diagrams goes faster
Location	Interpolis charges a surcharge for the Wadden Islands

Worked example: NEN 3140 and SCIOS for an SME

A fictional installation company has premises with an office and workshop, three distribution boards and 60 pieces of electrical hand tools. The insurer requires Scope 10. This is how the budget looks, based on the indications above:

Item	Indication	How often
Scope 8 inspection, three distribution boards	About €420 to €840	Every 3 to 5 years
Scope 10 inspection, medium-sized premises	About €500 to €900	Every 3 to 5 years, according to the policy
Inspection of 60 hand tools	About €390 to €690	Yearly or more often
Repair of defects	Unknown until after the inspection	After each inspection

In the year of the major inspection, this company therefore comes to about €1,300 to €2,400 excluding repairs. In the years in between, only the tool inspection remains.

How to save on inspection costs

Combine Scope 8 and Scope 10. Interpolis mentions a combination discount of up to 40%. Other inspection companies also plan both in one visit.
Keep diagrams up to date. Then the inspector does not have to work out how the installation is built.
Gather the tools in one place. That takes less time than walking through the whole company.
Have your own VP inspect. With a designation and measuring equipment, this can be cheaper if you have a lot of tools. Do include training and calibration in the calculation.
Set well-founded intervals. An office does not need inspecting as often as a building site.

Hidden costs of NEN 3140

The inspection itself is often not the largest item. Also consider:

Item	Why
Repair of defects	An installer charges their own hourly rate and materials
Downtime	Some measurements require a short switch-off of circuits
Training of IV, VP and VOP	Courses and refresher courses for the people you appoint
Standards	If you want to read NEN 3140 or NEN 1010 yourself, you buy them from NEN
Time of the IV	Planning inspections, following up repairs, keeping documentation

Common mistakes when comparing quotes

Looking only at the starting price. Ask what is included: how many distribution boards, thermography, report, re-inspection.
Forgetting VAT. Not every provider states whether prices include or exclude VAT.
Not checking the SCIOS certificate. Your insurer may not accept a cheap inspection without a certificate for Scope 10.
Not budgeting for repairs. Reserve budget for the findings.

Frequently asked questions about NEN 3140 costs

How often do you pay for a NEN 3140 inspection?

The fixed installation and Scope 10 are usually inspected once every three to five years. You inspect tools more often, often yearly. Spread the costs by planning the tool inspection every year and combining the major inspections.