The new condition report rules in Norway in 2026: what changed

Two changes apply to the condition report in Norway from 2026. From 1 January 2026, the report must describe both the cause and the consequence of every TG2 and TG3 deviation, and give a repair cost estimate for each TG3. From 1 July 2026, NS 3600:2025 is the mandatory standard when a home is sold. Both changes give you, the buyer, a clearer picture of what you are actually buying.

A condition report (tilstandsrapport) is a technical assessment of the home written by a qualified surveyor before the sale. It assigns a condition grade from TG0 to TG3 to each part of the home. The new rules do not change the scale itself, only what the report must tell you about each item.

Cause and consequence for every TG2 and TG3

From 1 January 2026 it is no longer enough to write that the bathroom is TG2. The report must state why (for example a missing membrane) and what it leads to (risk of moisture damage in the structure). The requirement covers both TG2 and TG3.

This makes it easier to understand how serious a deviation really is. Two bathrooms can both be TG2, one because the tiles are worn and the other because there is no waterproofing behind the wall. With cause and consequence, you see the difference at once.

A cost estimate for each TG3

For every TG3 deviation, the report must now include a repair cost estimate. TG2 items get no such estimate, so you price those yourself. The TG3 estimate is an approximate figure, not a binding quote.

Deviation	Requirement from 2026	What you do
TG2	Cause and consequence	Price it yourself, ask the surveyor
TG3	Cause, consequence and cost estimate	Use the estimate as a start, get your own quote

Use the estimate as a guide, and get your own price from a tradesperson before you bid on a home with several TG3 items. The sum of the TG3 estimates and the TG2 items you price yourself is your real maintenance need.

NS 3600:2025 mandatory from 1 July 2026

The report is built on a standard called NS 3600. It defines what the surveyor must examine and how the condition grade is set. From 1 July 2026, the NS 3600:2025 edition is the only permitted standard for technical condition analysis when a home is sold.

The criteria in the new standard are stricter. A report made under NS 3600:2025 can therefore give more TG2 and TG3 grades than an older report on the same home. That is not because the home is worse, but because the assessment is more precise and more deviations are made visible.

What a good report now contains

When you read a report made under the new rules, look for this:

• Every TG2 and TG3 has an explanation of cause and consequence, not just a number.
• Every TG3 has a cost estimate.
• The dates: when were the bathroom, roof and pipes last done? Old wet rooms and old drainage are the costly surprises.
• Items that were not inspected. An area the surveyor could not reach is a gap in your knowledge.

A better report works in your favour. You get an explanation and a price for the findings before the bidding round, instead of discovering them after takeover. If a hidden defect that was not in the report still appears, the usual deadlines under avhendingslova apply.

Heimer reads the sales prospectus and surfaces every TG2 and TG3 finding with cause, consequence and cost, alongside total price and monthly cost. Paste the listing.