Radon
An address report says the radon probability is higher in this band. Has anyone measured the radon in this house for three months?
No. Nobody has measured the radon in this house for three months just because an address report says the probability is higher in this band. That report is an area-style probability for the address, not a detector left in the rooms. The survey has not carried out a radon test, and it has not been given a three-month result to interpret. UKradon publishes maps and explains an Action Level and a Target Level without this visit turning either into a reading for the living room. The house itself remains unmeasured.
Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.
What is the fuller explanation?
A higher band on an address report is a probability for that product, not a concentration in the hallway. Radon varies with the ground, the floor and how the house is ventilated, which is why a measurement over months is a different product from a search. The home survey can mention that a report of that kind is in the pack. It cannot convert the band into a reading, and it should not pretend a short visit was a monitor.
If you want a measurement, that is a detector placed in the house for the period the measurement scheme requires, not a sentence added to the survey. Ask the solicitor whether any previous result exists and, if it does, for which rooms and which dates. Do not tell a lender that the address report has already measured the property. Keep the probability band and any future monitor as separate papers. The survey's job stops at recording that the band was supplied and that no three-month test was seen.
What should you ask your surveyor?
- Was any radon detector or three-month result included in what you saw?
- Are you treating the address band as probability, not as a room reading?
- Which rooms would a later measurement need to cover if one is instructed?
What are the typical next steps?
- Read the address report as a probability band, not a measurement.
- Ask whether any three-month result already exists for this house.
- Do not describe the survey visit as a radon test.
Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.
Also asked about this
If a neighbour has a result, does that measure this house?
No. A neighbour's result belongs to that building and that monitor. It can be background conversation. It is not a three-month measurement of the rooms you are buying, and the survey has not adopted the neighbour's paper as one for you.
Does a newer window change the band on the address report?
No. The band is about the address product you were given, not about a window. Replacing glazing does not rewrite that probability and does not create a measurement the survey never saw. The house stays unmeasured until a detector is actually used there.