Electrics and gas
The oil boiler's filter bowl sits in a brick cabinet with no drip tray the surveyor could see. What leak containment was missing from the photograph?
A drip tray, or any other leak containment under the filter bowl, was missing from the photograph. The oil boiler's filter bowl sits in a brick cabinet, and the surveyor could not see a tray beneath it. The survey records that gap in the view it had. It has not tested the oil line, the fire valve or the boiler. It has not proved a leak that has not yet marked the cabinet. Missing containment is the note.
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?
The filter bowl is where oil is strained before it reaches the burner. If a seal weeps, a tray is what stops that oil soaking the base of the cabinet and the floor beyond. A brick cabinet without a visible tray is a containment gap the camera could record. It is not evidence that oil is leaking today, and it is not a service of the appliance. The home survey did not fire the boiler or inspect the internals of the bowl.
Ask an oil-heating engineer to service the boiler and to say what containment the filter bowl should have. Keep that visit separate from the home survey. Tell the solicitor the photograph shows no drip tray, not a measured leak. Do not describe the home survey as an oil-safety certificate. None was produced, and the brick cabinet was only looked into.
What should you ask your surveyor?
- Was a drip tray absent from the view of the filter bowl?
- Did you record missing containment rather than a proved oil leak?
- Was any service of the oil boiler outside this visit?
What are the typical next steps?
- Record that no drip tray was seen under the filter bowl.
- Do not upgrade that photograph into an oil-leak finding.
- Ask an oil-heating engineer to service the boiler separately.
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 the cabinet floor is clean, is containment unnecessary?
No. A clean floor means no stain was seen on the day. It does not put a tray under the filter bowl, and it does not service the boiler. The photograph still lacked leak containment. Missing containment is the note, whether or not oil has marked the brick.
Does a new filter bowl mean the installation was tested?
No. A new bowl shows a component that looks recent. The home survey did not test the oil line or the seals, and it still could not see a drip tray in the brick cabinet. New metal is not an oil service, and the cabinet was only photographed.