Outbuildings and conservatories
The inspection pit in the garage is full of water. Has the survey found a drain defect, or a pit it could not empty?
Not a proved drain defect: the inspection pit in the garage was full of water, and that is a pit the survey could not empty. The visit records the water it found. It does not, from a pit whose bottom stayed hidden, declare that a drain has failed. Nobody traced a broken pipe from that standing water. A later camera, if one is instructed, is a different visit. This finding is the flooded pit, not an automatic defect in the drainage.
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?
Inspection pits collect what falls into them, including rain, a wash-down or a leak from somewhere else. Until the water is removed, the surveyor cannot see the floor of the pit, the channels or any outlet that might be there. Writing 'drain defect' over that limit invents a conclusion the inspection did not reach. The honest line is that the pit was full and could not be emptied on the day, so the parts under the water were not seen.
Do not ask the home survey to be reread until it becomes a drainage test. If you need the pit empty, that is a separate instruction to someone who can pump it out and then look. Approved Document H is guidance for drainage work. It is not a certificate that this garage pit has failed, and the survey has not issued one. Keep the sentence as a pit not emptied, unless a later look actually finds a defect.
What should you ask your surveyor?
- Was the pit simply full, with the bottom not seen?
- Did you trace any pipe from that water, or only record the pit?
- What would have to be emptied before you could comment on a drain?
What are the typical next steps?
- Treat the note as a pit that was not emptied.
- Do not call it a drain defect without a later look.
- Instruct a separate emptying and inspection if you need the bottom seen.
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 water smells, is the drain condemned?
Not from smell alone. Smell may be worth telling the person who empties the pit. It still does not identify which pipe, if any, is defective.
Does a dry garage floor above the pit clear the drains?
No. A dry floor does not show what is under the water in the pit. The survey still has not inspected the hidden bottom.