I am due to buy a new-build house. The airbricks are very low, and below the soil level.

no they are trying to save money on ground reduction ,top off airbrick should be 150mm above ground level surprised buillding control hasnt picked this one up

Hi Siobhan, This is not acceptable and air bricks are installed to provide vetilation to the substructure. In addition this is a building regulation contravention, try pointing out that you are concerned that this would not be compliant to building regulations demonstrating that you have taken advice on this issue also check the correct number have been installed approx every 2m.

on a new build these airbricks are in the wrong position and to be at least just under dpc level

The air bricks should be minimum 150mm above ground level, they should either reduce the ground level, if possible, or fit telescopic vents. Putting a concrete edging around it, will restrict the air flow and block up.

I would raise this issue with the builders or someone from building control.as far as i am concerned there should be no reason for this arrangement.with the use of telescopic under floor vents (sometimes referred to as periscopes) the outside airbrick could have been raised.i have only seen airbricks below ground level on older properties and this is often due to ground level being raised over the years.like i say,raise the issue and ask why your neighbours is entirely different as it doesnt sound right to me.

I have seen this before where builders have regraded the soil around the house and ended up with the ground level too high. A fair solution is to surround the airbricks with brickwork to ensure ventilation is protected but also to provide a grille over the top to do exactly as you say and prevent leaves and debris from blocking the vents. I would insist on it.

These should defiantly be above ground level