Home & Property
Basement Conversions leads,
matched to you.
Yes, AceLeads supplies basement conversion leads from UK homeowners and property owners, concentrated in London and the South East where most of this work happens. Every lead states which job it actually is: a tank and convert inside an existing cellar, a floor lowering, or a full dig-out with underpinning. Each one carries the property type and age, existing head height, the intended use of the space and the postcode, so basement specialists and structural contractors can size the job before they quote. Where the owner has already appointed a structural engineer or served party wall notices, the lead says so, because those are the strongest signals that a project is funded and moving.
Basement Conversions
Matched by conversion type, underpinning expected, property type and more.
Verified leadsWhy these leads
Ready-to-buy basement conversions enquiries
Basement conversions cover two very different jobs that share a name. One is a tank and convert inside an existing cellar: waterproofing designed to BS 8102, usually a cavity drain membrane with a sump and pump, then floor build-up, lighting and habitable finishes. The other is an excavation, lowering the slab or digging out under the footprint, which brings in underpinning in sequenced bays, temporary works, structural calculations and a party wall award with every adjoining owner before a spade moves. The gap between the two is an order of magnitude in value, so the first job of a good lead is to say which one it is. London and the South East dominate demand, where a floor gained under the house often beats the cost of moving, and where boroughs frequently ask for a basement impact assessment covering hydrology, ground movement and structural stability. Our leads capture head height, property age and type, whether a structural engineer or party wall surveyor is already appointed, and how far planning has got, so specialists quote on scope rather than on guesswork.
A typical Basement Conversions lead includes
- Contact details
- Conversion type (tank and convert / floor lowering / full dig-out)
- Underpinning expected?
- Existing head height
- Approx. floor area of the space
- Property type, age and whether terraced, semi-detached or detached
- Intended use (living space, gym, cinema, annexe, storage)
- Structural engineer or party wall surveyor appointed?
- Party wall notices served?
- Planning or basement impact assessment stage
- Timescale
- Postcode area
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Who buys these
Built for basement conversions businesses like yours
FAQ
Basement Conversions leads, explained.
Can I filter out simple cellar conversions and only see full dig-outs?
Yes. Conversion type is captured on every lead, so you can take only excavations and underpinning work, only tank-and-convert jobs inside an existing cellar, or both. It is the single most useful filter in this vertical, because the two jobs sit in completely different price brackets.
How do you tell a tank and convert from an excavation before I see the lead?
We ask the owner what is already under the house. Existing head height, whether the floor needs lowering, whether the space extends beyond the current footprint and what they want to use it for tell us which job it is, and all four reach you with the lead so you can check our read against your own.
Do the leads show party wall and structural progress?
Where the owner has told us, yes. Leads flag whether a structural engineer or party wall surveyor is appointed, whether notices have been served on adjoining owners, and how far planning or a basement impact assessment has got. Those are buying signals, not paperwork: an owner who is paying a surveyor is a long way past browsing.
Can I restrict leads to London and the South East?
Yes. Set the postcode areas you will travel to and you only see enquiries inside them. Most demand in this vertical sits in London and the South East, so the tighter your area, the better your conversion tends to be.
Are these homeowners or property professionals?
Mostly homeowners extending downwards rather than moving, with a smaller share of landlords and small developers adding habitable space to a property. The lead names the intended use of the space, which usually tells you which one you are speaking to.
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