Prime Build Works Limited covers ten building services across South London and North Kent, from structural work like extensions, loft conversions and electrical installation through to the finishing trades — carpentry, kitchens, wardrobes, doors and flooring. Most projects draw on several of them at once, which is why we keep the trades in-house rather than subcontracting each stage to a different firm.
Whether you need one service or a whole property handled end to end, the same team does the work on one programme, with one point of contact and one written quotation.
Projects that change the shape or fabric of the building. These need design, approvals and building control sign-off as well as construction.
The work that decides how a finished room actually looks and functions. We take these on as standalone jobs as well as part of larger projects.

Most building projects need several trades in a fixed order. An extension needs groundworkers, bricklayers, roofers, electricians, plumbers, plasterers, carpenters and floor fitters, roughly in that sequence, and the electrical first fix has to happen before the plasterer arrives or the walls come off again. When each one is booked separately, the programme is only as reliable as the least available of them — and the gaps between trades are where weeks disappear.
Because our trades are directly employed, we control the sequence rather than negotiating it. That is the reason a project with us has one programme rather than seven, one point of contact rather than seven, and one company answerable for the result at the end of it.
It also means the finishing stages, which is where most projects overrun, run to the same programme as the structural work at the start.
Site visit. We come and look at the property before quoting anything — no figures over the phone.
Written quotation, broken down by stage rather than given as a single lump sum.
Programme with realistic dates, including any approvals that have to happen first.
The work, with one point of contact throughout and agreed access and working hours.
Handover, with a walkthrough, any certificates, and the snagging dealt with before we leave.
Balham, Clapham, Brixton, Streatham, Tooting, Wimbledon, Mitcham, Worcester Park
Gravesend, Northfleet, Dartford, Meopham, Higham, Shorne, Cobham, Ebbsfleet
Based in Balham SW12 and working across South London and North Kent.
Not sure if we cover you?
Call 07472 137237 and ask.
Tell us what you are trying to achieve rather than which trade you think it needs. We will come and look, tell you what the work actually involves, and put it in writing.
Both. Some of our work is a full extension or whole-house refurbishment, and some is hanging a door or fitting flooring in one room. Small jobs are often easier for us to schedule than large ones, so it is worth asking even if you think the job is too minor to bother a building contractor with.
Yes, and it is what we are set up for. Most of our projects use several of the ten services at once — an extension typically involves structural work, roofing, electrics, carpentry, kitchen fitting and flooring. Because those trades are directly employed rather than subcontracted, they run on one programme under one point of contact.
Yes. As well as domestic work we take on commercial refurbishment, office and retail fit-outs, HMO conversions and void property turnarounds for landlords, letting agents and property managers. Our property refurbishment page covers that side of the business in more detail.
Call 07472 137237, use the contact form, or message us on WhatsApp. We will arrange a site visit, because we do not quote for building work over the phone — a figure given without seeing the property is a guess, and it is usually the low guess that costs you more later. After the visit you get a written quotation broken down by stage.
We are based in Balham SW12 and work throughout South London, including Clapham, Brixton, Streatham, Tooting, Wimbledon, Mitcham and Worcester Park. We also take on extension, loft and refurbishment work across North Kent, including Gravesend, Dartford and Northfleet. If you are not sure whether we reach you, call and ask.