UpKeep Review: Fixed-Price Quotes for London Construction Project

Builders with no fixed price, vague timelines and a habit of going quiet mid-job are the main reasons homeowners dread any work bigger than a repainted wall. Loft conversions and extensions drag on for months longer than promised and disputes over “extra” costs that were never mentioned at quote stage are one of the most common complaints raised with the Citizens Advice Bureau about tradespeople.
UpKeep is a London property maintenance and construction company built around the opposite promise: fixed-price quotes, a named project manager and accreditation you can check before you sign anything. It’s a family-run business, which matters in a trade where a lot of the anxiety comes from not knowing who you’re actually dealing with.
What is UpKeep?
UpKeep covers two overlapping jobs. One side is property maintenance, the day-to-day repairs and upkeep that keep a building running. The other is construction proper: loft conversions, extensions, refurbishments, roof replacements and full commercial fit-outs.
What ties the two sides together is project management. UpKeep handles planning, building regulations and the final handover as one continuous process rather than handing a project between separate firms at each stage.
How UpKeep Works
The structure is end-to-end: initial planning and design through building regulations approval to final handover. For a homeowner, that means one point of contact rather than juggling an architect, a separate contractor and a building control officer who never talk to each other.
This matters more for larger jobs. A loft conversion or extension touches planning permission, structural calculations, building regulations sign-off and then the actual build. Splitting those stages across different suppliers is where a lot of projects lose months to miscommunication. Keeping them under one roof removes a layer of coordination the homeowner would otherwise have to manage themselves.
Commercial fit-outs follow the same logic, just at a different scale. A business handing over an entire space wants a single team accountable from first drawing to the day they get the keys back, not a chain of subcontractors each pointing at the other when something slips.
The Accreditation Picture
Construction is one of those categories where almost anyone can call themselves a builder, so the paperwork behind a company matters more than the pitch. UpKeep holds Gas Safe, NAPIT, TrustMark and FMB (Federation of Master Builders) registration, alongside SafeContractor Approved status and an SSIP (Safety Schemes in Procurement) assessment.
Each of these covers different ground. Gas Safe registration is a legal requirement for anyone working on gas appliances in the UK, enforced by the Health and Safety Executive. TrustMark is a government-endorsed scheme that vets tradespeople against set standards. FMB membership and SSIP assessment both relate to build quality and site safety practice rather than a single trade.
Taken together, this is the kind of spread a company builds up by working across both domestic refurbishment and gas-related installation work rather than sticking to one narrow trade. For a reader who’s been burned by a contractor who turned out to hold none of the relevant certifications, this is the part worth checking before anything else.
Strengths Worth Knowing About
Fixed-price quotes. UpKeep quotes a fixed price upfront with no hidden extras, which removes the single biggest source of dispute in construction work: costs that appear after the job has already started.
Fast emergency response. For maintenance issues that can’t wait, UpKeep offers a 1-3 hour emergency response window, useful for anything from a burst pipe to a structural issue that needs immediate attention rather than a slot next Tuesday.
One contractor, start to finish. The combination of planning, building regulations management and final handover under a single team cuts out the coordination problems that come from hiring separate specialists for each stage of a build.
Accreditation across multiple bodies. Holding Gas Safe, NAPIT, TrustMark, FMB membership, SafeContractor Approved status and SSIP assessment simultaneously is a wider spread of checks than many smaller outfits carry.
Where It Might Not Fit
No construction company is the right call for every job and UpKeep is no exception. A few honest trade-offs are worth weighing before you get in touch.
The range of services, from loft conversions through to commercial fit-outs, suits homeowners and businesses planning a defined project rather than someone after a single quick odd job. If you need a company that lives and breathes one narrow specialism and nothing else, a boutique specialist might feel like a tighter fit for that one task.
Fixed-price quoting protects against mid-project cost surprises, but it also means the scope needs to be agreed clearly upfront. Projects where the brief changes significantly partway through will need a fresh conversation about price rather than assuming the original figure still holds.
And because the core offer is built around full project management, it suits people who want to hand over the coordination work entirely. If you’d rather manage your own architect, your own building control liaison and your own contractor as separate relationships, an end-to-end service isn’t really built for that approach. If you’re weighing up a wider renovation that includes the roof, it’s also worth understanding the standards that apply to commercial roofing work before you lock in a scope.
Who UpKeep Is Best For
This fits London homeowners planning a loft conversion, extension or full refurbishment who want one accountable team rather than several separate contractors. It also fits businesses after a commercial fit-out where downtime and coordination costs add up fast if different trades aren’t talking to each other.
It’s also a reasonable call for anyone who has been stung before by a contractor without proper accreditation or by a quote that quietly grew once work started.
Anyone focused purely on making their property more sustainable alongside a renovation might also find it useful to look at broader ways to make a property more eco-friendly while planning the scope of works with a contractor.
The Verdict
UpKeep’s case rests on two things that actually matter to anyone who has sat through a bad building project: a fixed price agreed before work starts and a single team responsible from planning through to handover. Backed by Gas Safe, NAPIT, TrustMark and FMB accreditation, plus SafeContractor Approved and SSIP assessed status.
For a London-based loft conversion, extension, refurbishment or commercial fit-out where you want one point of contact and a price that won’t move, UpKeep is worth getting a quote from.









