Fast response
Emergencies answered around the clock, with an average on-site time of under two hours across most of London.
24/7 emergency callouts · avg response under 2 hours
London property, looked after properly.
Plumbing, electrics, carpentry, decorating and reactive repairs for landlords, agents and homeowners. Fully insured, qualified trades, and we turn up when we say we will.
- 4.9★
- 280+ reviews
- £5m
- Public liability
- 12yr
- In London
- <2hr
- Emergency avg
Get a fast quote
No call-out chargeTell us what you need. We reply within the hour, 8am–8pm.
Request received
Thanks — we'll call you back within the hour during opening times. Need us now? Call 020 3582 0417.
- Gas Safe Registered
- NICEIC Approved
- £5m Public Liability
- DBS Checked
- 12-Month Guarantee
- 4.9★ Google Rated
01Why Keystone
The reliable trade partner London property actually needs.
No cowboys, no no-shows, no surprise bills. Just qualified tradespeople who communicate clearly and finish the job to a clean line.
Fully insured
£5m public liability cover and a 12-month workmanship guarantee on everything we do. Certificates on request.
Qualified trades
Gas Safe, NICEIC and City & Guilds qualified, DBS-checked engineers. The right person for the job, every time.
Clear communication
One point of contact, photo updates as we go, and a clear price before we start. No chasing required.
02What we do
One call covers the lot.
From a dripping tap to a full rewire, planned upkeep to a 2am emergency, it's all under one trusted roof.
Property Maintenance
Planned upkeep and one-off fixes that keep your property sound, safe and let-ready.
Handyman Services
Shelves, hinges, leaks and odd jobs sorted in a single visit by one reliable tradesperson.
Plumbing & Heating
Leaks, taps, radiators, boilers and pressure problems. Gas Safe registered engineers.
Electrical Works
Sockets, lighting, fault-finding, consumer units and full rewires. NICEIC approved, Part P certified.
Carpentry & Joinery
Doors, skirting, shelving, flooring and bespoke fitted woodwork, finished to a clean line.
Painting & Decorating
Interior and exterior decorating with proper prep, tidy edges and hard-wearing finishes.
Reactive Repairs
Fast turnaround on tenant-reported faults and snagging, with photo updates throughout.
Landlord Maintenance
Compliance, voids, check-in repairs and ongoing upkeep across single lets and portfolios.
Property Management Support
A dependable trade partner for managing agents: scheduled works, reporting and clear invoicing.
24/7
Emergency Callouts
Burst pipes, electrical faults, lockouts and leaks, day or night. Average response under two hours across London.
03Recent projects
Work we're happy to put our name to.
Real jobs across London boroughs. Drag the slider to see a recent bathroom go from tired to transformed.
After
Before
Bathroom refit · Islington N1
Drag the handle to compare before & after
Rewire & consumer unit
Hackney E8
Boiler replacement
Wandsworth SW18
Fitted kitchen carpentry
Clapham SW4
Communal hallway decorating
Camden NW1
Emergency leak repair
Greenwich SE10
Door hanging & joinery
Southwark SE1
04Customer reviews
Londoners who'd recommend us.
4.9
280+ reviews · Google & Checkatrade
★★★★★
"Tenant's boiler failed on a Friday night and Keystone had an engineer out within the hour. Honest pricing, kept me updated throughout. My go-to from now on."
★★★★★
"Re-tiled and re-plumbed our bathroom to a really high standard. Tidy, punctual and the finish is spot on. Couldn't fault them."
★★★★★
"Lovely job decorating the hallway and fixing a dozen little snags we'd ignored for years. One visit and it was all done."
★★★★★
"We use Keystone across our managed portfolio. Reliable, well-priced and the reporting makes my job easy. Invoicing is always clear."
★★★★★
"A leak under the sink at 11pm, sorted before midnight. Calm, professional and reasonably priced for an emergency."
★★★★★
"Replaced our consumer unit and sorted some dodgy sockets. Certificated, safe and explained everything clearly."
05Who we work with
Trusted across London property.
Homeowners
A trusted pair of hands for repairs, improvements and the jobs on your list.
Landlords
Keep tenants happy and properties compliant, without chasing trades.
Estate Agents
Reliable pre-let and pre-sale works that move completions forward.
Property Managers
Scheduled and reactive works across portfolios, with clear reporting.
Commercial Clients
Offices, shops and communal spaces maintained with minimal disruption.
06FAQ
Good questions, straight answers.
Still unsure? Call us on 020 3582 0417 and we'll talk it through.
Are you fully insured and qualified?
Yes. We carry £5m public liability insurance and our trades are Gas Safe registered, NICEIC approved and City & Guilds qualified. We're happy to share certificates on request.
Do you charge for quotes or call-outs?
Quotes are free and there's no call-out charge for booked work. For emergencies we'll always confirm any charges with you before we start.
How quickly can you respond?
For emergencies our average response is under two hours across most of London. Non-urgent work is usually booked within 24–48 hours.
Which areas of London do you cover?
All of Greater London — North, South, East, West and Central — including Islington, Hackney, Camden, Wandsworth, Clapham, Greenwich and the surrounding boroughs.
Do you work with landlords and managing agents?
Absolutely. We support letting agents, property managers and landlords with scheduled maintenance, void works, compliance and consolidated invoicing.
How do I pay, and is the work guaranteed?
We accept card and bank transfer, and all of our workmanship is covered by a 12-month guarantee.
07Get in touch
Book a job or get a quote today.
Call, WhatsApp or drop us a message. For emergencies, the phone is always quickest.
Call us020 3582 0417
WhatsApp07700 900482
Emailhello@keystonemaintenance.co.uk
HoursMon–Sat 8–8 · Emergency 24/7
Arch 12, Mentmore Terrace, London E8 3PN
Covering all Greater London boroughs
Send an enquiry
We'll get back to you within the hour, 8am–8pm.