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Period London mansion block under refurbishment with full scaffolding

Instant Maintenance & Building Services

Building, refurbishment and compliance contractor for the property sector.

Multi-trade contracting for estate agents, housing providers, block managers and commercial property owners across Greater London and the South East.

5.0 on Google from 230 reviews · £10m insured · Gas Safe, NICEIC and BAFE registered works

Tell us the postcode and we'll come and look. Site surveys and quotes are free.

Who we are

Instant Maintenance & Building Services is a multi-trade building contractor based in London, delivering refurbishment, compliance and planned works across Greater London and the South East.

A core team of engineers and estimators manages every job end to end, working alongside a network of vetted specialist subcontractors for specialist trades, backed by a bookings desk and a dedicated account manager on every job. Our engineers bring over twenty years of hands-on trade experience.

More about the team

What we do

Multi-trade contracting from one team.

Not sure which service you need? Send us a photo and we'll tell you.

Send us a photo

How we work

Four steps from first call to handover.

  1. 01

    Tell us what's happened

    One call or one email to the bookings desk, whether it's a single repair or a full programme.

  2. 02

    Free site survey

    An engineer or estimator attends, takes photographs and confirms the scope with you.

  3. 03

    Fixed quote and programme

    A written quote with dates, access requirements and the trades involved. No cost to get there.

  4. 04

    One account manager

    A named contact runs the job through to handover, with certification and reporting passed to you.

Why IMS

The same team, start to finish.

Directly employed core team

Engineers and estimators on our own books run every job, so the standard and the reporting stay consistent.

Scheme registered on specialist works

Fire safety, electrical and gas work is delivered under Gas Safe, NICEIC or NAPIT, BAFE and third party certification, with the paperwork issued to you.

Fully insured, one point of contact

Full public and employer's liability insurance as a company, and a named account manager on every instruction.

Who we work with

Built around managed portfolios.

  • Estate agents
  • Housing associations
  • Block managers
  • Property managers
  • Commercial property owners
  • Surveyors and architects

Trusted by teams at

  • Akelius
  • Winkworth
  • Garton Jones
  • Metropolitan and Crown
  • Martin & Co

5.0 on Google from 230 reviews

Engineers with 20+ years hands-on trade experience

Core in-house team backed by vetted specialist subcontractors

Recent work

See the standard on completed projects.

All projects
I have now worked alongside IMS for close to a year now, and it has been a constant pleasure dealing with them from start to finish. They are always responsive, friendly and cooperative.
Mohammed AboobakarProperty Manager
We've been consistently impressed by the outstanding service provided by Instant Maintenance. Their team is reliable, responsive and highly skilled across a wide range of works, from general repairs and refurbishments to more specialised maintenance tasks.
Craig Reiche, MARLAProperty Management Team Leader
Asa and his team did a brilliant job in my apartment with electrical, painting and decorating works on schedule and on budget. There were excellent communications from Sina and I will definitely use them again. Highly recommended.
Roger ChapmanMulti-trade worksGoogle review · November 2025
Susanna is an absolute gem. She is incredibly efficient at getting everything booked and sorted quickly, and always keeps us in the loop. The maintenance teams are equally fantastic, the work is consistently completed to a high standard.
Gabi BenewiatManaged portfolioGoogle review · May 2025
Instant Maintenance carried out a full refurb on my property and it was a great experience from start to finish. Professional, tidy and the finish is excellent.
HE BY JUNIORFull refurbishmentGoogle review · June 2023
Leon was quick and efficient in repairing our office door, and left a good impression on our entire office.
Eden HarperCommercial premisesGoogle review · July 2023
See what our customers think of us

All 230 reviews, unedited, on our Google listing.

Areas we cover

Based in London, we deliver across Greater London and the South East, from single reactive repairs to full refurbishment and compliance programmes.

As our capability grows, so does our reach. If your property sits outside these areas, get in touch and we'll discuss coverage.

Tenders & partnerships

Working on a larger project?

We welcome tender opportunities and work alongside surveyors and architects on design-led projects, with an in-house team experienced in preparing tender submissions to a high standard.

Insurance and accreditation

£10m public liability
Full company cover for works across occupied residential and commercial property.
£10m employer's liability
Directly employed engineers covered, with every specialist we appoint evidenced at onboarding.
Registered with the governing bodies
Gas Safe, NICEIC and NAPIT, BAFE and third party certificated fire stopping schemes stand behind the work we deliver.
Certification on completion
Every job closes with photographs and scheme certification you can hand straight to the landlord.

Insurance certificates and scheme registration details are issued on request and supplied with every tender submission.

Ask us to take a look.

Whatever's come up across your portfolio, a single repair or a full refurbishment programme, we'd welcome the chance to quote. Site surveys and quotes are free, so there's no cost or commitment in simply asking us to take a look.

Call usGet a quote