VHL Mechanical was founded in 1992 by David Kelly with a single purpose — to raise the standard of care, compliance and customer service in the heating and property maintenance industry. What began as a family-run heating business in London grew into a trusted, multi-trade contractor delivering services across the private and social housing sectors — with over 40,000 annual visits, Gas Safe registered engineers and NICEIC-accredited electricians working across London and beyond.
DK Lettings was created to bring that same standard of engineering and compliance directly to landlords and letting agents — as a dedicated service built around the specific needs of the private rented sector. The name carries the initials of our founder. The values are the same ones that have guided VHL Mechanical for over thirty years.
Where other landlord compliance services use third-party engineer networks or marketplace models, DK Lettings operates differently. Every engineer who attends your property is part of our team. Every certificate is backed by our accreditations. Every job is documented and accessible in your client portal. That is not how every contractor works — but it is how we have always worked.
DK Lettings operates as a sister company to VHL Mechanical under the VHL Group — alongside VHL Renewables, which delivers sustainable heating and energy solutions. Being part of an established group means DK Lettings clients benefit from infrastructure, accreditations and engineering standards that take decades to build.
London's established heating, electrical and compliance contractor. Serving commercial clients, housing associations and local authorities since 1992. Gas Safe registered, NICEIC accredited and framework-approved across the public and private sectors.
Delivering sustainable heating and energy solutions — heat pumps, solar and low-carbon technologies — for a greener built environment.
Landlord compliance and property services for the private rented sector. Gas safety certificates, electrical inspections, boiler servicing, compliance packages and full property maintenance — under one roof, with one team, in one portal.
We work in people's homes. We treat every property, every tenant and every landlord with the same care we would want in our own homes. Every engineer, every visit, every time.
We deliver on our promises. Confirmed appointments kept. Certificates issued on the day. Remedial works carried out by our own team. No subcontractors, no excuses, no gaps.
We use technology to make compliance easier — from digital job tracking and same-day certification to a client portal that gives landlords instant access to every document across their entire portfolio.
Landlords are running a business. Letting agents are managing relationships. We understand the pressure that comes with compliance responsibility and we work around your schedule, your tenants and your needs — not ours.
Every service DK Lettings delivers is backed by the accreditations landlords and letting agents need to trust a contractor. Our engineers arrive registered, certified and accountable.
Gas Safe registration is the legal requirement for any engineer carrying out gas work in the UK. All DK Lettings gas engineers are Gas Safe registered — verifiable on the Gas Safe register before they attend your property.
NICEIC accreditation is one of the most recognised marks of quality for electrical contractors in the UK. All DK Lettings electricians are NICEIC accredited, ensuring every EICR meets current IET Wiring Regulations.
Through VHL Mechanical, the DK Lettings team is part of a group that is framework-approved across the public and private sectors. That governance standard applies to every job — including a single CP12 for a one-bedroom flat.
Our engineers are positioned across the city for fast mobilisation — whether you need a single CP12 in Zone 2 or a compliance plan across a portfolio spread across multiple boroughs.
A CP12 or EICR is not just a piece of paper. It is the document that stands between you and a fine, between you and a prosecution, between you and the loss of your right to serve a Section 21 notice. We understand that — and it shapes how we approach every job.
Our engineers do not rush inspections. Our electricians do not cut corners on condition reports. When something fails, we tell you clearly, explain what it means in plain English, and carry out the remedial work ourselves — so you are never left with a failed inspection and no one to fix it.
Every job is documented with the same rigour regardless of size. A single annual gas safety check on a one-bedroom flat gets the same standard of engineer, the same same-day certificate and the same portal documentation as a portfolio compliance plan covering twenty properties.
That is the VHL Mechanical standard — and it is the DK Lettings standard.
Not a marketplace Every engineer who attends your property is employed by and accountable to us. No third-party networks, no unknown contractors, no inconsistency.
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DK Lettings is part of the VHL Group — a business built by engineers since 1992. The accreditations, the processes and the standards are not new. They have been earned over decades.
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Gas safety, electrical, boiler servicing, plumbing, central heating, EV charging and emergency call-out — all from one contractor. No coordination between companies, no gaps in accountability.
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Issued on the day of inspection and uploaded immediately to your client portal. No waiting, no chasing.
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Every certificate, every report, every job history — accessible any time under a single login. One account for every property in your portfolio.
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Portfolio pricing, consolidated invoicing and multi-property management for letting agents managing multiple landlords and properties.
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We contact your tenant, confirm the appointment and provide a 30-minute notice call on the day. You don't have to manage access.
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We track your compliance dates and notify you before certificates lapse — so you are never caught out.
Learn moreStrategically placed. Rapidly deployed. Always near.
“Exactly what a landlord needs — one team, all the certificates, no drama”
“Booked a CP12 and EICR together. One visit, done. Couldn't be easier”
“Finally a contractor that understands compliance isn't optional”
“Tech arrived in 25 minutes at 9pm and stopped the leak. Fair pricing.”
Everything landlords and letting agents ask us most often. If you have a question not answered here, contact us directly.
DK Lettings is a sister company to VHL Mechanical, operating under the VHL Group. We share engineering standards, accreditations and the values that have guided VHL Mechanical since 1992 — but DK Lettings is a dedicated service built specifically for landlords and letting agents in the private rented sector.
Yes. All DK Lettings gas engineers are Gas Safe registered. Gas Safe registration is a legal requirement for any engineer carrying out gas work in the UK and is the only recognised qualification for issuing a CP12 landlord gas safety certificate. You can verify any engineer's registration on the Gas Safe register.
Yes. All DK Lettings electricians are NICEIC accredited — one of the most widely recognised marks of quality for electrical contractors in the UK. NICEIC accreditation ensures all electrical work and EICR reports meet the current IET Wiring Regulations.
No. Every engineer who attends your property is part of the DK Lettings team. We do not use third-party engineer networks or marketplace models. Every job is carried out by our own Gas Safe registered or NICEIC-accredited engineers — consistently, accountably, every time.
DK Lettings is a new specialist service within the VHL Group — but the engineering heritage behind it goes back to 1992. The accreditations, the processes and the standards we operate to have been built and refined over more than thirty years by VHL Mechanical.
DK Lettings serves landlords and letting agents across London and the surrounding areas including Middlesex, Surrey, Essex, Hertfordshire and Kent. Contact us to confirm coverage for your specific postcode.
Backed by thirty years of VHL Mechanical engineering. Built specifically for landlords. Get your first quote today.