Built on trust. Driven by quality.

Professional electrical, gas, heating, plumbing and multi-trade building services across London, Surrey, Berkshire & Hampshire.


Fully certified • Fully insured • Trusted by landlords, estate agents & homeowners

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Construction worker in orange safety gear and helmet working on electrical control panel at a job site.
Yellow triangular gas safety register logo with black background and text.
Logo for NAPIT with a large red checkmark and blue horizontal lines, and the text 'NAPIT' below in blue, with 'Approved Electrician' in a red box underneath.
City & Guilds NVQ logo with red lion emblem and dotted line

Our Services

We provide fully certified electrical, gas, heating, plumbing and multi-trade building services across London, Surrey, Berkshire & Hampshire.

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  • • EICR Testing
    • Fuse Board Upgrades
    • Lighting & Socket Installation
    • Fault Finding & Repairs
    • Smoke, Heat & CO Alarm Systems
    • Rewires & Consumer Unit Replacements

  • • Boiler Installation, Repair & Servicing
    • Gas Safety Certificates (CP12)
    • Radiator & Towel Rail Installation
    • Warm Air Heating (Johnson & Starley Specialists)
    • Heating Repairs & System Diagnostics

  • • Leak repairs
    • Tap, toilet & basin installations
    • Cylinder replacements
    • Blocked drains
    • Pipework repair

  • • Painting & decorating
    • Flooring (LVT, laminate, tiling)
    • Plastering & drywall
    • Carpentry & repairs
    • Kitchen & bathroom works
    • End-of-tenancy refurbishments

  • • Compliance certificates (EICR, Gas, Smoke alarms)
    • Emergency call-outs
    • Ongoing maintenance
    • Digital reporting & invoices

  • • Electrical repairs & installations
    • Boiler servicing & heating repairs
    • Plumbing issues & leaks
    • Appliance installation & fault finding
    • AC installation & servicing
    • Smoke/heat/CO alarm installation
    • Bathroom & kitchen repairs
    • General home maintenance

  • • Power cuts & tripping circuits
    • No heating / no hot water
    • Water leaks
    • Unsafe electrics
    • Gas issues (boiler faults, leaks)

Why Choose Cortech Building Services

✓ NAPIT Registered


✓ Gas Safe Registered


✓ Fully Insured Engineers


✓ Clear Pricing & Written Estimates


✓ Fast Response Times


✓ 5-Star Customer Service


✓ Flexible Payments: Card, Klarna, Clearpay & GoCardless Instalments

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A man standing on a ladder working on an electrical fixture on the ceiling.

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  • “Reliable, fast and professional - my go-to contractor for rental properties.”

    Estate Agent, London

  • “Cortech solved a major electrical issue within hours. Highly recommend.”

    Homeowner, Surrey

  • “Clear pricing, great communication and full certification every time.”

    Landlord, Reading

Contact Us

For all enquiries, please get in touch using the form below, we’re here to help.