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Single Storey Extension

Single storey extensions delivered from design through to construction and final finishing, adding space and value to your home.

What's Included

  • Adds valuable living space to your property
  • Managed from design and planning through to completion
  • One in-house team, no subcontractors passing the job around
  • Written warranty on completion

Extending a property without the usual coordination headache

A single storey extension is managed end to end, initial drawings and planning, building control, groundworks, structural build, and final finishing, by one in-house team rather than a general contractor bringing in separate subcontractors for each stage.

Because we also handle insulation and heating work, an extension is a natural point to make sure the new space is properly insulated and that the existing heating system can actually cope with the extra floor area, rather than treating it as an afterthought once the walls are up.

  • Adds valuable living space to your property
  • Managed from design and planning through to completion
  • One in-house team, no subcontractors passing the job around
  • Written warranty on completion
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Projects Completed

Solar, heat pump and storage installs delivered across residential and commercial properties.

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Years Combined Experience

An accredited team with decades of hands-on energy and construction work behind it.

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Satisfaction Rate

One team handling the whole job, so it gets done properly and signed off first time.

From Our Project Gallery

More examples of our completed work.

Air Source Heat Pump Conversion — after
Air Source Heat Pump Conversion — before
Before

Air Source Heat Pump Conversion

Boiler-to-ASHP conversion delivering efficient, low-carbon heating for a semi-detached property.

View Project →
External Wall Insulation — after
External Wall Insulation — before
Before

External Wall Insulation

Full external wall insulation upgrade, reducing heat loss and modernising an older property's exterior.

View Project →

Free Quote

Get a Free Single Storey Extensions Quote

Tell us about your single storey extensions project and we'll come back within one business day with a straight answer, a plan and a real quote.

Property type
Are you the homeowner?

Our Process

Four Steps.
Zero Surprises.

From the first call to the final handover, a clear, transparent process designed to deliver solar, home improvement, and renovation work with zero hassle.

STEP 1

Free Survey

Book online or call. A Greentek specialist visits your property to assess your solar, heating, insulation, or renovation needs.

STEP 2

Custom Quote

Get a clear, fixed-price quote with material and brand options, and an honest timeline, no hidden fees.

STEP 3

Expert Installation

Our in-house accredited team carries out the work, solar, heat pump, insulation, or renovation, no subcontractors passing the job around.

STEP 4

Handover & Warranty

We walk you through everything on completion, clean up after ourselves, and hand over your written warranty.

Fully Accredited & Certified.

Gas Safe Register
HIES
Quality Mark
SWIGA