Porch Extensions

Porch Extension Builders in Cambridgeshire & Hertfordshire.

TrustMark Approved

Creating welcoming entrances that make the perfect first impression.

At CB Building Services, based in Royston, we specialise in creating beautifully designed porch extensions that enhance your home’s character and provide practical entrance solutions. Serving families across Cambridgeshire and Hertfordshire, we combine years of expertise with innovative design to deliver stunning porches that are both functional and beautiful, whether you prefer a sleek contemporary style or a traditional period design.

Porch Extension - CB Building Services in Royston, Cambridgeshire & Hertfordshire
Porch and Side Extension - CB Building Service
Porch Extension - CB Building Service
Porch Extension - CB Building Services in Royston, Cambridgeshire & Hertfordshire


Why choose us

Trusted expert builders

Members of the Federation of Master Builders
Our accreditations include Gas Safe registration and NICEIC certification.
TrustMark Approved
Government-endorsed contractor, we’re committed to quality, reliability, and consumer protection.
No outsourcing
The same team that quotes your project will see it through to completion.
From build to finish
From constructing your extension to fitting units, plumbing and electrics.



What we do

From modest entrance canopies to impressive statement porches.

We specialise in every type of porch extension, from compact entrance canopies that provide essential weather protection to substantial enclosed porches that create additional storage, living space or even a space for a downstairs toilet. Whether you need a simple covered entrance to complement your home’s existing style or an impressive glazed porch that floods your hallway with natural light, we bring the same attention to detail and craftsmanship to every project.

  • Traditional enclosed porches
  • Contemporary glazed porches
  • Open canopy porches
  • Utility porches
  • Separate downstairs toilet
  • Period-style porches
  • Secure entrance lobbies
Kitchen Extension - CB Building Services in Royston, Cambridgeshire & Hertfordshire

“CB Building Services completed our extension to a high standard as required, on timescale and on budget. Thoroughly recommended. Thanks Charlie and the team.”

Kevin Green

How we work

From design to door installation.

From planning through to final installation, we manage every aspect of your porch extension project. This includes building the porch structure, installing doors and windows, fitting electrics for lighting and security, and ensuring perfect weatherproofing. Our experienced team coordinates all trades, maintains clear communication throughout and ensures minimal disruption to your daily access to your home.

  • Design consultation
  • Planning permission support
  • Foundation and structural work
  • Roofing and weatherproofing
  • Electrics and plumbing
  • Door and window installation
Double Storey Extension - CB Building Services in Royston, Cambridgeshire & Hertfordshire
Approved builders

Trusted porch extension specialists

Your porch extension creates the first impression of your home, which is why we maintain the highest professional standards throughout every project. We are TrustMark approved contractors and we hold all relevant certifications for porch construction, including electrical installations for lighting and security systems, structural work for foundations and roofing, and weatherproofing to protect your entrance from the elements.

Ready to enhance your home's entrance?

Contact CB Building Services today for a consultation about your porch extension project. Let’s create the perfect welcoming entrance that adds character and functionality to your home.