Double Story Extensions · Hertfordshire

Add substantial space across two floors.

A double storey extension gives you more than extra room. It gives your home a new bedroom, a new bathroom, or a whole new way of living, while keeping the ground floor open and connected.

Discuss Your Double Story Extension

Beautiful homes. More space. Expertly built.

The Opportunity

One floor isn't always enough.

A growing family doesn't just need more space downstairs. Another bedroom, an extra bathroom, or a place for teenagers to call their own can make all the difference, and a single storey extension can only do so much.

A double storey extension adds valuable, usable space across two floors. It's one of the most effective ways to transform a family home, giving you the room and layout you need without the upheaval of moving.

Before you start looking for somewhere new, let's see what a double storey extension could do for the home you already love.

Property after double storey extension Property before double storey extension Before After

Construction

The construction process

Six clear stages from first conversation to handing over your new space.

01

Initial Consultation

Understand the home, the extra space required and what you want your home to become.

02

Property Assessment

Assess your property to understand what's possible.

03

Design & Planning

Establish designs, structural requirements and necessary approvals.

04

Project Preparation

Prepare for construction and make sure you understand what to expect.

05

Construction

Bring the extension to life while keeping you informed.

06

Finishing & Handover

Complete agreed finishing work and final checks before handing over the new space.

FAQS

Double story extension questions, Answered.

What is a double-storey extension?

A double-storey extension adds new space across two floors of your home — typically combining a larger ground-floor room with a new bedroom or bathroom above.

Double-storey extensions are more likely to require planning permission than single-storey ones, particularly because of height, overlooking and scale. We'll guide you through what applies to your property.

Costs are higher than a single-storey extension because of the additional structure, foundations and first-floor work. We'll provide a clear, itemised quote after assessing your property.

A double-storey extension typically takes longer than a single-storey build due to the additional structural work. We'll give you a realistic timeline before work begins.

Yes. Air conditioning can be incorporated into your extension as part of the overall design and build. This can be particularly useful for larger open-plan spaces, rooms with lots of glazing, or south-facing extensions that can become warmer during the summer.

Planning the system alongside the extension also means pipework, electrics and indoor units can be considered from the outset, helping to achieve a much cleaner and more discreet finish.

Yes. An extension can be a great opportunity to consider upgrading your home's heating system, including the installation of an air source or ground source heat pump.

The government's Boiler Upgrade Scheme currently provides grants towards eligible heat pump installations in England. Depending on the system and your property's circumstances, grants of up to £9,000 are currently available to help towards the cost of installation.

Eligibility criteria apply, so we can help you consider a heat pump as part of the wider extension project and work alongside an appropriately qualified installer where required.

Yes. We match brickwork, roof materials, window styles and proportions so the extension looks like a natural part of your home, not an add-on.

A well-designed two-storey extension is one of the most valuable improvements you can make, particularly when it adds bedrooms and bathrooms — the things buyers and valuers look for most.

That's completely normal. We'll explore what's possible for your home and help you decide — with no pressure.

Imagine

Imagine what life could look like with more room on every floor.

  • A spacious kitchen where the whole family can come together
  • A beautiful new bedroom with space to truly unwind
  • An extra bathroom that makes busy mornings easier
  • Room for growing children to have spaces of their own
  • A home that finally has the space to grow with your family

The space your family needs could already be within reach. You just need to unlock it.

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