South East London's Trusted Home Extension Builders

If you're running out of room but love where you live, a house extension is the ideal solution, and in South East London, it’s more popular than ever. Whether you're growing your family, need a dedicated home office, or simply want more breathing room, Refresh Renovations South East London delivers bespoke extensions that maximise your space while complementing the character of your home.

We manage your entire extension project from start to finish, offering end-to-end service that covers planning, design, permissions, construction and final handover. Our goal is simple: to make your extension as smooth, hassle-free and efficient as possible.

Trusted Home Extensions Company in South East London

Why Choose Refresh Renovations for your home extensions in South East London?

A Fully Managed 5-Step Process

At Refresh, we’ve streamlined the renovation experience. You’ll have a single point of contact and a dedicated Project Manager overseeing every aspect of your build - from design and planning permissions, through to construction and finishing touches. You won't need to chase contractors or coordinate timelines - we handle it all for you.

Tailored Designs, Built Around You

Your lifestyle, your needs, your style. We take time to understand what you want to achieve with your extension - whether it’s a rear extension, side return, wraparound, or double-storey build. Our in-house designers create a concept that integrates beautifully with your existing property and adds lasting value.

Navigating Planning with Confidence

South East London councils can have varying planning and building consent requirements, but we know the local systems inside out. Our team prepares and submits all documentation, liaises with authorities, and ensures that your project meets all regulatory standards.

Trusted Local Builders & Quality Craftsmanship

We only work with experienced, vetted tradespeople who take pride in their craft. From brickwork to internal finishes, we ensure every part of your extension is completed to the highest standard - with quality materials and attention to detail at every stage.

Top Rated Home Extension Services in South East London

What house extension services do you offer in South East London?

• Bespoke house extension designs
• House extension planning
• House extension design and build
• House extension project management
• House additions
• Building an addition on your home
• First storey home extensions
• Second storey home extensions
• Basement and underground extensions
• House extension building and construction
• House extension budget estimates
• House extension council consent help
• Partial house extensions
• Full house extensions
• Bedroom additions
• Kitchen additions
• Bathroom additions
• Ensuite additions
• Living room additions
• Home office additions
• Garage additions
• Same-level house extensions

‍Popular House Extension Types in South East London

• Rear Extensions: Extend into the garden for a larger kitchen, open-plan living, or dining space. Ideal for period properties.
  
• Side Return Extensions: Maximise the often unused space along the side of your house to create a more spacious layout.
  
• Wraparound Extensions: Combine rear and side extensions for maximum space gain and complete ground floor transformation.
  
• Double Storey Extensions: Add more bedrooms, bathrooms or a home office with upper-level builds.
  
• Loft Extensions & Conversions: Increase usable space without altering your home’s footprint.
  

Will a house extension add value to my home?

Your home should mirror your lifestyle changes over time. In many cases, these changes take the form of house extensions to add more space and value to your home in South East London. Read on to discover tips and inspiration for your new home extension.

What to consider when extending your home

The house extension process reaps many rewards, including expanding your living space and increasing your home’s value. But before you start planning out your house extension design, it’s important to consider the following:

Current layout

Do you have room on your property for an extension? If so, what will be the best place to extend? This could be a bedroom, kitchen, living room, or even garage extension. If you’re short on square metres, you might want to consider building vertically.

Budget

House extensions vary in price, depending on the size and scope of your project. It’s important to outline a budget first, and then explore the design options to compliment your home and your wallet. Cost-effective extensions are possible with the right amount of planning in place!

Design

Think about the design and style that would best complement the rest of your home. There are also opportunities to blend contemporary and traditional design in a tasteful manner.

Tips for a cost-effective home extension renovation

With proper planning and budget allocation, it is possible to extend your home without breaking the bank! Discover our cost saving tips:

Start with a defined budget

Your Renovation Consultant will ask for your budget parameters from the outset. This way, they can help you best allocate your funds towards meaningful, long-lasting changes.

Consider materials

The materials you choose have a massive effect on your project’s bottom line. Today, there are many budget-friendly options to replace what would be an expensive material. Some examples of affordable materials include reclaimed timber, stone cladding, fresh concrete, and industrial steel.

Consider your build site

Groundwork is a hidden yet substantial cost for your project. Choose to extend in an area that’s free from underground plumbing or electrical wiring.  

On top of this, your Renovation Consultant will be able to inform you of other ways to save on your home additions and other places in South East London.

What Does a House Extension Cost in South East London?

Costs vary depending on the size, complexity and finishes of your extension. In South East London, a single - storey extension typically starts from £60,000–£90,000*, while double - storey or more complex builds may exceed £120,000*.

We provide fixed-cost proposals, so there are no surprises. Our team will work with you to align your design, scope and budget - prioritising both function and long-term value.

*Costs are rough estimates and are subject to change. For a fixed-quote accurate to your specific project, please consult your local Refresh® Renovation Consultant.

Do you offer house extension building / designing services across all areas in South East London?

Yes, Refresh Renovations® provides renovation, remodeling, house extension building, and designing services across all areas of South East London. Whether you’re planning a kitchen extension, bathroom extension, room extension, glass room extension, sunlight room extension, single storey extension, or mutiple storey extensions our expert team can help bring your vision to life.

We proudly service key areas including:

• Bexleyheath & Sidcup
• Woolwich & Abbeywood
• Forest Hill & Blackheath
• Southwark & Peckham
• Greenwich & Lewisham
• Erith & Belvedere
• Surrey Quays & Burgess Park
• Welling & Bexley

No matter where you are in South East London, our team ensures your renovation project is delivered with professional care, high-quality craftsmanship, and a stress-free process from start to finish.

Ready to Extend Your Home in South East London?

Whether you're in Greenwich, Lewisham, Dulwich, Bromley, or anywhere in between, our local Refresh team is here to help you make the most of your space. We make the process simple and hassle-free, offering expert advice and project management from the very first consultation.

Let’s explore what’s possible. Contact us today to arrange a free consultation and start planning your dream extension.

Browse through some of our recent projects.

Go through the Testimonials to see what some of the customers have to say about our work.