Extension Architects in London

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CATO creative loft extensions
CATO creative loft extensions bathroom with skylight
CATO creative loft extensions painted staircase with skylight
CATO creative loft extensions bathroom with skylight
CATO creative loft extensions staircase with skylight
CATO creative loft extensions L-shaped skylight
CATO creative loft extensions bathroom with skylight
CATO creative loft extension bedroom

Why CATO Creative for Your Ground Floor Extension

Whether you’re extending into the garden, opening up the side return, or extending both ways, we design ground floor extensions that maximise light, space and value, making sure that every detail is based on your needs, how you live and what is important to you.

Ground floor extensions can sometimes be achieved using Permitted Development rights, particularly side-return schemes or small extensions where there is no existing side return. For larger, more complex projects, or for homes in conservation areas, full planning permission is required.

At CATO Creative, we have a 100% success rate in securing planning or permitted development approval. We manage the entire process from drawings, applications and coordination with local authorities, ensuring everything is correct first time. This avoids the costly redesigns, refusals or months of delay that often derail projects when planning is mishandled.

Light, Space, and Living

Planning Made Simple

Ground floor extensions offer so much potential. From sociable kitchens and family rooms to quiet studies or dining areas, our ground floor extensions are designed around how you live and what you need. We focus on making your home work for you, designing spaces that balance openness with definition to provide intimacy and coziness as well as space. Using internal glazing and clever layouts, spaces are connected and separated at the same time, promoting togetherness and family life whilst providing the space for quiet or intimacy without isolation. Skylights, windows and doorsets are located and specified to connect the inside and outside, whilst flooding spaces with natural light.

Design by Architects, Built by Specialists

There are many ways to extend your ground floor, but the most successful projects happen when the right people focus on the right stage. Good contractors and specialist extension companies can deliver a fast, hassle-free, quality build. But they are not necessarily focused on pushing boundaries, optimising design or specifying the finer details. That’s where we come in.

We design single-storey and ground floor extensions to maximise light, space and storage, while integrating functional requirements such as ventilation and climate control. This prevents the common mistakes of poorly planned extensions such as dark rooms, awkward layouts, wasted space or expensive retrofits. By working with experienced builders, we make sure our clients get the best of both worlds: brilliant design, high-quality construction and seamless coordination.

A ground floor extension is one of the most effective ways to transform the way you live. By reconfiguring and extending your ground floor, you can create light-filled kitchens, dining rooms and living spaces that can incorporate an unused outside side-return and connect seamlessly to your garden. Unlike lofts or basements, a ground floor extension directly enhances the heart of the home making it the perfect solution for growing families, entertaining, or simply improving how your space works for you. Whether you’re looking for open plan, the opportunity to connect, smaller, intimate and cosy spaces, or a combination of the two, CATO creative is here to help you create a ground floor that is beautiful, practical and as individual as you are.

Your Home, Expanded and Reimagined

Full Design and Project Coordination

Following the RIBA Plan of Works approach, CATO creative can design, specify and coordinate every project stage for extensions so the process is clear and as stress-free as it can be. This includes concept, developed and technical design, producing and submitting all the planning and statutory approvals, specifying all the furniture, fittings and equipment, completing the tender and coordinating everybody during the build. We take care of the details so our clients can focus on life and the enjoyment of their new space.

Why CATO Creative for Your loft conversion, extension, basement or renovation

Whether you’re planning loft conversion, extending into the garden, creating a basement or full renovation, CATO creative are help to help you

With a proven track record across most London Boroughs, we understand the character, planning requirements, and property styles of London homes. We have completed loft conversions, ground floor extensions, basements, full renovations and flat refurbishments projects in Barnes, Bayswater, Chelsea, Chiswick, Clerkenwell, Earls Court, Earlsfield, Fulham, Hampstead Heath, Hampton Court, Hammersmith, High Street Kensington, Islington, Kensington, Kingston-upon-Thames, Knightsbridge, Parsons Green, Pimlico, Putney, Richmond, Soho, South Kensington, Southfields, Teddington, Wandsworth, West Hampstead, Westminster and Wimbledon.

Start Your Basement Transformation

Ready to see what’s possible for your basement extension? As a full service architecture and interior design practice, we help our clients plan, design and deliver their basement projects. Simply send us a message, ping over an email or call us and one of the team will be in touch to arrange a free, no obligation, consultation.

Here’s how we can help:

• Project feasibility
• Pre-application advice
• Planning permission
• Building Regulations & construction drawings
• Architectural & interior design
• Specifying fixtures, fittings & equipment (FF&E)
• Scope of works, tender & contract preparation
• Project delivery