House Extensions in Putney & Barnes


Planning a house extension? If you are looking for a house extension in Putney & Barnes, you might be finding choosing a supplier a challenge. The good news is Red Box is a Which? Trusted Trader and Trustmark registered business that specialises in helping homeowners like you in the area.

Whatever future you have imagined for your home, finding the right local house extension specialists in Putney & Barnes is vital. They can work with you to bring your plans into reality and provide more space for your family.

As expert house extension builders, Red Box have helped Putney & Barnes residents, like you, with similar projects for many years. Our professionals can help your project every step of the way.

Other Services in Putney & Barnes

Putney and Barnes Kitchen

Kitchen Renovation

Putney and Barnes Bathroom Thumbnail

Bathroom Renovations

Loft Conversion Putney Barnes

Loft Conversions

Putney & Barnes Loft Conversion


Putney & Barnes Painters and Decorators

Painters and Decorators

Kitchen Extensions In Putney & Barnes

Kitchen extensions in Putney & Barnes are often the most ambitious projects we undertake. This has given Red Box plenty of experience in period features including plumbing in older buildings, tight space constraints and relevant planning approval requirements.

As kitchen extension builders working with highly skilled teams of tradespeople, we make sure everything goes well whatever challenges we face.

If you have a spark of an idea or a specific kitchen extension design plan already in place for your home, contact us to arrange a site visit. This will let us provide an accurate quote so you can start to make your dreams of new space ideas a reality.

Once the kitchen extension plans are approved and agreed upon, you will be allocated a dedicated Red Box project manager who will ensure all our professionals and tradespeople work seamlessly to successfully deliver a kitchen extension that perfectly fits the bill.

Single Storey Extensions In Putney & Barnes

By talking to Red Box about your single storey extension plans, you can move forward with any project with confidence. We have a long track record of successfully helping local clients with single storey wrap around extensions, single storey rear extensions and other more tailored projects. You can ask us about single storey extension roof options too. We can talk you through cable designs, lean-to and T & P shaped options.

If you are asking – how much is a single storey extension? – the answer is perhaps less than you think. Why not contact us for a quotation? If you are looking for ideas, you can find a South London extension case study here. Our project gallery contains examples of Red Box extension projects that might provide some useful inspiration.

Once an extension is complete, Putney & Barnes residents also often ask us for painting and decorating services too. The good news is, Red Box  is a member of the Painters and Decorators Association meaning you are guaranteed the best quality and highest standard of finish in your new space.

Double Storey Extensions In Putney & Barnes

If you are a Putney & Barnes resident with double storey extension plans, asking Red Box to discuss your options will help you understand potential double storey extension costs fully before moving forward. We know considering a major project such as a double side extension or double rear extension for your home can feel like a step into the unknown, but it needn’t be. Contact us, we are here to help every step of the way.

We can share our experience of similar projects in Putney & Barnes including double storey extension ‘before and after’ examples. We can do this because Red Box is the specialist building firm local residents have turned to for home extension projects for many years. We have helped countless homeowners with ambitious plans, like yours, turn dreams of extra space into reality.

Once you are happy with our quote and all the plans are agreed, the first step is to assign you a local experienced project manager who will keep all work seamlessly on track.

Double Storey Extensions In Putney & Barnes

Case Studies

Areas We Serve

We cover all postcodes in and around the Putney & Barnes area.

  • SW15
  • SW13

Why Choose Red Box


We specialise in home improvements, extensions, kitchen fitting and bathrooms as well as the associated services of plumbing, electrical and full decoration work.

Our team work closely with architects and designers, either engaged by us or which you may have already engaged. We are happy to follow your design or work with you on a design to fit your budget and taste.

We’d love to hear from you!

For any questions about house extensions in Putney & Barnes or any of our other services, please fill out the quick form on the right to drop us an email and we will be in touch.