ePrivacy and GPDR Cookie Consent by Cookie Consent Kitchen diner extension ideas: what to consider

Kitchen diner extension ideas: what to consider

5 min read
Oct '25 • by Molly-Sue Moore

Quick summary

A kitchen diner extension in the UK typically costs between £40,000 and £200,000, depending on size, materials, and complexity, with larger projects adding more. Expect it to take at least 10 weeks to build, but longer if your existing home needs more work or specific options are involved. Costs and times can vary based on your property’s condition and design choices.

© Matt Gamble

The kitchen diner extension is one of the most popular renovation paths for UK homeowners. We explore what makes it such an appealing option, how it could benefit your home and how it could impact your everyday life. Let’s dive in…

Why should you opt for a kitchen diner extension?

Kitchen diner extensions typically open up your kitchen space by increasing the square footage and typically reorganising the layout to accommodate a dining area. The effect of this is to create a dedicated dining area in the kitchen, making it both a sociable and functional space.

Kitchen diner extensions can be a fantastic option for families with young children where it might feel like you’re constantly juggling food prep, work, the school run and getting important quality time together. They can also be great options for people who love to host friends and family from the comfort of their own home.

Does a kitchen diner extension add value to your home?

According to Homebuilding & Renovating, getting a kitchen extension could add up to 20% value to your property. This may be dependent on the size and scale of the extension, as well as the features included and the type of materials that may be used to complete the build.

A light, bright kitchen diner extension at a Resi client’s beautiful home in Merton© Matt Gamble

How much will construction cost?