Renovations in Hayes
How Much Does a Home Extension Cost in Hayes? A Local Guide
11 January 2026
Hayes' broad mix of interwar semis and post-war housing generally sits on genuinely generous plots, which gives good flexibility for either a rear or side extension depending on your specific garden shape.
Extension footprint, roof style, and whether you're combining the build with a kitchen renovation or wider internal remodelling are the main cost drivers - we'll talk through the realistic options for your plot at survey.
Every Hayes project starts with a proper site visit, followed by a clear, fixed price for exactly what we agree together.
Frequently asked questions
Rear or side extension - which suits Hayes better?
It depends on your specific plot shape - we'll talk through both options honestly at your site visit.
Can I combine an extension with internal remodelling?
Yes - many Hayes clients pair an extension with wider internal changes for a bigger overall transformation.
Thinking about a project in Hayes?
Book a free site visit and we'll talk through scope, timeline and a fixed price.
Speak with us