Updated October 2026 · Fraser Bond
Homeowners · Value
Improvements that add value
Extrabedroom
Loftconversion
Kitchen& bathroom
EPCupgrades
In short: In London, the improvements that usually add most value create usable space: loft conversions, rear or side-return extensions, and turning a layout into an extra bedroom or bathroom. Kitchens and bathrooms, better energy efficiency, and fresh decoration and kerb appeal also help sales. Swimming pools, very personal styling, and over-improving for the street rarely pay back. Check planning, permitted development, building regulations and party wall rules first, and compare costs with the likely uplift.
Extension payback
Estimated uplift–
Build cost–
Gain before fees–
Illustrative only. Ask us for a valuation.
Frequently asked questions
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Does a loft add value?
Usually, especially with a bathroom.
Do I need party wall agreements?
Often, for extensions and lofts.
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