What affects the cost
Cost depends on worktop material (laminate vs stone vs wood), whether the layout is changing (moving plumbing/electrics vs replacing in place), unit quality, and appliance integration. Moving a sink or hob position adds cost beyond the units themselves because of the pipework and electrical work involved.
Gas hobs need a Gas Safe engineer
Installing or moving a gas hob is gas work, same as a boiler, and legally needs a Gas Safe registered engineer, not just a kitchen fitter or general plumber. If you're switching from electric to gas (or vice versa) as part of a refit, this needs coordinating separately from the general fitting work.
Kitchen lighting layers
A well-lit kitchen usually combines general ceiling lighting, task lighting (under-cabinet lights over worktops, where most food prep happens), and sometimes accent lighting — a single central ceiling light alone often leaves worktops in shadow. Worth planning lighting circuits before, not after, unit installation.
Kitchen regulations, FAQ
Do I need building control sign-off for a kitchen refit? Usually not for a like-for-like layout, but new electrical circuits need a registered electrician's certification, handled as part of that work. Can I fit my own units? Yes, unit fitting itself isn't regulated — it's the electrics and plumbing behind it that are.
Adding a kitchen island, what to consider
An island needs enough surrounding clearance to be usable (not just fit), and if it includes a sink or hob, plumbing and electrics need to reach it — often via the floor, which is far easier to plan during a full refit than retrofit into an existing floor later.
Planning a kitchen-diner layout
Combining kitchen and dining space needs enough clearance around both the cooking area and the table for comfortable movement, and often benefits from a slightly different lighting and ventilation plan than a standalone kitchen — worth discussing how the space will be used for both cooking and eating before finalising layout.
Planning bin storage properly
Built-in pull-out bin drawers, sized for recycling separation, are far easier to plan into a layout during a refit than to add afterwards — worth deciding on bin capacity and separation needs (general waste, recycling, food waste) before cabinet layout is finalised, not after.
Food waste disposal units, what to know
An under-sink food waste disposal unit needs its own electrical connection and specific plumbing configuration — not every kitchen sink setup can accommodate one without modification, so it's worth deciding early in the planning rather than as an afterthought once plumbing is first-fixed.