Most renovations don’t start with a grand plan. They start with a specific annoyance — a kitchen you’ve stopped enjoying cooking in, a garage full of things you can’t quite throw away, a loft you’ve never once climbed into except to change a smoke alarm battery. Solve one of these and homeowners across Kent, Surrey, Sutton, and Crawley often find themselves asking the same question: what else in this house is underused?
We’ve spent over 20 years answering that question for local homeowners. Here’s what we’ve learned about where to start, what actually matters, and what tends to go wrong when it isn’t planned properly.
Garage Conversions: Cheap Space, If Done Properly
A garage typically costs less to convert than to build an equivalent extension, mainly because you’re not starting from foundations. But “cheap” only holds if the job is done to habitable-room standard, not just boxed in. That means:
- Floor build-up so it sits level with the rest of the house, with insulation underneath
- Wall and ceiling insulation meeting current Building Regulations — garages are rarely insulated to the same standard as the house
- Damp-proofing, since garage floors and walls are usually in direct contact with ground moisture in a way habitable rooms aren’t
- Replacing the garage door with a wall, window, or bifold doors, depending on how the space will be used
Skip the damp-proofing or insulation stage and you’ll have a room that looks finished but is cold, prone to condensation, and won’t hold up well if you ever come to sell.
Most garage conversions fall under Permitted Development if you’re not extending the footprint or altering the exterior significantly — but this varies by council, and conservation areas (which cover parts of Kent and Surrey) can change that. Worth a five-minute check before committing to a design.
Kitchen Installations & Refurbishment
A kitchen refurbishment is rarely just “new units, new worktop.” The projects that actually improve how a family lives in a space usually involve rethinking the layout first — where the fridge, sink, and hob sit relative to each other, whether the room needs to open onto a dining or living space, and how much storage is lost to awkward corners in the current design.
The build side then covers first-fix electrics and plumbing (moved to match the new layout), structural work if a wall’s coming out, then the fit — cabinetry, worktops, splashbacks, appliances. Getting the sequencing right matters more than people expect: plumbing and electrics need to be signed off before units go in, not worked around afterward.
Loft Conversions: Often the Best Value-for-Space Ratio
A loft conversion adds a room without touching your garden or your house’s footprint, which is part of why it’s consistently rated as one of the higher-return renovations for UK homes. The three things that determine whether a loft is viable before you even start:
- Head height — usually needs at least 2.2m at the highest point after flooring and insulation are added
- Roof structure — trussed roofs need more structural work than traditional rafter roofs
- Staircase access — fitting a compliant staircase without eating into a room below is often the trickiest part of the design
Building Regulations sign-off is mandatory for a loft conversion regardless of whether planning permission is needed, covering fire escape routes, insulation, and structural support.
Custom House Building
For homeowners in Kent taking on a full self-build or custom-build project, the process runs through the same discipline as any conversion — design, planning permission, building regulations, and construction — just at a larger scale and typically over a longer timeline.
What Actually Makes These Projects Go Well
The projects that go smoothly tend to share one thing: a single team responsible for the whole job, rather than separate tradespeople who each hand off to the next without full context. That’s the model we’ve built over 20 years of garage conversions, kitchen refurbishments, loft conversions, and custom builds across Kent, Surrey, Sutton, and Crawley.
Considering a project? Whichever room’s bothering you most, get in touch with Lion and Leinster for a straightforward conversation about what’s realistic for your home and budget.