Renovations - Chopping Up the Works: Is Managing Your Own Trades Worth It?
More and more homeowners are choosing to split their renovation into separate trades - their own electrician, their own plumber, their own dry liner - rather than handing the whole project to one main contractor.
Get a main builder in just to do the shell, and manage the rest yourself.
It's a sensible instinct, and it can work. But it comes with risks that aren't always obvious until you're halfway through the project. Here's the short version.
Why People Do It
- Better pricing. You can shop each trade individually instead of accepting one bundled price.
- Lower risk per contractor. No single trade is holding a huge chunk of your budget.
- More control. You're closer to the project and can make decisions as you go.
- Genuine savings are possible — if it's managed properly.
Where It Goes Wrong
The risk isn't bad work from any one trade. It's what falls through the gaps between trades — because each tradesperson only quotes for what they've been told, not for the full picture.
A few examples:
- Electrician and plasterer: The electrician rewires the house, leaving chased-out walls full of holes. He didn't quote to make them good — that wasn't "his job." The plasterer turns up expecting a clean wall, finds a repair job instead, and charges extra for materials and time nobody budgeted for.
- Plumbing and bathroom fit-out: Your plumber does the heating for the whole house. A separate bathroom fitter is doing the first fix for taps, shower, and basin. If they haven't spoken, the pipework may not land where the bathroom actually needs it.
- Electrics and kitchen fit-out: Your electrician rewires the house without knowing your kitchen's final layout, because someone else is fitting the kitchen separately. Sockets end up in the wrong place and not to the correct power rating for the appliances they are intended for; or even worse, there's no power where appliances need it — discovered only once the kitchen turns up.
The pattern is always the same: whoever's doing the first fix needs the exact requirements of whatever comes after it — and if nobody's coordinating that handover, you find out the hard way.
It's Also a Compliance Risk
Some of these gaps aren't just inconvenient — they're compliance gaps. Electrical work needs certifying. Gas and heating work needs sign-off. If a piece of work falls between two trades with nobody clearly owning it, you can end up with work that isn't properly certified or Building Regs compliant — a problem that often only surfaces when you come to sell.
The Cost Reality
Be honest with yourself about the numbers. If you collect quotes from separate trades, the total at the start is almost never the total you'll pay. There will be more on top — because splitting the job this way means certain things inevitably get missed between the quotes. That's not anyone trying to catch you out; it's simply that nobody priced the whole job, only their own piece of it.
The Takeaway
Splitting your project across trades can save you real money — but only if someone takes on the coordination role a main contractor would normally provide. That means:
- Clear, written scopes for every trade
- Someone actively checking what falls between scopes, not just within them
- Confirmed responsibility for "making good" after each trade
- First-fix trades briefed on exactly what the finishing trades need, before they start
- Clarity on who's certifying compliance-critical work
- A realistic contingency built in from day one
If you've got the time and willingness to manage that, it's a genuinely viable route to a better price. If not, those gaps have a habit of finding you — usually as an invoice you didn't see coming.