You send your renovation brief to three different trades. You get three quotes back. One is $18,000. One is $27,000. One is $34,000.
Same job. Three completely different numbers. And now you have absolutely no idea which one is right, which one is suspiciously low, which one is gouging you, and whether any of them actually priced what you asked for.
This is one of the most stressful and confusing moments in any renovation. Almost everyone experiences it. But here's what most people don't realise: wildly variable quotes are not always the trades' fault. They can absolutely be related back to a brief problem. Did you give them enough and the same scope so you could compare apples to apples?
Why do renovation quotes vary so much between trades?
Because they're all pricing different things.
When your brief is vague, every trade fills in the gaps with their own assumptions. One assumes you want the premium tapware. One prices the mid-range. One doesn't include tapware at all because they figured you'd supply it. One prices for the tile you showed them on your phone screen. One prices for a similar tile from their preferred supplier.
Same job, completely different interpretations, completely different numbers. Then there's you, sitting there with three quotes spread on the kitchen table, confused.
It's like asking three different chefs to cook your dinner, giving them all a vague description of what you feel like, and then being confused when one turns up with pasta and another turns up with a roast. You didn't give them a recipe. You can't be surprised by the variation.
What information do trades actually need to give you an accurate quote?
More than you think, and more specifically than most renovators provide.
They need to know exactly what products you've selected, including brand, model, finish, and supplier. They need to know quantities. They need to know the scope of their work specifically, not just "do the bathroom." They need install notes for anything that has a specific requirement, construction ready drawings if you want it to look exactly the way you see it in your head and they need to know what's included in their scope versus what another trade is handling.
The more specific your brief, the more accurate your quote. It really is that direct a relationship. Vague brief equals variable quote equals budget chaos. Detailed brief equals comparable quotes equals actual control. When you give them the same scope it's easier to decipher the differences in each quote and guess what, AI can help you find those differences much quicker now too.
What's the best way to brief trades for a renovation?
At the very least a complete selections schedule with install notes sent to every trade you're sourcing quotes from and ideally a full set of construction drawings. Same document/s. Same information. Every time.
Not a verbal description. Not a notes app screenshot. Not a Pinterest board. A proper brief that specifies everything, what you need done, and how you need it done.
When every trade is pricing from the same brief you can actually compare their quotes properly. You can see who's more expensive for the same scope and make an informed decision rather than guessing which variable quote is the most honest one. It's easier to have those conversations around what they've included and what they haven't.
It also gives you something to refer back to when the invoice arrives. Because "that wasn't in the scope" is a lot harder to argue when the scope is sitting right there in black and white, signed off before the job started.
Should you always get multiple quotes for renovation work?
Yes. Always. For every trade. No exceptions.
Because you cannot know if a quote is reasonable without something to compare it to. One quote in isolation tells you almost nothing. Three quotes from the same detailed brief tells you a lot. Then yes, you consider their reputation, experience beyond the price etc. etc.
Getting multiple quotes is also about understanding the market rate for your job so you can make an informed decision about who you want to work with, not just who came in lowest.
Lowest is not always best. But informed is always better than uninformed.
How do you avoid variations on your renovation invoice?
Document everything before the job starts and get your trades to confirm their quote is based on that documentation.
Variations can and do happen even with a tight brief, but you can manage that risk far more easily when you've got an agreed scope.
Not all variations are avoidable. Sometimes things happen on site that nobody could have predicted. But the variations that come from "I thought you meant" and "that wasn't in my quote" are almost entirely preventable.
The YDC Design and Execute stages were built specifically to help you create the documentation that closes those gaps. Because accurate quotes, comparable pricing, and a renovation that costs what it's supposed to cost shouldn't be a luxury. They should just be the standard. You complete the Design Concept & Selections Brief, hand that to your designer for construction ready drawings and combine those with your complete Selections Schedule to get accurate quotes from the beginning.
Ready to get quotes you can actually trust?
Check out our Design It Yourself Systems & Design With Us Services.