Ask everyone for the same thing
Describe your project as concretely as possible: dimensions, preferred materials, what stays and what goes, and when work should start. Give every contractor the same information and you'll get quotes you can compare.
Put the items side by side
Make a simple table: one row per part of the work, one column per contractor. You'll see at once where a quote leaves something out, or adds something you didn't ask for.
Watch what's missing
Demolition and removal of rubble, a skip, scaffolding, finishing, cleaning up and permits: sometimes they're in one quote and not in another. Ask before you compare.
Compare materials, not just prices
A lower price may mean a different material, thinner insulation or fewer coats of paint. Have brands and models stated.
Compare excluding VAT
For renovating a home over 10 years old that is used as a private residence, the contractor can often charge 6% VAT instead of 21%, if they invoice the owner or tenant who lives there directly. So always compare quotes excluding VAT, and ask why a contractor applies a different rate. Exception: since July 2025, new heating that runs on fossil fuel is taxed at 21%. The full conditions are on the website of the FPS Finance (fin.belgium.be).
Look at the terms
Also compare how long the quote is valid, payment terms, schedule, guarantee and how extra work is charged.
A much lower price? Ask why
If one quote is far below the others, ask what's different. Sometimes there's a good reason; sometimes the extras come later.
How SyndiLink helps
Through SyndiLink you get up to three quotes from vetted contractors based on the same project description. With the Premium plan we also help you compare them by phone.