What to compare first
How clearly the team explains scope and exclusions.
Whether the quotation is itemised.
How they think about storage, maintenance, and usability.
Whether timelines are realistic, not just attractive.
What happens after handover if issues come up.
Warning signs
Very low total without detailed scope.
Too much design talk, no execution process.
No clarity on hardware, materials, or warranty.
Pressure to close before measurements and planning are discussed.