The most common renovation mistakes
Updated 5 Aug 2026
Most renovation problems are decided before the first demolition: by an unclear scope, missing measurements or the wrong work sequence.
This overview focuses on practical mistakes that repeatedly create rework, delays or compromises in finished interiors.
Use it as a checklist before ordering materials and signing off the first-fix layout.
Eight mistakes worth avoiding
Starting without a clear scope
A vague brief changes the budget every week. Define rooms, finishes, services and exclusions before work begins.
Underestimating the budget
Keep a sensible reserve for hidden defects, changes and final connections.
Ignoring the electrical and plumbing plan
Late changes to sockets, lights and water points are expensive after walls and ceilings are finished.
Choosing materials by appearance only
Check water exposure, wear, substrate, maintenance and compatibility with the installation.
Using too few sockets
Plan around furniture, appliances, worktops and future electronics, not only around empty walls.
Starting work in the wrong order
Services, wet processes, drying times and finishing trades must follow a coordinated sequence.
Skipping measurements
Small errors in doors, niches and furniture positions create visible compromises later.
Leaving no time reserve
Material deliveries, drying and discoveries in older buildings can move the schedule.
How to avoid these mistakes
- Confirm the layout and furniture before ordering materials.
- Create a written scope with inclusions and exclusions.
- Approve socket, lighting, plumbing and ventilation positions before first fix.
- Choose products for the actual room and substrate.
- Coordinate demolition, installations, wet work, drying and finishing.
- Keep a realistic financial and time reserve.
Want to review the project with a team that builds it?
We can inspect the flat, take measurements and walk through the sequence of work with you. You will see where a saving is sensible and where a cheaper shortcut may become rework later.
Frequently asked questions
How do I recognise a reliable renovation company?
Look for a clear written scope, realistic pricing, named responsibility, transparent changes and verifiable examples of work. Ask how the company handles defects, variations and coordination between trades.
What budget reserve should I keep?
The right reserve depends on the building and scope. Older flats usually need more contingency because hidden conditions are more likely; agree how any reserve and changes will be approved.
What is the correct renovation sequence?
Typically: survey and design, protection and demolition, structural changes, rough services, plasterboard and wet work, drying, surfaces, floors, doors, fittings, testing and final cleaning.
Related service
Apartment renovationsComplete turnkey renovation of apartments and houses - from demolition to final clean-up. We take on projects in Prague and the surrounding area.