What Determines Renovation Cost? 7 Key Factors That Shape Your Budget

One of the most common questions we hear is:
“Why do renovation prices vary so much between similar apartments?”

The answer lies in the details. Renovation cost is never random — it is shaped by several interconnected factors. Below are the 7 key elements that most strongly influence the final price.

1. Scope of Work

A cosmetic refresh is very different from a full renovation.
The more structural, technical, and layout changes involved, the higher the overall cost.

Clear scope = fewer surprises.

2. Electrical & Plumbing Scale

Electrical wiring, plumbing, and ventilation are often the most expensive yet invisible parts of a renovation.

Older buildings frequently require full system replacements, significantly impacting the budget.

3. Materials

Material prices vary widely:

  • tiles at €15/m² vs €80/m²

  • standard vs custom finishes

The real value lies in durability, not just appearance.

4. Labor

Skilled professionals cost more — and for good reason:

  • fewer mistakes

  • better coordination

  • higher long-term quality

Cheap labor often leads to expensive corrections later.

5. Logistics

Delivery access, storage, elevators, parking, and city-center constraints all affect cost — especially in dense urban environments.

6. Timeline

Shorter deadlines usually increase costs.
Rushed projects require more resources and higher coordination intensity.

Planning saves money.

7. Unplanned Works

Once walls or floors are opened, hidden issues may appear:

  • damaged pipes

  • outdated wiring

  • structural defects

This is why a professional budget always includes a 10–15% contingency reserve.

In conclusion

Renovation cost is not just a number — it reflects planning quality, technical decisions, and execution discipline. A transparent process leads to calmer projects and predictable results.

At Ki Hus, we believe clarity creates confidence — for both the budget and the people living in the space.

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Top 5 Renovation Mistakes and How to Avoid Them