Renovation & construction
Renovation premium: sale price versus total CAPEX
The buyer’s premium is not investor profit. CAPEX, time and transaction costs sit between the two.
A finished home may sell for more, but its visual premium is not the equity result. Demolition, systems, permits, management, vacancy, finance and sale costs consume value.
Mamre studies renovation premiums by housing age and characteristics. Caloia examines improvements and housing wealth. Neither provides a universal Barcelona margin.
Value bridge
Add purchase price, tax, design, permits, works, equipment, contingency, management and time. Then identify what the next buyer values: legal layout, comfort, a resolved defect or efficiency.
Use renovation budget control and the due diligence checklist. In the DNPI calculator, test three exits and a delay. Comparables must match street, building, floor, light, lift and legal status.
Sources
An average premium is not guaranteed profit.
Decision worksheet
| Question | Evidence | Decision |
|---|---|---|
| What must be evidenced? | Asset-specific document, calculation or inspection | Verified / assumption / open |
| What changes the full budget? | Price, tax, works, contingency, holding and exit | Recalculate base and downside cases |
| What stops the thesis? | A pre-defined red flag | Stop / request evidence / continue |
Before the next commitment
- Date and cite every key figure.
- Assign an owner and deadline to each open question.
- Do not apply an area average to the asset without adjustment.
- Keep the version of the model used for the decision.
Review a specific property with DNPI
Related priority articles
Questions and answers
Is premium the same as profit?
No. CAPEX, time and transaction costs must be deducted.
Which comparables matter?
Those matching micro-location, building and condition.
What is a useful downside?
Cost overrun, delay and lower exit price.
