Building a House in Costa del Sol: Markku’s Experience and Real Costs

Author: Eve Keerus-Jusupov, CEO of Merlis Homes SL.
Helping you navigate Costa del Sol property with confidence and peace of mind.
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Building Your Own House in Marbella – What to Expect
Imagine waking up in your new home in Marbella.
A terrace, a view, warm sun — everything exactly as you planned.
Now the second scenario.
The project has been delayed for over a year. The budget has increased by 1.5x. New decisions need to be made every week. No one gives a clear answer on when it will be finished.
Both stories start with the same decision: building your own house.

Markku’s experience of building a house in Marbella shows very clearly where the process actually becomes complicated.
Why Building a House in Costa del Sol Is Not as Simple as It Looks
At first, the process looks straightforward. Architect, plot, project, builder — and you start building.
In reality, every step adds complexity. Permits, approvals, timelines, and people who all need to align. Each of these can slow the project down or increase costs.
Why building a house in Costa del Sol becomes complicated:
- the process is not linear
- decisions depend on multiple parties
- you do not control the timeline
- costs change during the project
The Plot Determines Everything
When you plan to build a house in Costa del Sol, the project is won or lost at the plot.
A plot is not just a location. It defines what you can build, how much it will cost, and whether the project makes sense.
If the plot is wrong, no architect or builder can fix it later.
What to check before buying:
- clear building rights
- allowed build size
- water, electricity, and access
- whether similar homes sell at viable prices
A cheap plot often creates expensive problems later.
Building a House in Marbella Means Slower Timelines
Costa del Sol is not one system. Each municipality works differently.
Building a house in Marbella is known to be one of the slower processes.
What this means in practice:
- building permits can take 12–18 months
- documentation must be exact
- changes restart approvals
Other areas can be faster, but there are no guarantees.
Cost to Build a House in Costa del Sol – The Real Numbers
The biggest mistake is underestimating the budget.
At the start, everything looks controlled. As the project moves forward, costs expand.
Realistic rule:
- planned budget × 1.5
If you plan €400,000, expect closer to €600,000.
Costs people underestimate:
- taxes and VAT
- architect and project management
- technical supervision
- project changes
- delays
Main Risks When Building in Costa del Sol
Problems are predictable. They tend to happen in the same areas.
Upfront Payments
If you pay too much upfront, you lose control.
The work may slow down, but payments continue.
Better approach:
- link payments to completed stages
- verify work before paying
Architect and Builder Misalignment
If they are not aligned, the project breaks down.
Typical outcomes:
- rework
- delays
- higher costs
Build vs Buy in Costa del Sol
Many assume building is the best way to get exactly what they want.
In reality, building a house in Costa del Sol means more time, more risk, and more uncertainty.
New build:
- longer process
- more approvals
- higher risk
Renovation:
- faster start
- more flexible
- easier to control
Why Smaller Houses Are Not Cheaper to Build
Smaller does not mean cheaper.
This is especially true when building in Costa del Sol.
Why:
- plots are designed for larger homes
- fixed costs stay the same
- overheads take a bigger share
A small house often delivers weak returns.
How to Approach the Project Realistically
If you approach building with clear expectations, decisions become easier.
Minimum requirements:
- a strong local team
- financial buffer
- time buffer
Where to start:
- start with a preliminary design
- verify the plot before buying
- include taxes from day one
- choose the right people, not the lowest price
Conclusion
Building a house in Costa del Sol is possible, but it is not simple.
- timelines are long
- costs increase
- risks are predictable
The mistake is not building.
The mistake is starting without understanding the process.
Before you decide to build a house in Costa del Sol, speak to someone who has done it.
