Why You Should Never Sign a Construction Contract in Spain Without Legal and Technical Advice

Building a home in Spain can be one of the most exciting experiences of your life, but it can also become a financial and legal nightmare if you sign a construction contract without proper guidance. At Coast Projects Mallorca, we regularly meet clients who come to us after signing agreements that were poorly drafted or unclear, leaving them exposed to hidden costs and delays.

Whether you are buying land, starting a new build, or hiring a construction company for a renovation, understanding how construction contracts work in Spain, and having the right professionals from day one, is essential to protect your investment.

Legal advice construction contract Mallorca, Spain

The hidden risks of vague construction contracts in Spain

Many private developers and homeowners trust that the quote from the construction company covers everything, but that’s rarely the case.

We’ve seen countless examples where the initial contract lacked clear detail. Months later, the builder presented additional “complementary” costs or “extras” that were not included in the original estimate.

These issues often arise because:

• The contract didn’t specify the scope of works clearly.

• The pricing wasn’t broken down in detail.

• There was no clause protecting the client against unilateral price changes.

Without clear definitions, large construction companies can easily exploit these gaps, leaving the client uncertain, frustrated, and legally unprotected.

Why you need a real estate lawyer from day one

Having a real estate lawyer in Spain is not an optional luxury, it’s a vital protection tool.

Before you sign any contract related to the purchase or construction of a property, a lawyer ensures that every clause is transparent and legally sound.

A real estate lawyer in Mallorca will:

• Review every document before you sign.

• Ensure payments, timelines, and penalties are clearly stated.

• Identify hidden risks or abusive clauses.

• Verify the company’s credentials, licenses, and insurance coverage.

• Protect you if disputes or delays occur.

This step may take just a few hours but can save you months of legal battles and thousands of euros in unexpected costs later.

The importance of a Project Manager in construction

Once the contract is signed and the works begin, a Project Manager (engineer) becomes your eyes and ears on site.

Their job is to:

• Supervise that the builder follows the approved design and specifications.

• Monitor construction progress, quality control, and timeline compliance.

• Approve work certificates and payments only when justified.

• Keep an updated cost and progress report.

In short, while the lawyer ensures you are legally protected, the project manager guarantees that what was agreed is actually built, within budget, timeframe, and expected quality.

Coast Projects: legal and technical expertise under one roof

At Coast Projects Mallorca, we offer a unique combination of legal and engineering expertise.

Our team includes a real estate lawyer and an engineer & project manager, both with extensive experience in the construction and real estate sector in Mallorca.

We assist private clients and investors throughout every stage of their project:

• Legal review of contracts and purchase documents.

• Technical supervision of construction and renovation works.

• Cost control, timeline management, and quality assurance.

Our mission is simple: to make sure your investment in Spain is safe, transparent, and stress-free.

Final advice: prevention is protection

Before signing any construction or property purchase contract in Spain, remember:

"Prevention is always cheaper than correction."

Hiring a real estate lawyer and a project manager from the start gives you full control — legally, technically, and financially.

A well-managed project doesn’t just build a house — it builds trust.