Design & Architecture · 8 min read

7 Common Construction Mistakes in Coastal Homes

Discover common construction mistakes in coastal homes and how to avoid them.

Updated: 2026-11-04

Building a villa near the sea requires unique challenges and decisions. Understanding the seven common construction mistakes in such projects can help you avoid costly errors.

Square Metre Cost vs. Real Budget

Square metre cost typically covers only the basic elements such as the structure, infill walls, and roof. However, a villa's total cost is not limited to these elements. Kitchens, bathrooms, custom finishes, and landscaping significantly affect the budget.

When building a villa near the sea, environmental factors like salty air and humidity must also be considered. This impacts the durability of materials and, consequently, the cost. Therefore, the cost per square metre should encompass all these factors.

Window Choice: Ready-Made or Custom?

Ready-made window systems are generally more cost-effective, but not always ideal for a seaside home. Salty air and wind test the durability of window profiles and glass.

Custom-made, thermally broken windows perform better in such harsh conditions. The right profile, glass quality, corner joints, and sill details ensure the window system's longevity.

Natural Stone Facade and Its Details

A natural stone facade is not merely a cladding item. The thickness of the stone, fixing methods, subframe, corner, sill, and joint details change both the material and labor in the same facade area.

On the coast, the fixing methods and subframe used for the stone determine its resistance to saltwater and wind. Proper stone selection and detailing extend the facade's lifespan.

Two Coastal Homes: Material Choice

Two homes with the same floor area can have different budgets due to the materials used. On the coast, stainless steel or painted aluminum should be chosen over bare iron.

These materials are more resistant to salty air conditions and reduce maintenance costs in the long run. Material choice directly affects the home's durability and aesthetics.

Decisions Before Quotations

Before the quotation phase, the shell, envelope, mechanical systems, and external works must be clarified. These elements constitute a large portion of the total cost and affect the project timeline.

Shell and envelope choices determine energy efficiency and maintenance needs, while mechanical systems impact comfort and operational costs. External works ensure aesthetic and environmental harmony.

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