About Coste Casa Renovation & Construction Specialists
8+ Years Experience · Barcelona & Costa Garraf · Licensed in Catalonia
Coste Casa specialises in high-quality home renovations, villa refurbishment, home extensions and custom residential construction across Barcelona and the Costa Garraf region. With a focus on craftsmanship, energy efficiency and transparent project management, we help homeowners create comfortable, functional and sustainable living spaces tailored to their lifestyle and long-term needs.
Who We Are
Coste Casa is a licensed renovation and construction company with more than 8 years of experience in Catalonia. We specialise in high-quality home renovations, villa refurbishments, home extensions and custom residential construction projects — delivering exceptional craftsmanship, efficient project management and complete transparency from the initial consultation through to final handover.
Our work spans Barcelona, Sitges, Sant Pere de Ribes, Vilanova i la Geltrú and the surrounding Costa Garraf area. We deliver residential projects of all sizes — from kitchen and bathroom renovations to complete home transformations, structural improvements, extensions and bespoke villa refurbishment projects designed around each client’s lifestyle and goals.
What makes Coste Casa different is simple: we manage the entire process, so you can enjoy a smoother and more predictable experience. From planning and permits to supplier coordination, construction management and on-site supervision, our team provides a single point of contact throughout the project.
Our clients choose us because they value quality, reliability and clear communication. They want a professional team that keeps projects organised, provides regular updates and delivers results that meet both functional needs and long-term expectations. That is where Coste Casa brings real value.
Costecasa
Renovation Company Credentials
What Make
Coste Casa Different
Energy-Efficient Building Expertise
Coste Casa places a strong focus on energy efficiency, sustainable construction and modern building solutions. From high-performance insulation systems to carefully selected materials and construction methods, we help homeowners improve comfort, reduce energy consumption and enhance the long-term value of their property. Energy performance is considered from the earliest planning stages of every project, ensuring that efficiency and functionality work together from the start.
Transparent Project Management
Our project management approach is built around organisation, communication and continuous oversight. Every stage of the project is carefully planned, monitored and coordinated to help maintain progress and minimise delays. Through clear communication between the client, designers, technical specialists and construction teams, everyone remains aligned throughout the process. This creates a smoother experience, better decision-making and greater confidence from the first consultation to project completion.
One Team, One Responsibility
Architecture, design coordination, construction management and project delivery are managed through a single, integrated team. This streamlined approach reduces complexity, improves communication and ensures accountability throughout the project. Rather than coordinating multiple contractors independently, clients benefit from one experienced team overseeing every stage from planning through to final handover.
Clear and Detailed Budget Planning
Every Coste Casa project begins with a detailed scope of work and a transparent budget proposal. We believe clients should have a clear understanding of costs, timelines and project expectations before construction begins. If changes or unforeseen circumstances arise during the project, they are discussed openly and approved before additional work proceeds, helping clients make informed decisions with confidence.
Fully Licensed & REA Registered
Coste Casa is a licensed construction and renovation company operating in Catalonia and registered with the relevant industry authorities. We work with qualified professionals, maintain appropriate insurance coverage and follow all applicable regulations to ensure every project is delivered safely and professionally.
8+ Years of Local Experience
With more than 8 years of experience in Catalonia, Coste Casa has built strong relationships with local suppliers, technical professionals and industry partners. Our knowledge of local building requirements, planning processes and construction practices helps projects progress efficiently from concept to completion.
Proven Residential Expertise
We specialise in residential renovation, villa refurbishment, home extensions and custom construction projects across Barcelona and the Costa Garraf region. Our reputation has been built through successful projects, long-term client relationships and a commitment to quality workmanship at every stage.
Three Languages
English, Spanish, Russian and Catalan are spoken in-house, helping international and local clients communicate clearly throughout the project. Contracts, project documentation and regular updates can be provided in English, making the construction process more accessible for overseas property owners.
Structured Project Planning
Every project follows a clearly defined scope of work, timeline and construction schedule. Clients receive regular progress updates and clear communication throughout each stage of the process, providing greater visibility, organisation and confidence from the initial planning phase through to final completion.
4.8 Google Rating
Coste Casa is proud to maintain a strong reputation among homeowners across Barcelona and the Costa Garraf region. Our Google reviews reflect our commitment to quality workmanship, professional service and transparent communication throughout every project.
Beyond Renovation: Passive House & Prefabricated Construction
In addition to renovation and refurbishment projects, Coste Casa also offers high-performance prefabricated and energy-efficient home construction. Our approach combines bioclimatic design principles, modern timber-frame building systems and carefully selected materials to create comfortable, sustainable homes tailored to the Mediterranean lifestyle.
Every project is designed with a strong focus on energy efficiency, indoor comfort and long-term durability. By integrating architectural planning, construction expertise and sustainable building practices from the outset, we help homeowners achieve modern living spaces that are both functional and environmentally responsible.
To maintain quality standards and close client involvement, we carefully manage the number of construction projects undertaken each year. This allows our team to provide personalised guidance throughout the design, material selection and construction process while maintaining the attention to detail that defines every Coste Casa project.
Passive House Specification Highlights
- High-performance wall systems with a total thickness of approximately 30 cm, designed to achieve excellent thermal insulation and energy efficiency.
- Bioclimatic architecture adapted to the Mediterranean and Catalan climate.
- Sustainably sourced and environmentally conscious building materials.
- Designed to achieve outstanding energy performance and support high energy-efficiency ratings
- Precision-engineered timber-frame construction for speed, accuracy and long-term performance
- Typical construction programme of approximately 4–7 months from groundbreaking to project completion, depending on project scope and site conditions.
How We Work
Our Principles
Quality That Does Not Compromise
We work with carefully selected materials and trusted construction methods on every project. Our team focuses on delivering workmanship that is not only visually impressive but also durable, functional and built to perform over time. Every project receives the same level of attention to detail, regardless of size or complexity.
Deadlines Are Commitments
Successful projects rely on careful planning, coordination and consistent communication. We establish realistic timelines from the outset and actively manage every stage of the construction process to help projects progress efficiently. Our goal is to deliver on agreed schedules while maintaining the quality standards our clients expect.
Transparency — Always
Clear communication is at the heart of every Coste Casa project. From initial budgets and project scope to construction progress and key decisions, we keep clients informed throughout the process. We believe that transparency builds trust and allows homeowners to make confident decisions at every stage of their renovation or construction project.
Stress-Free by Design
Renovation and construction projects can be complex, which is why we provide structured project management and a single point of contact throughout the process. By coordinating planning, suppliers, trades and site supervision, we help reduce uncertainty and create a smoother experience, allowing clients to focus on the excitement of transforming their home rather than managing day-to-day construction challenges.
Villa Renovation Sitges
Villa Renovation Castelldefels
Luxury Renovation Gava Mar
Let's Talk About Your Project
From home renovations and villa refurbishments to complete property transformations, we help homeowners create spaces that are functional, comfortable and built around their lifestyle. Your first consultation is free.
30 minutes · No obligation · English, Spanish & Russian