Luxury Home &
Villa Renovation
in Barcelona
Architecture · Interior Design · Turnkey Construction
Full luxury villa renovations in Barcelona and surrounding areas: Sitges, Castelldefels, Gavà Mar and more. One coordinated team, fixed planning and no unnecessary surprises.
You Want to Renovate Your Home. Not Turn It Into Your Second Job.
A renovation quickly becomes more than choosing a kitchen, a floor or a bathroom. There are technical decisions, budgets, permits, materials, trades and dozens of details that have to work together at the right moment.
Too Many Moving Parts
Architects, technicians, suppliers and different trades may all depend on decisions made by someone else.
When nobody connects those decisions, the homeowner becomes the person in the middle.
We Organise the Complexity
Coste Casa connects the technical, practical and construction sides of the project so information and decisions reach the right people when they are needed.
You remain involved without having to personally manage everything happening behind the renovation.
Your Time Stays Yours
You concentrate on the decisions that define your home instead of spending your days coordinating the people working on it.
Less chasing. Fewer interruptions. Clearer decisions.
That's why our renovation services are designed to work together.
EXPLORE HOW WE MANAGE YOUR RENOVATION ↓Renovation Services
Design, Build & Turnkey
We renovate villas, houses and apartments in Sitges, Castelldefels, Gavà Mar and the Barcelona Coast — from complete renovations to kitchens, bathrooms, terraces, façades and outdoor spaces.
One team for design, permits, construction and finishes. We coordinate the trades, manage the renovation and keep you informed throughout the works — with service available in English, Spanish and Russian.
Villa Renovation
Services
Transform an existing villa around the way you want to live today — improving layout, comfort, functionality and finishes while making the most of the property you already have.
From the first decisions to the final handover, we manage the renovation as one complete project — so you can focus on the home you’re creating, not everything required to build it.
Turn your ideas into a project that can actually be approved and built. We work with licensed Catalan architects and help you understand the technical decisions in English, Spanish or Russian.
Layouts, materials, lighting and finishes are considered together around how you want to live in the space — creating a home that works as well as it looks.
For properties where design, materials and execution need a higher level of attention. We bring the details together to create a home that feels considered, consistent and built around your expectations — not a predefined standard.
Design decisions are made with construction in mind from the beginning. Materials, installations, costs and technical solutions are considered together — helping turn a good idea into something that works in the real building.
A renovation generates decisions every week. We follow progress, costs, technical information and the work on site so issues can be addressed when they appear — instead of becoming your problem to solve.
Ready to Turn Your Plans Into a Real Project?
Tell us about your property, what you want to change and where you are in the process. We'll help you understand what the next step should be.
Local team. Shared progress.
Your renovation,
wherever you are.
Living abroad should not mean losing touch with your renovation. We coordinate the work locally and give you access to a shared project plan, so you can follow progress and take part in the decisions that matter.
- 01
Clear scope & budget
Know what is included before work begins. Changes and additional work are quoted separately for your approval before we proceed.
- 02
A conversation you understand
Denis and Irina are your multilingual points of contact. Discuss your project in English, Spanish or Russian, with clear explanations of the decisions ahead.
- 03
Support with permits
We coordinate with the architects and technical professionals involved to help manage the permits your renovation requires and explain the next steps.
- 04
Your project in one shared app
We share your renovation plan in Asana with you, the site manager and the people involved. Task updates, photos and completion notices stay connected to the work they relate to.
ASANA · COSTE CASA
Your renovation.
One shared plan.
See what is planned, follow the photos and know when each task is finished. We share your renovation plan in Asana with you, the site manager and the people involved.

- 1
We share the plan
We organise the work into tasks in Asana and invite you, the site manager and the people involved.
- 2
We add progress photos
As work is carried out, the team uploads photos to the relevant task.
- 3
We mark the task complete
Once that task is finished, its status is updated in the shared plan.
- 4
You receive an update
Notifications let you and the people following the task know about the update. Open it to see the photos and details.
Less chasing for updates. A clearer view of your renovation.
Luxury Renovation Projects
Barcelona Region
Every project tells a story. Before and after transformations across Sitges, Castelldefels, Gavà Mar and the Barcelona coast — each one delivered on time, on budget.
Our experience in Sitges spans more than 8 years, delivering luxury villa renovations with local knowledge and full project control.
Luxury Villa Renovation in Castelldefels
A complete exterior transformation showing the evolution from the construction phase to the finished villa.
Before
After
What Our
Clients Say
We have been working in Sitges and surrounding premium areas for over 8 years, creating high-quality villa renovation projects.
Posted on Google![]()
yahya bouzarouataTrustindex verifies that the original source of the review is Google.
To be honest, a very professional person. he knows what he does and gives the best to his clients.Posted on Google![]()
Lorena LorenzoTrustindex verifies that the original source of the review is Google.
Una empresa seria y profesional. Hemos pedido presupuesto y desde el momento 1 demostraron total involucración en el proyecto, siempre con actitud proactiva y queriando ayudarnos a optimizar costos sin bajar calidades. Compañía súper recomendable para construir.Posted on Google![]()
tutoria 2ABTrustindex verifies that the original source of the review is Google.
MUY BUEN TRABAJO TOCABA REFORMAR COCINA Y SE CAYO EL TECHO. RAPIDA SOLUCION. ENVIO FOTOS DE EJEMPLO. TAMBIEN CAMBIARON EL TERMO MUCHAS GRACIAS POR VUESTRA PROFESIONALIDADPosted on Google![]()
Marisa Torrecilla HospitalTrustindex verifies that the original source of the review is Google.
Excelente trabajo el de Costecasa. Lo que mas hemos valorado es su implicación en la obra, organización y cumplimiento de plazos, su ajuste al presupuesto inicial y todo su equipo de profesionales. Siempre que tengo ocasión les recomiendo !Posted on Google![]()
Maria SoriaTrustindex verifies that the original source of the review is Google.
Trato genial , tanto de DENIS como de IRINA ,...Su trato ha sido de lo bueno lo mejor , sin duda un buen equipo , son muy cercanos . Solución a tope , amigables , nobles ,y excelente profesionales. Sin duda un 20 sobre 10Posted on Google![]()
Fabrice RodriguezTrustindex verifies that the original source of the review is Google.
Nous avons rencontré Denis pour notre projet de Construction. Nous avons été enchanté de son contact professionnel et très réactif. Denis est à l'écoute et à la recherche constante de solutions adaptées. Les maisons réalisées par Denis lors de la visite de différentes réalisations sont de très belle qualité. Pour des raisons financière, nous avons du renoncer à ce projet mais c'est avec regret car nous sommes convaincu que nous aurions eu une très belle maison de belle qualité et optimisée au niveau énergétique. Les outils de suivi de chantier et le professionalisme de Denis étant dejà une belle assurance de qualité. Conocimos a Denis para nuestro proyecto de Construcción. Quedamos encantados con su contacto profesional y muy receptivo. Denis escucha y busca constantemente soluciones adecuadas. Las casas hechas por Denis durante las visitas de varios logros son de muy buena calidad. Por motivos económicos tuvimos que abandonar este proyecto pero es con pesar porque estamos convencidos de que hubiésemos tenido una casa muy bonita de buena calidad y optimizada a nivel energético. Las herramientas de monitoreo del sitio y la profesionalidad de Denis ya son una gran garantía de calidad.Posted on Google![]()
yahir escude hortelanoTrustindex verifies that the original source of the review is Google.
Trato excelente y profesional por parte de CosteCasa y en concreto por parte de Irina, nos atendió genial, nos lo explicó todo al detalle y nos fuimos a casa sin ninguna duda pendiente (y eso que llevábamos muchas). Mil gracias por la atención, amabilidad y profesionalidad.Posted on Google![]()
Emanuel KosacciTrustindex verifies that the original source of the review is Google.
I seldom write a review but when someone's service goes above and beyond what is expected, I feel compelled to give my impression. Denis was suggested to me by my real estate agent who said that he had very capricious French clients and Denis was the only one who could meet their expectations in quality. I decided to give Denis a call and from the first meeting he was professional, punctual and very knowledgeable. He walked me step by step through the construction process and gave me a very competitive quote (I had 6 quotes in total). Denis was very upfront with the pricing and delivered as expected. He gave me many suggestions in terms of the details (extra insulation, heated floors, etc) that add value to the house and make it truly a home. I would give Denis and Costecasa 6 stars if the option existed.Posted on Google![]()
Isaac San Miguel FerreiroTrustindex verifies that the original source of the review is Google.
Personas muy agradables con la que trabajan. . 100% recomendado .
Frequently Asked Questions About
Villa Renovation in Sitges
These are some of the most common questions property owners ask before starting a renovation project in Sitges.
Do I need permits for villa renovation in Sitges?
In most cases, yes. The type of permit depends on the scope of works. Structural changes, extensions, facade interventions, and certain technical upgrades usually require formal approval. We help clients understand the required process from the beginning.
How long does a villa renovation take?
Timelines vary according to property size, complexity, permit requirements, material lead times, and project scope. Many villa renovations take between 3 and 9 months, while more complex luxury projects may require longer planning and execution.
Can I renovate my villa in Sitges while living abroad?
Yes. Many of our clients manage their villa renovation remotely. With the right communication flow, project oversight, and milestone structure, the process can be handled efficiently without needing constant on-site presence.
What is the average budget for villa renovation in Sitges?
Budget depends on the size of the villa, technical condition, finish level, and whether the project includes structural or exterior works. Premium projects often begin at substantial investment levels, so a tailored assessment is the best starting point.
Renovation Guides
Barcelona
With more than 8 years of experience, we renovate premium villas in Sitges and nearby coastal areas.
For over 8 years, we have been delivering luxury renovation projects in Sitges and across the Barcelona Coast.
Buying a Property to Renovate in Sitges — Smart Investment Guide (2026)
Cost of Renovating a House in Sitges — Full Price Guide (2026)
Renovating a Villa in Sitges — Complete Guide
Ready to Renovate Your
Villa in Barcelona?
Book a free 30-minute consultation with our team. We’ll assess your property, clarify your vision and give you a realistic picture of what’s achievable — with no obligation whatsoever.
30 minutes · No obligation · English, Spanish & Russian


