
Technical installations and renovations in Castelldefels
Renovations · Electrics · Plumbing · Heat pumps · Solar energy · Maintenance
We design, install and renovate every space, taking care of both the technical side and the finishes, with a professional, personal service from start to finish.
- 15+ years of experience
- Renovation and installations with one team
- Quote with no obligation







Years of experience
About us
A new generation, the same way of working
Marin57 grew out of a family trade in installations spanning two generations. After more than 15 years in the trade, we have taken the step of starting our own business to carry on that path, keeping the experience, the know-how and the trust of the clients who have been with us for years.
Today we still work with the same philosophy: a close, personal service, professional advice and special attention to every detail, from a small installation to a full renovation.

Our services
Installations, renovations and solutions for your home and business
From a small installation to a full renovation.
Got an idea? Tell us and we will take care of it.
We work from Castelldefels across Barcelona and the surrounding area.

Full renovations
We coordinate the installations and all the work on your renovation, from start to finish.

Aerothermal heat pumps
Heating, cooling and hot water with more efficient energy use, also with underfloor heating.

Maintenance
Servicing of water pumps, pressure switches and other installations to keep everything running.
Need something else?
Tell us what you need and we will prepare a free, no-obligation quote.
What sets us apart
Your trust is what drives us
When you trust an installation or a renovation to a professional, it is important to know you are in good hands. For us, communication and trust are a fundamental part of every project. We listen, answer your questions and support you throughout the process.
We keep in direct contact so you always know how your project is going.
With our team experienced in installations and renovations, we talk it through, study it and make it happen with you.

Lighting · Home automation
Lighting and home automation for your home

Full renovation
A new home built from scratch

Interior design
Interior design


Our work
Kitchen renovation in Castelldefels
We updated this kitchen by replacing the old fittings with new units, an extractor hood, oven and hob, giving the space a more modern and practical feel.
How we work
From first contact to the finished job
We meet
A first visit or meeting to understand your idea and your needs.
We prepare the project
We study the project and prepare the quote.
We get to work
We roll up our sleeves and bring the project to life.
The trust of our clients
Over the years, more than 200 clients have trusted us with their installations and renovations in Castelldefels, Barcelona and the surrounding area.
Every project is different, but they all have something in common: a close, personal service, direct communication and an experienced team to carry it out.


Clients served
Contact us
Ask us for a quote and we will make it happen
With no obligation, message us on WhatsApp or call us. Tell us what you need, what you have in mind or what you want to improve, and we will talk it through to find the best way to make it happen.
We are based in Castelldefels and work across Barcelona and the surrounding area.





