As a general contractor, INTOS has all the expertise to realise projects from start to finish. With specialised professionals with tight control over planning and budget, we ensure a smooth process. Read here what we can do for you.
More than 30 years of construction and finishing experience.
INTOS builds projects with future generations in mind.
Certified for the highest standard.
Engagement that goes beyond the brief.
At INTOS, we go one step further. Not only do we take care of the entire finishing process, we also provide the complete customised interior.
Thanks to the combination of construction expertise and interior design knowledge, we have everything we need to make all parts of a project fit together smoothly.
INTOS Maincontracting provides turnkey customisation that perfectly matches your workflow, with safe and flexible top-quality products for laboratories, airports, offices, hospitality, retail and the medical sector.
INTOS Maincontracting advises you at every step towards an optimal completion project. With our expertise, we realise safe, efficient and flexible tailor-made solutions from A to Z.











INTOS guarantees solutions according to recognised standards.
See below how we realise ambitions together with our clients. From hospitable hotel and restaurant experiences to inspiring workplaces: As a general contractor, INTOS realises complete projects and takes care of everything from concept to completion.
From concept to completion: we unburden you. Our strength? We combine architectural expertise with a keen eye for functionality and technical feasibility.
With a permanent team of project managers, work planners and implementers, we form the stable core. Around this, we work with a carefully selected network of specialised partners. This combination makes us agile: we switch quickly, deliver tailor-made solutions and are not tied to cumbersome contractor structures.
Not by ourselves, but together. We join forces with leading architectural firms that translate your vision into a strong and feasible design. This creates a solid basis for a successful project.
Our integrated approach means we have all disciplines under one roof. No endless mail exchanges between different parties, no waiting for approvals from external contractors.
Our permanent team of project managers and work planners makes immediate decisions and moves quickly. Because we oversee and coordinate all phases, we keep a constant grip on progress. We identify delays early on and proactively prevent budget overruns.
Complexity is our business: Laboratories with strict safety requirements. Airports where 24/7 transit must be guaranteed. Hospitals where downtime is not an option. These are not exceptions for us, they are our everyday work.
With years of experience in high-tech and critical environments, we know how to deliver quality, even when the pressure is on. Tight deadlines, limited construction windows, strict regulations, we keep shifting gears.
Where Design & Build is all about collaboration from design onwards, Turnkey means INTOS carries out your project from start to finish. Including demolition, technical finishing and customised interiors. Our permanent teams coordinate everything under one roof, with a single point of contact. Complete unburdening.
Turnkey means that we take care of the entire project from A to Z - from shell to turnkey. As a result, there is a single point of contact and we coordinate all disciplines: from finishing and installation work to customised furniture and specialist solutions.
We have over 30 years of experience in projects in critical environments such as airports, hospitals and laboratories, where downtime is not an option. Our strength lies in flexibility, phasing and careful planning. We coordinate closely with your operation, work outside peak times where necessary and ensure minimal inconvenience. Safety and continuity are paramount.
With INTOS, you get not just a builder but a partner who oversees the entire process. We combine advice with project efficiency, controlled and what goes according to plan.
Actually as early as possible, ideally as early as the first idea. It is precisely in the initial phase that we can make the most difference by helping to think about feasibility, budget optimisation and smart execution. But even if the project is already underway and there is a need for additional expertise, overview or independent advice, we can step in.
Whether it is a refurbishment, adaptation or complex design: we provide the connection between requirements, the end user and the executing parties so that everyone is on the same page.
Our project managers think along proactively, not just reactively. We not only monitor planning and budget but actively advise on sustainability, value engineering, prefabricated solutions and process optimisation.
We understand that every project is unique and look beyond drawings: we think about how users will soon work, what logistical challenges there are and how we can make the end result even better.
Our project managers are involved from the kick-off and ensure clear communication between client, end user, architect, consultants and contractors.
We speak the language of all parties - from technical specifications to user requirements and translate that into concrete agreements and actions. By steering proactively, identifying potential bottlenecks early on and keeping short lines of communication, we prevent miscommunication and delays.
We have already seen the result several times: a project that everyone supports and that runs smoothly.
Whether you are looking for help coordinating subcontractors or need a turnkey solution, INTOS is there for you. We realise projects from A to Z, with craftsmanship and attention to detail.
A project does not stop at completion. To keep an interior in optimal condition for a long time, maintenance is crucial.
For example, INTOS maintains 900 workstations four times a year at Schiphol and every month the custom furniture, pantries, sofas, call boxes and restaurants at Randstad.
At INTOS, we realise complete interior design projects with an eye for quality, circularity and sustainable impact, anchored in our ESG policy.
We combine local production, reusable materials and smart processes to create interiors that are long-lasting, flexible and responsible. From circular BAS panels made from local grass to recycled materials, we build for future generations.
Other questions?
As main contractor, INTOS ensures a seamless connection between customised interior and finishing.
Architects appreciate our precision and the ease with which custom-made furniture, ceilings and floors form a whole. Coordinating everything under one direction creates a consistent end result in which design and execution reinforce each other.
In short: INTOS makes the difference through total alignment, from concept to realisation. And that is visible in every project.
We focus on integral projects, where finishing is often an important part in combination with custom-made furniture. We always combine our finishing projects with at least one of our specialisms within INTOS, such as lab furnishing, medical environments, airport interiors or office environments. In this way, we keep the quality, planning and coherence of the project under optimum control.
Yes. INTOS can take on projects in a fully integrated manner. For electrical and mechanical installations, we cooperate with permanent, specialised installation partners. We remain the central point of contact and ensure coordination between construction, interior and installations, so that everything fits together seamlessly.
Other questions?
In this bird's-eye view video, you get a behind-the-scenes look at our Haarlem workshop and offices. You will see how our craftsmen, advanced machinery and smart processes come together to bring interiors for labs, hospitals, offices and airports to life.
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