Maincontracting services
From concept to completion, we provide full support. Our strength? Combining construction expertise with a keen eye for functionality and technical feasibility.
As main contractor, INTOS brings all the expertise needed to deliver projects from start to finish. With specialized professionals and tight control over schedules and budgets, we ensure a seamless process. See how INTOS can make a difference in your project.
With over 30 years of experience in construction and fit-out.
INTOS builds projects with future generations in mind.
Certified for the highest standard.
Our commitment goes beyond the brief.
We not only take full responsibility for the entire fit-out process, we also deliver fully bespoke interior solutions.
With our combination of architectural expertise and interior construction know-how, we have everything in-house to ensure all elements of a project align seamlessly.
INTOS Maincontracting delivers turnkey, bespoke solutions that align perfectly with your workflow, featuring safe and flexible, high-quality products for laboratories, airports, offices, hospitality, retail and the healthcare sector.
INTOS Maincontracting guides you through every step toward an optimal fit-out project. With our expertise, we deliver safe, efficient and flexible tailor-made solutions from start to finish.
INTOS guarantees solutions that meet recognized standards.
See below how we realise their ambitions together with our clients. From hospitable hotel and restaurant experiences to inspiring workplaces, hospitals and laboratories: as a general contractor, INTOS realises complete projects and takes care of everything from concept to completion.
From concept to completion, we provide full support. Our strength? Combining construction expertise with a keen eye for functionality and technical feasibility.
With a dedicated team of project managers, planners, and site supervisors, we form a stable core. Around this core, we collaborate with a carefully selected network of specialized partners. This combination makes us agile: we respond quickly, deliver tailor-made solutions, and are not constrained by cumbersome contractor structures.
We join forces with leading architectural firms to translate your vision into a strong and feasible design. This creates a solid foundation for a successful project.
Thanks to our integrated approach, we bring all disciplines under one roof. No endless email exchanges between different parties, no waiting for approvals from external contractors.
Our dedicated team of project managers and planners makes immediate decisions and acts quickly. By overseeing and coordinating all phases, we maintain constant control over progress. This allows us to identify delays early and proactively prevent budget overruns.
Complexity is our specialty: laboratories with strict safety requirements, airports where 24/7 operations must be maintained, hospitals where downtime is not an option. These are not exceptions for us—they are part of our daily work.
With years of experience in high-tech and critical environments, we know how to deliver quality even under pressure. Tight deadlines, limited construction windows, strict regulations: we keep things moving.
While Design & Build focuses on collaboration from the design stage, Turnkey means that INTOS manages your project from start to finish. This includes demolition, technical fit-out and bespoke interiors. Our dedicated teams coordinate everything under one roof, with a single point of contact: providing you complete peace of mind.
Turnkey means that we take full responsibility for the entire project from A to Z—from shell construction to ready-to-use completion. This provides a single point of contact, as we coordinate all disciplines: from fit-out and installation work to bespoke furniture and specialized solutions.
We have over 30 years of experience with projects in critical environments such as airports, hospitals, and laboratories, where downtime is not an option. Our strength lies in flexibility, phased execution, and meticulous planning. We coordinate closely with your operations, work outside peak hours when necessary, and ensure minimal disruption. Safety and continuity are always our top priorities.
At INTOS, we are your partner overseeing the entire process. We combine advisory expertise with project efficiency, ensuring everything is controlled and proceeds according to plan.
Ideally, as early as possible—preferably from the very first idea. Especially in the initial phase, we can make the biggest impact by advising on feasibility, budget optimization, and smart execution. But even if the project is already underway and additional expertise, oversight, or independent advice is needed, 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 proactively, not just reactively. We don’t just monitor schedules and budgets, we actively advise on sustainability, value engineering, prefab solutions, and process optimization.
We understand that every project is unique and look beyond the drawings: we consider how users will work, what logistical challenges may arise, and how to make the final result even better.
Our project managers are involved from the kick-off and ensure clear communication between the client, end users, architects, consultants, and contractors.
We speak the language of all parties—from technical specifications to user requirements—and translate it into concrete agreements and actions. By managing proactively, identifying potential bottlenecks early, and keeping communication lines short, we prevent miscommunication and delays.
We have seen the result multiple times: a project that everyone supports and that runs smoothly.
Whether you need assistance coordinating subcontractors or require a turnkey solution, INTOS is ready to support you. We deliver projects from A to Z, with craftsmanship and attention to detail.
A project isn’t finished at handover. Proper maintenance is essential to keep your interior in top condition for years to come.
INTOS maintains 900 workstations quarterly and provides monthly care for bespoke furniture, pantries, seating areas, phone booths, and restaurants at Schiphol and every month the custom furniture, pantries, sofas, call boxes and restaurants at Randstad.
Together, we create responsible interiors; safe, healthy, circular and climate-positive.
At INTOS, we deliver complete interior projects with a focus on 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. INTOS builds for future generations.
Other questions?
As the main contractor, INTOS creates a seamless connection between custom interiors and the fit-out process.
Architects appreciate our precision and the seamless integration of custom furniture, ceilings, and floors. Coordinating everything under one management ensures a consistent outcome where design and execution perfectly align.
In short: INTOS makes the difference through total alignment, from concept to realisation. And that is visible in every project.
Our focus is on integrated projects, where fit-out often goes hand in hand with bespoke furniture. Every fit-out is paired with at least one of INTOS’s specialties—whether lab interiors, medical facilities, airport environments, or office spaces—ensuring full control over quality, timelines, and overall project cohesion.
INTOS can take full ownership of integrated projects. For electrical and mechanical systems, we work with reliable specialist partners, while we stay the main point of contact—coordinating construction, interiors, and installations for seamless results.
Other questions?
Take a behind-the-scenes look at our production floor and offices in Haarlem through this aerial video. Watch how our expert craftsmen, advanced equipment and efficient processes combine to create interiors for labs, hospitals, offices, and airports.
Take a look with us!
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