
Services · Turnkey construction, development & moreSeveral pillars, one standard.
Organisationally separate, under one infrastructure. Every service follows the same quality and process standard. None is a by-product.
What are you planning?
Three routes to the right service. Choose your entry point, we sort out the rest in conversation.
What we specialise in.

Development
DeveloperFrom site to viable concept: location, use, feasibility and permitting. As a developer who later answers for the result.
- Location & potential analysis
- Use & development concept
- Feasibility & economics
- Permitting & viability
We assess sites for potential, develop usage concepts and secure feasibility and permitting. The result is a solid basis before any building starts, and a developer who later answers for delivery.

Fixed-price contract as standard.
Our preferred contract model creates cost certainty and clear responsibility. We are willing to carry risk and control it through structure, engineering and process.
Cost certainty
One binding price instead of open items.
Clear responsibility
One point of contact for the entire building.
Risk, managed
Deliberately taken on, controlled through structure and engineering.
Quality management
Cross-trade sign-offs, clear documentation, structured handovers.
More than just building.
We buy
We assess plots and properties with potential simply and discreetly. If it fits, we acquire directly.
We sell your property
Inwesta's own projects and our clients' properties, professionally marketed and cleanly handled.
We advise you
Grounded advice at every stage, including funding. We keep an eye on current funding programmes, for investors and private projects alike.
We manage your properties
In preparationProfessional management of assets and residential complexes, to the same quality and process standard.
The questions that really matter.
Honest answers to what builders and owners ask us first.
That depends on building type, location and specification, which is why we do not quote blanket figures. As a rule we take on residential projects from around 500,000 euros and commercial and industrial projects from around 5 million euros. After the first meeting you receive a sound estimate, and the lump-sum contract fixes a binding price. For context: completed Inwesta projects such as the Mehrfamilienhaus Aldenhoven, with 10 units and around 870 m² of living space, sit in this range.
Mainly a question of permits and scope. In the first meeting you get a realistic time frame, the contract sets binding milestones, and our site management keeps schedule and costs under continuous control during construction. Planning follows the HOAI service phases, so permitting, tendering and execution interlock instead of holding each other up.
Change requests are taken up immediately, assessed technically and made transparent with their cost and schedule impact before anything is executed. You decide on a clear basis. There are no unagreed extras with us. The basis is complete documentation: every change is recorded in writing, with its price and schedule impact, before anything happens on site.
We are. As general contractor we carry overall responsibility: one contract, one contact, cross-trade acceptances, complete documentation. Warranty is part of our promise, not a matter for negotiation. That holds from the first trade to handover of the keys: coordinating subcontractors, quality checks on site and the acceptances sit with us, not with you.
Because a price that starts too low is recovered later through extras, time or quality. We calculate realistically and then stand by that price. Calculated over the full construction period, that is the better deal. Our calculation rests on real trade prices and a clearly defined specification that is fixed in the lump-sum contract.
By the way we work: deliberately few, large projects instead of many parallel sites, a licence under section 34c GewO, clear contract models and payments tied to construction progress. You pay for work that is done and documented. References such as the Mehrfamilienhaus Aldenhoven with 10 units and the Wohnresidenz Aldenhoven with 13 condominiums show this way of working in the built result.
Not a whole project? No problem.
You don't need a complete project, just a single trade? We place vetted subcontractors at the best conditions, fast, reliable and without compromising on quality.

Let's talk about your project.
Tell us the scope, the location and the framework. You'll get a grounded, honest assessment and a clear next step.
Typically a response within 24 hours.
Not ready yet?
