Who Are We?
Experts across Belgium (Flanders, Wallonia, and Brussels)
Specialized Firm
Who Are We?
EXXPERT (with two Xs) is a specialized firm in Provisional Acceptance Inspections and the resolution of construction defects. As one of the most experienced and recognized firms in Belgium in this field, EXXPERT brings together three passionate, trilingual construction experts.
Our team combines strong technical expertise with a rigorous and client-focused approach, ensuring accurate, transparent, and legally compliant inspections.
We also carry out technical building inspections and building pathology assessments, helping homeowners, property managers, developers, and co-owned properties effectively resolve construction-related issues.
Where other experts stop due to limited experience, EXXPERT goes further with comprehensive support. Based in Brussels, we assist private property owners and co-owned properties with the inspection, documentation, and follow-up of construction defects and non-compliance issues.
Our team consists of three experienced construction experts, each with a strong technical background and trilingual expertise (FR – NL – EN). This allows us to operate effectively across Belgium's different regions and regulatory environments.
When others stop at complex cases, EXXPERT continues the investigation and provides complete support, from the initial findings through to legal follow-up when required. We work with a trusted network of court-appointed experts, bailiffs, and specialized partners.
Our commitment does not end with the Provisional Acceptance Inspection. We continue supporting our clients for up to one year afterwards, monitoring repairs, outstanding items, and potential disputes. For cases requiring legal proceedings, we collaborate with RawlingsGiles, a Brussels-based law firm.
EXXPERT was founded by construction expert Karl Gheysen.
With many years of experience as a project manager and property developer, Karl developed a strong passion for Provisional Acceptance Inspections and helping homeowners and co-owned properties resolve construction defects. Thanks to his in-depth knowledge of the Breyne Law and his recognized expertise, he is widely respected as a specialist, regularly consulted, and capable of handling even the most technically and legally complex cases.
Team of Experts
Over the past five years, our team of experts has grown into one of the leading operational expert teams in Belgium, active across Flanders, Wallonia, and Brussels.
Over the past few years, EXXPERT has become a recognized provider of operational building expertise in Brussels, with a strong specialization in Provisional Acceptance Inspections and construction-related disputes.
Our approach is built on:
- experienced experts with extensive hands-on knowledge;
- rigorous and structured case management;
- in-depth understanding of local procedures and practices;
- independent, objective, and pragmatic expertise.
As a result, we are regularly consulted on technically and legally sensitive cases. By working directly with EXXPERT, you avoid delays and unnecessary costs associated with multiple interventions.
Our team operates throughout Belgium. In Brussels, we have a dedicated trilingual team (French, Dutch, and English) specialized in the technical, legal, and administrative specificities of the Brussels-Capital Region.
