Chimney removal is not “simple demolition” — it is a structural intervention. Without a structural calculation and a temporary support strategy, the risk is real: instability, cracking, neighbour damage, and (in the Netherlands) enforcement or a stop-work order.
We calculate the steel support system (beam or frame) and verify bearings, load transfer, and the capacity of the existing structure. The objective is clear: predictable behaviour in the final condition and clear evidence for municipal review.
The critical risk window is demolition and installation. We define the sequence, propping locations, and temporary supports so the permanent load path is never “interrupted” in an uncontrolled way.
Where required, we deliver a submission package for the Omgevingsloket route: structured drawings, calculation memo, and a concise explanation that aligns with municipal assessment practice.
In the Netherlands, structural safety during (and after) modifications is assessed under the Besluit bouwwerken leefomgeving (Bbl). Even if a project is “minor” visually, a change in load path can trigger a requirement for structural substantiation, and in some cases a permit or formal notification route under the Omgevingswet.
Practical rule: “no exterior change” does not automatically mean “no structural file”. Municipal inspectors typically verify that the steel support and temporary propping match the engineer’s drawings.
Before demolition, confirm whether the chimney still serves a fireplace, stove, boiler, or ventilation flue. Also be aware that older flue liners may include materials that require controlled removal. If there is any doubt, we advise an inventory check before work starts.
In Amsterdam, chimney removals are frequently reviewed conservatively where there is party-wall risk, protected streetscapes, or older building stock with slender masonry and timber floors. A clear, well-structured structural file reduces delays and makes it easier for building control to verify the work on site.
It depends on whether the work is considered a structural change and on the local rules and context (including heritage constraints). In practice, a structural substantiation is commonly required because the municipality must be able to verify safety during and after demolition.
Typically with a steel support beam or frame beneath the section that remains, with adequate bearing length on load-bearing walls or columns. The exact member size and bearing details follow from the calculation and the existing building configuration.
During demolition and steel installation, the permanent load path is temporarily interrupted. The propping plan defines supports and sequencing to prevent cracking or collapse.
Where chimneys or flues sit on a party wall or near the property line, shared ownership and neighbour law may apply. Consent and clear agreements reduce claims and delays; technically, you must demonstrate that the neighbour’s stability is not reduced.
Possibly, yes. Building control may inspect on site to verify that the steel support and propping match the engineer’s drawings and calculation.
Obtain the structural calculation and temporary propping plan before demolition starts. This prevents damage, delays, and disputes during inspection.
