Joke van Hengstum was trained as an interior architect at the Rotterdam Academy of Art.
She is a member of the BNI (Association of Dutch Interior Architects).

Her work mainly consists of finishing, restoring and constructing interiors for new and existent buildings both for corporate and for private clients. She is a specialist in the area of functionality analysis: its use within the limits of architecture is the most important challenge. She prefers to achieve optimal results in cooperation with other disciplines and considers any restrictions within the commission as positive incentives.
Both natural lighting and artificial lighting determine the specific quality of the commission.

As an advocate of interior architecture being an important element within the building process, she has been active as both secretary and chair of the BNI.
From 2008-2014 she served as president of ECIA (European Council of Interior Architects).

An office space as lower floor of an apartment complex. A triangular plan, with chiefly glass facades. An open parking area below and a flat roof. Considerable attention has been paid to the installation of heating and ventilation. As it was impossible to install them at the outside of the facades or on the roof, appliances have been installed within the available plan.
Client wished to realize small units for rent, conference rooms and a cafeteria.
Because of the built-in spaces special appliances have been designed: a translucent ceiling with decorations.

Client bought the apartment from plan, allowing adaptations of the architectural construction. Entry of natural light has been established in two different places, like in the entrance hall. Lay-out of the plan has been adapted after careful consideration.
Central heating and ventilation have been installed behind the walls of the red cupboard. The bathroom has been arranged and equipped according to client’s wishes.

An office unit in a formerly used building that has been refurbished. The firm trades in metal castings made according to clients’ specifications. These heavy and often sharp-edged metal shapes are displayed on a table during business meetings. Special specimens are shown in a cupboard. Cupboard and table are designed fitting in with the shape of these items. The table top has been covered with a heavy industrial flooring product and is immune to damage. The cupboard contains shelves of “pig grids”(as in pigsties) which are capable of carrying the weight of the castings.

The “Woonnotaris”, Huybregts, Vlijmen
A previously realised interior has been adapted to present-day standards. A special colour scheme has been used. The pantry has been enlarged and renewed. A wear-resistant surfaced staircase has been constructed. The protective strips (stairnosing) have been matched with the covering in a subtle way.

Leather staircase protective strips (stairnosing) for a house, ‘s Hertogenbosch, 1997
An awkwardly shaped staircase asked for a special design. Carpeting the staircase was difficult because of anti-slip and chip-proof standards having to be met. A 2009 photograph shows this detail is still in good condition. The protective strip is made of “sole leather”.

Restoration of a national monument in the Walloon provinces (Belgium)
The farmhouse of the Tavigny castle is currently being restored for later use as apartment, exhibition room and studio. All this in close cooperation with an architect’s firm in Liège.

In cooperation with LITE (natural and artificial lighting consultants, Amsterdam) several lighting plans have been designed. Luminars have been developed for specific situations.

Chipshol Park
The Nederlandsche Bank, Amsterdam, conference room
Notary office, ‘s Hertogenbosch, entrance hall notary office
small luminar in series for high voltage halogen lamp