The Plantsoen in Leiden is well known for the historical appearance of both the city park (1836) and the houses of the last quarter of the 19th century. The park was originally landscaped on the edge of the city in the place of an old defense belt. At the entrance of the park at the east side the monumental building Plantsoen 1 – 3 is redeveloped in a complex with 6 apartments. The apartments of about 150 m² are provided with all luxury and comfort, such as a private indoor garage, spacious roof terraces and an elevator, while retaining the historical look and value of the building. Redevelopment also applies to sustainability; obtaining Energy label A. Exterior facades, window frames and roof are additionally insulated. The houses are underfloor heated and solar panels are provided on the roof.
The municipal monument at Plantsoen 1 – 3 is divided over three floors and a basement. The property at number 1 was originally a fully detached house, number 3 was part of a block of 3 houses. Both buildings date from 1875 and were connected in 1957 and converted into one large nursing home. In this function change, the original qualities have largely been lost. The round expansion at number 1 dates from 1993.
In the new layout with 6 apartment, the monuments are restored to their former glory by restoration contractor Burgy from Leiden. The façade of the intermediate building is renewed and aligned with the monuments. The existing façade of the round building is finished with a bronze wall cladding, a ‘veil‘ with a leaf motif. This pattern is inspired by the leaf motifs and decorations of the 19th century, which can still be found in various places along the Plantsoen. The round with ‘veil’ becomes a special recognition point in the inner city.
Each apartment has both rooms in the monumental area as well as in the newer parts. The interior of the monumental buildings is provided with appropriate details to bring back the historical character as much as possible. This specific part is provided by Verlaan & Bouwstra architects from Vianen.
On the inside buyers have a lot of freedom of choice; they can choose for an even richer historical finish with wall tension, panelling and en-suite layout or a tight, modern finish and layout; both are possible. Each apartment is unique, has its own layout and its own character. Only the view is the same for all apartments; they all look out over the beautiful monumental city park the Plantsoen at the town canal.
The redevelopment was completed in July 2018.
| Architects | Ronald Knappers |
| Employees | Krijn Tabbers |
| Client(s) | restoration contractor Burgy, Leiden |
The “Villa van Bergenlaan” is located in Rijksdorp, Wassenaar, on the edge of a Natura 2000 protected area.
Situated along a dune ridge, it overlooks the Lentevreugd nature reserve. The villa is modest in expression, partially embedded into the dune, allowing it to become an integral part of the landscape. Energy for the house is generated from sun and air. Because the villa is partly underground, a hybrid structure of concrete and timber has been created.
The materials — including native oak, Fraké wood, concrete, and anodized aluminium — reveal their natural character; nothing is concealed, and in some cases the materials are given a special treatment, such as the wooden slat pattern cast into the concrete. The external façade, one to two storeys high, is clad in timber with concealed window frames.
Characteristic of the villa is the experience of light, space, materiality, and connection with the surrounding landscape. The villa is composed as a sequence of distinct spatial volumes — a modern interpretation of the “Raumplan” principle.
For the residential house Rapenburg 49 in Leiden, a listed national monument, we designed a plan that both enhances sustainability and strengthens the building’s historical and spatial qualities.
The house consists of a front and rear section. The period rooms in the front house have been restored to their former glory — original details and colors were reinstated, and new wall coverings were applied. The family, with two children, lives in the rear house, which they wished to renovate as sustainably as possible.
By implementing a breathable insulation system, a new insulated ground floor, and an air-source heat pump, the rear house has been successfully taken off the gas grid. During the renovation, the layout was improved, and a dormer and several roof windows were added. The connections on the ground floor between the kitchen and living/dining room, and on the upper floor between the bedroom and library, were reinstated. In all interventions, a careful balance between modern technology and historical awareness was sought.
The project was realized in close collaboration with the client, restoration company Burgy, and Erfgoed Leiden.
Photography: Arjen Veldt
The plot Oeverpolder is located in the central part of the Hoornespolder, a 1960s reconstruction area. In recent years, this district has undergone a transformation, where living is more focused on the public space and a clearer separation is made between public and private.
In the design for the new-build location, a U-shaped courtyard building was chosen, which in terms of architecture and grain size connects to the existing buildings. The green structure of the neighborhood is reinforced with the design. The transition between the residential building and the public space has been carefully designed. There are no garages, storage rooms and blind facades in the public space. The U-shaped building contains a total of 52 apartments of 53-88 m2. The building on Hoorneslaan has 4 storeys, the other two sides are 3 storeys high. The houses are all accessible via (widened) galleries in the courtyard, parking is partly in the courtyard and partly on public land, on the street.
The masonry architecture is in line with previous transformations on Hoorneslaan, but also fits in well with the existing modern reconstruction architecture of, for example, the adjacent Pniëlkerk. Due to the sloping boundary of the plot on Hoorneslaan, the building block has been given characteristic staggered façades here. It is an all-round designed building that at the same time has a new and unique character, but also fits well in the neighborhood.
