Nota Behoud Dorpsaanzicht en Openbare Ruimte 2020 – Oostzaan Spatial Quality Guidelines
The Nota Behoud Dorpsaanzicht en Openbare Ruimte, published in November 2020 by the Gemeente Oostzaan, establishes the regulatory framework for maintaining and strengthening the spatial identity of the municipality. This document serves as a transition from the detailed architectural requirements of the Welstandsnota Oostzaan 2004 toward an integrated landscape-led approach under the upcoming Omgevingswet (Environment and Planning Act). It functions as the official policy for the external appearance of buildings, providing the municipal advisory committee and developers with a basis for evaluating building plans against spatial core values rather than rigid stylistic rules.
The scope of the document encompasses the entire territory of Oostzaan, with a specific emphasis on the historical ribbon developments (lintbebouwing) and their relationship with the surrounding peat meadow landscape (veenweidelandschap). It identifies specific areas of high regulatory importance, including De Haal, De Heul, Noordeinde, Kerkbuurt, Kerkstraat, and Zuideinde. The document is structured into four primary components: a historical analysis of the village's development since the 11th century, a classification of six architectural archetypes derived from local tradition, a definition of spatial core values such as sightlines and scale, and a set of eleven concrete building principles.
By shifting the focus from individual building details to the broader context of the village in the landscape, the municipality aims to foster an open dialogue between planners and initiators. This framework prioritizes the preservation of characteristic elements like roadside ditches (wegsloten), historical bridges, and the 'fanning out' (uitwaaieren) of building density toward the green open spaces. The guidelines below summarize the essential criteria for new developments and renovations within the municipal boundaries.
Architectural Archetypes of Oostzaan
The document identifies six architectural archetypes that characterize the built environment of Oostzaan. These models serve as an inspiration for new designs rather than a rigid blueprint for replication.
- #1: De onvolledige stolp: The most characteristic local farm type, featuring a rectangular footprint and a truncated pyramid roof, often found along De Haal and De Heul.
- #2: De hooihuisboerderij: A three-part layout typical of the Waterland region, consisting of a living area, a stable, and a higher hay-stack structure (kapberg).
- #3: De aangekapte schuur: Barn-like structures used for storage or housing, often featuring white water-edges (waterlijsten) to accentuate the roofline.
- #4: De mansarde: A variant of the simple house with a mansard roof, providing additional space on the first floor without adding a full story.
- #5: Het eenvoudige woonhuis: Small-scale gable-roof houses characterized by the 3-4-5-steek facade ratio and a contrast between brick frontages and wooden side walls.
- #6: Het dorpse herenhuis: Symmetrical, single-story mansions standing solitary on large green plots, often featuring Renaissance-style ornaments.
Spatial Core Values (Kernwaarden)
Future developments must respect the spatial core values that define the village's identity. These values are categorized by their visibility at street level and their presence in the landscape map.
- Sightlines (Doorkijkjes): Preservation of views from the historic ribbon roads toward the open veenweidelandschap.
- Green and Water Presence: Maintenance of front gardens to prevent 'stoning' (verstening) and the protection of characteristic wegsloten (roadside ditches).
- Small-scale Character: Buildings in the ribbons are generally restricted to two layers, with the second layer almost always contained within the roof structure.
- Fanning Out (Uitwaaieren): Building density must decrease as the lot approaches the open landscape, creating a soft transition between the village and nature.
General and Ribbon Building Principles
Chapter 4 defines eleven principles for spatial development, divided between general rules for all of Oostzaan and specific requirements for the ribbon developments.
- Principle 2: When a view to the landscape is possible from the street, this sightline must be the leading factor in site layout, including fencing and planting.
- Principle 6: Building along the ribbons must remain small-scale, consisting of a maximum of two stories.
- Principle 7: Higher volumes are only permitted if positioned modestly behind a two-story main building, following the logic of the hooihuisboerderij archetype.
- Principle 11: Roadside ditches (wegsloten) may not be filled, and characteristic bridges must be preserved to maintain the historical water structure.
Frequently Asked Questions
What is the maximum building height allowed in the historic ribbons of Oostzaan?
According to Principle 6, buildings in the ribbon are limited to a maximum of two stories to preserve the small-scale village character.
Can I build a higher structure behind my main house?
Yes, Principle 7 allows for higher volumes if they are situated modestly behind a two-story main building, modeled after the hooihuisboerderij or onvolledige stolp archetypes.
Are there specific rules for front gardens and fencing?
Yes, Principle 8 and 9 mandate that front yards must remain green with space for at least one tree, and Principle 2 states that fencing must not block sightlines to the surrounding landscape.
What architectural style does the municipality prefer?
The municipality does not enforce a single style but encourages designs inspired by the six local archetypes, such as the onvolledige stolp or the mansarde.
Is the 2004 Welstandsnota still in effect?
The 2020 Nota replaces the previous version. It acts as the formal policy for building appearance until the Omgevingswet is fully implemented.
What is the '3-4-5-steek' mentioned in the document?
This refers to a traditional architectural ratio for the gables of simple houses in the Zaanstreek region, as described in Archetype 5.
