Middelburg Sint Laurens Sustainable Masterplan
Sustainable masterplan for historic neighbourhood integrating water and energy systems
Sint Laurens is a village in Zeeland, Netherlands, built atop an ancient creek ridge that gives it access to a freshwater lens unavailable to surrounding saline areas. Except collaborated with the municipality of Middelburg to design an expansion plan using the Orchid City framework. The plan integrates water management, renewable energy, food production, and ecological enhancement across three interwoven housing clusters. It addresses the village's groundwater challenges, soil shrinkage, and sustainability ambitions simultaneously.
The Problem
The Netherlands faces pressure to expand its housing stock while meeting sustainability targets. Sint Laurens has specific challenges: soil shrinkage, water management constraints, and the high salinity of surrounding groundwater that makes agriculture difficult across most of Zeeland. The village's freshwater lens, formed by its position on a raised creek ridge, is a rare asset that required protection rather than depletion. The municipality needed an expansion plan that improved rather than degraded the systemic sustainability of the entire town.Process
Orchid City framework application
Except applied the Orchid City sustainable city model to calculate a diverse program of housing typologies and neighborhood amenities. The model ensured inclusive community design alongside sustainable production of energy, vegetables, fruits, and nuts for all Sint Laurens residents.Freshwater lens protection and enhancement
The design improves the village's sponge capacity through wadis and rainwater buffers, ensuring climate-adaptive freshwater availability for local food production. The freshwater lens underpins the integration of orchards, food forests, and arable farming across the site.Closed metabolic system
PVT panels and a biomass reactor supply renewable energy and heat. Bioreactors and helophyte filters close wastewater flows. Compost and nutrients cycle through local agriculture, actively improving soil quality over time.Outcomes
- Housing clusters
- 3
- Interwoven with productive landscape
- Resource flows
- Closed loops
- Energy, water, food, and waste closed on-site
- Soil quality
- Net-positive
- Ecosystem improvement over time
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