Valderra

Horizons and duality: water, territory, city, and culture.

Laderas is a premium, ultra-low-density residential destination nestled within the mountain ecosystems of Arteaga, Coahuila. Designed by HLA, the project redefines luxury mountain living by shifting the focus from traditional real estate footprint to deep environmental stewardship and ecological integration.

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Spanning 72.58 hectares of topographically complex terrain, the master plan is explicitly shaped by the site’s natural conditions. Rather than imposing rigid urban geometry, the layout embraces and responds to the landscape's transitional ecosystems—which shift from local agricultural apple orchards to dense, native pine-oak forests.

The core architectural and landscape vision centers on two critical pillars: Passive Hydrology and Wildfire Resilience. By replacing conventional concrete storm pipes with a historic yet modernized network of open-air acequias and retention lakes, the project manages water as an asset rather than a waste product, completely mitigating downstream flood risks while nourishing the local water table. Simultaneously, facing the inherent risks of its forested borders, Laderas integrates infrastructural fire protection directly into its public program. Perimeter hiking trails double as active mechanical firebreaks, and private lots are governed by strict, innovative landscaping guidelines designed to break the horizontal and vertical continuity of forest fires.

Ultimately, Laderas stands as a benchmark for Low Impact Development (LID) in Mexico—a project where infrastructure becomes landscape, and landscape becomes the primary shield for environmental preservation, productivity, and community safety.

Keywords

Innovation / Water Efficiency / Wildfire Resilience / Productive Landscape

Scope

Master Plan / Urban Design / Landscape Architecture

Location

Arteaga, Coahuila, Mexico

Details

Size: 72.58 ha
Year: 2025

Innovative elements in the landscape

Interconnected Open Blue System

Instead of confining stormwater runoff to traditional underground concrete pipes or channels, the design utilizes open-air acequias (stone-lined canals), rain gardens, and pre-existing dams that flow into orthogonal entrance lakes. These water bodies function passively as retention ponds and regulating basins for direct aquifer infiltration, mitigating downstream flooding risks.

Transitional Landscaping and Productive Orchards

The project dissolves the boundary between wilderness and the built environment. It integrates the native pine-oak forest reserve with the region's agricultural heritage by preserving and establishing demonstration apple orchards open to residents, complemented by a "Harvest Tour" to activate the landscape recreationally and culturally.

Firebreaks as Multimodal Infrastructure

The wildfire protection belt is not conceived as a barren, dead strip of land; the development's perimeter walkways and trails are geometrically designed to operate as active mechanical firebreaks (with minimum widths of 3 meters cleared of woody fuel and specific sections featuring soil-cement gutters to mitigate erosion on critical slopes greater than 25%).

Dynamic Buffer Zones and Inverse Density

At the private regulatory level, a highly restrictive Building Footprint Coefficient (COS) of only 12% is applied to structures. The landscape within each lot is designed along a gradient where the density, height, and biodiversity of vegetation gradually increase as they move away from the house, breaking the vertical and horizontal continuity of forest fuel to slow the spread of potential wildfires.

Permeable Materials with Low Thermal Impact

Traditional asphalt and pavements are replaced with borderless soil-cement solutions, local stone paving set on sand beds, and secondary loose-gravel roads. This maximizes ground permeability, respects the mountain's natural runoff, and radically reduces the heat island effect.

Process

The project’s methodology was driven by an iterative site-analysis framework that prioritized landscape intelligence over conventional urban planning. The design team began with an extensive geographical and forestry survey to map the site's complex terrain, existing runoff corridors, and natural transition zones. By interpreting the mountain's organic data, the layout was dynamically sculpted to align roads and lot boundaries with the land's natural form, completely avoiding the environmental disruption of a rigid grid.

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This comprehensive research phase allowed the team to integrate strict civil engineering parameters—such as hydrological modeling and wildfire risk assessments—directly into the master plan's zoning laws and architectural restrictions. Through this collaborative framework, the technical requirements of infrastructure and safety were successfully synthesized into a fluid, multi-layered design strategy, setting a new benchmark for low-impact mountain developments.