#00004Affordable housing solutions
Housing prices are skyrocketing, making it difficult for many to find affordable places to live. We need creative solutions to this crisis.
Leo Martinez
Software engineer, civic-tech volunteer
Mexico City, MX·Joined Jul 2025
- Trust score
- 35
- Endorsements
- 3
- Contributions
- 7
01
About
Backend engineer by day, OpenStreetMap mapper by night. Mostly here to build tools and tighten data pipelines for the issues this community surfaces.
02
Credentials
OpenStreetMap mapper, HOT volunteer
open data500+ HOT tasks completed, regular validator for Mexican mapping projects.
1 endorsement
Senior backend engineer (Go, Postgres, GIS)
software engineering7 years building geospatial data pipelines, last 3 in civic tech.
2 endorsements
03
1 issue submitted
04
6 solutions proposed
#00010Community composting hubs in every neighborhood
Set up shared composting stations in parks, community gardens, or parking lots. Residents drop off food scraps and yard waste, and the finished compost is available free to local gardeners. Cities like Portland and Copenhagen have proven this model works at scale.
#00016Real-time tracking and open data for transit
Require transit agencies to publish real-time vehicle positions using the GTFS-realtime standard. This enables accurate arrival predictions in apps like Google Maps and Transit, and lets the community build tools to hold agencies accountable for on-time performance.
#00036Community solar programs for renters and low-income households
Build shared solar arrays on public land or rooftops and allow residents to subscribe for a share of the energy produced. Subscribers get credits on their electricity bills without needing to own property or install panels. Programs in Minnesota and Colorado have enrolled thousands of low-income households.
#00057Binding Whole-Life Carbon Limits for New Construction
Mandate maximum lifecycle carbon budgets per square meter for all new construction, declining over time. This forces architects and developers to optimize material choices from the design phase rather than treating embodied carbon as an afterthought. France's RE2020 regulation, in force since 2022, sets progressively tightening embodied carbon thresholds (−15% in 2024, −25% in 2027, −30 to −40% in 2030) that have already shifted the market toward timber, low-carbon concrete, and bio-based insulation. Denmark's BR18 set a limit of 12 kg CO2e/m2/year in 2023, tightened to 7.1 in 2025.
Switzerlandnational
#00070Restore landscape water retention Plan
Slow down and infiltrate water at the landscape scale using hedgerows, retention ponds, swales, restored wetlands, and beaver-led re-wetting. The goal is to recharge small aquifers and keep soils moist longer between rainfall events, addressing the structural water shortage that no forestry technique alone can fix.
#00063Diversified Negative Emissions Portfolio Strategy
Instead of betting on a single carbon removal technology, build a portfolio combining CCS at point sources, direct air capture procurement contracts, carbon mineralization in construction, and potentially enhanced weathering or biochar. Set intermediate milestones requiring each technology to demonstrate progress, with fallback provisions to scale alternatives if one fails. Copenhagen's collapse after relying solely on CCS at one waste-to-energy facility is the definitive argument for diversification. The Swiss federal Climate and Innovation Act provides CHF 200 million per year (2025–2030) that cities can leverage for portfolio development.
Basel-Stadt, Switzerlandcity