Opportunity Demand: Increasing training and capacity building in sustainable materials use can stimulate demand in affordable housing construction. Bring newer techniques and materials to where the affordable housing sector accesses housing information. Opportunity Availability: Create the proper incentives for small-scale suppliers to provide sustainable building materials. Professional support services can stimulate sustainable construction. Put into place financing mechanisms that support the availability of new materials. Opportunity Commitment: Partnerships can bring better housing microfinance and micro-mortgage products to open up the housing finance market to the BOP Secure land tenure can enable access legal protection and financial services Governments can facilitate the introduction of new affordable products by incentivizing their use.