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France has been experiencing a surge in housing prices for more than twenty years, resulting in an affordability crisis in some territories. This is particularly the case in the Lyon urban area, where housing prices have tripled since 2000. Given this situation, local governments are trying to develop affordable home ownership policies, such as Plan 3A (Accession A prix Abordable: Affordable Home Ownership Program), which the Metropolis of Lyon ran between 2013 and 2020. This policy helped two thousand households purchase a home at 20 percent below market value and obtain a housing benefit. This solvency-enhancing policy was fairly consensual, but it was not without its ambiguities: as a noncoercive measure, Plan 3A supported the housing market by enrolling first-time home buyers, but it did not allow the Metropolis of Lyon to influence market prices or urban segregation patterns. Finally, Plan 3A questions the local government’s leeway on affordable housing.