Les Petites Pierres is a French, nonprofit crowdfunding platform dedicated to supporting housing solidarity and improving access to decent accommodation. It connects associations seeking funding with donors who want to help tackle poor housing and social exclusion. Through the platform, associations can present projects, run online fundraising campaigns and share updates with supporters. Projects focus on initiatives such as renovating homes, creating inclusive or shared housing, providing shelter, improving living conditions, supporting autonomy and addressing energy poverty.

A distinctive feature is that Les Petites Pierres doubles donations made to eligible campaigns. The platform is free for associations and charges no commission, and it offers project leaders personalised support throughout their fundraising efforts. Projects are reviewed by a validation committee before being presented. Donors can browse campaigns, contribute online and access information about tax deductions; the site states that donations may be deductible at 75%, with a tax receipt provided. By bringing associations and donors together, Les Petites Pierres helps finance practical, community-led projects that build more dignified housing and stronger social connections.