The donation to Lennox Children's Cancer Fund was presented by managing director Jackie Coulthard and will support families across south Essex affected by childhood cancer.
Funds were raised during a charity gala attended by Redrow staff, subcontractors, and partners, featuring auctions, games, live music, and a three-course meal.
The charity provides practical, emotional, and financial support, including help with travel costs, counselling, and emergency grants.
Jackie Coulthard said: "Lennox Children's Cancer Fund provides a lifeline to families during some of the most challenging moments of their lives.
"This donation reflects our deep commitment to the communities we build in - not just through homes, but through meaningful partnerships that create a lasting difference."
Lindsey Bidwell from Lennox Children's Cancer Fund added: "We can only do this because of businesses like Redrow and their suppliers.