Private financing available. The largest real estate development in the Gatineau Valley is located in Blue Sea. EDJA Signature is a turnkey real estate development just 1 hour and 15 minutes from Gatineau--Ottawa, in the municipality of Blue Sea, where nature and comfort come together. EDJA Signature offers wooded one-acre lots and custom-built homes, carefully constructed by local contractors. A dream location on Chemin du Lac-Castor, nestled in the mountains, just 5 minutes from the Edja Lake boat launch and 7 minutes from the public beach at Blue Sea Lake.