HomeSolicitations (IFBs, RFPs, and RFQs) Solicitations (IFBs, RFPs, and RFQs) Prosperity Village Cottage Homes Project Subcontractor Certification Packet Once certified, you will be added to our pool of certified contractors. This will enable the WPBHA to share information, quickly verify and engage subcontractors when we are looking to contract out various projects. Subcontractor Certification Form WPBHA Code of Ethics – Vendor Statement Southridge Housing Survey Southridge Housing Survey Map Questions of Southridge Housing Survey RFQ