Web portal for fence installation contractor: estimation and project management

We need to develop a web application for a company that installs fences on private and commercial properties. The foundation of the system is an instant estimate calculator: the client enters total length in linear meters, selects material (cedar board, vinyl, wire mesh, aluminum, wrought iron or composite), height, number of gates and terrain complexity, and the system returns a calculation with breakdown of materials, labor and debris removal. Prices are taken from a rate table editable in admin, so the contractor changes rates without code changes. On the second step the customer uploads photos of property boundaries and rough sketch, places markers on the embedded map marking corners, and describes obstacles like slopes or old fence for demolition. Each submitted request becomes a lead in the panel. After work approval, the application generates a permissions checklist for the specific municipality (surveying, HOA approval, calling utilities for marking, setback confirmation) with deadlines and attachments. Installation calendar distributes crews, blocks bad weather days and sends client confirmations and reminders. As work progresses, the crew uploads progress photos forming a dated project timeline available to the owner from their account. Upon completion, the system stores warranty documents, material lot numbers and maintenance schedule launching reminders about staining or inspections. Result: responsive website for clients, contractor admin panel, estimate and rate management, map, role-based access, export estimates and warranties as PDF and documentation. Database schema and deployment instructions needed.