BaseBuilders is a billing-first system built specifically for architecture and engineering firms. Everything in the system feeds billing—proposals, phases, time, expenses, and consultant costs—so invoices are assembled automatically without spreadsheets or manual rework. Unlike generic project management tools, BaseBuilders is designed around how A/E firms actually earn fees: by project, phase, and contract type (fixed fee, hourly, NTE, and more). Firms use BaseBuilders to cut billing time, control scope creep, and see real-time project profitability before issues show up at the end of the job. If you are still tracking work in spreadsheets and assembling invoices manually, BaseBuilders replaces that process with a single, connected system built for how your firm actually operates.