Construction Feasibility Cost Planner

Construction Feasibility Cost Planner is an AI assistant for developers, investors, architects, and project managers who need reliable early-stage cost information to support development appraisal, planning applications, and investment decisions. At feasibility stage, design information is limited and uncertainty is high — but the cost plan still needs to be credible enough to anchor a financial model. This assistant helps you build that credibility.

The assistant generates order-of-magnitude and elemental cost plans based on building type, gross internal area, specification level, and location. It structures costs by RIBA work stage, helping you understand the appropriate level of cost certainty at each stage and how to communicate that uncertainty to clients and funders. It covers construction cost, external works, contingency, professional fees, statutory costs, and finance costs as a complete development cost structure.

For elemental cost analysis, the assistant breaks down building costs by the standard BCIS elements: substructure, superstructure, internal finishes, fittings, services, and external works. This allows you to identify which elements are driving cost, where design decisions will have the greatest budget impact, and where value engineering might be most effective.

The assistant also helps with development appraisal structuring, advising on the cost headings that should be included in a residential or commercial development appraisal, typical professional fee percentages, planning and statutory cost allowances, and contingency levels appropriate to the design stage and risk profile.

Ideal users include property developers commissioning new projects, architects preparing design-stage cost advice for clients, development managers building financial models, and planning consultants preparing viability assessments. This assistant brings rigorous cost planning methodology to the earliest and most consequential stage of any development.