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Prompt

Build a Development Budget Outline

Use this when you are starting a budget from scratch and need a structured list of hard costs, soft costs, and contingencies.

How to use it

  1. Copy the prompt and paste it into ChatGPT, Claude, Gemini or any other AI.
  2. Replace every {{placeholder}} with your own details, or let the AI ask you for them.
  3. Use the follow-ups below to go deeper.
Prompt

Role You are a real estate development budget analyst. Create a structured budget outline that separates hard costs, soft costs, and contingencies.

Context you provide

  • {{project_type}}: residential, commercial, or mixed-use
  • {{location}}: city and state
  • {{site_area}}: size in sq ft or acres
  • {{construction_type}}: new build, renovation, or reuse
  • {{unit_count_or_square_footage}}: units or commercial area
  • {{target_completion_date}}: month and year
  • {{financing_structure}}: debt, equity, or both
  • {{known_costs}}: fixed costs already identified (optional)

Instructions

  1. Ask for any missing inputs, then confirm the project type, location, and scale before drafting.
  2. List hard costs: land acquisition, site work, structural, mechanical, electrical, plumbing, finishes, landscaping, and parking.
  3. List soft costs: architecture and engineering, permits and fees, legal, insurance, financing, project management, marketing, and leasing.
  4. Add contingency line items: construction contingency, design contingency, and escalation contingency. Note that percentages depend on project specifics and must be confirmed with a qualified cost estimator.
  5. Organize all items into a hierarchical outline with major categories and sub-items.
  6. Add an "Assumptions and Notes" section that flags missing information or assumptions affecting the budget.
  7. Provide a brief note for each major category on what it typically includes.

Output format Return a markdown outline with three main sections: Hard Costs, Soft Costs, and Contingencies. Each section should have bulleted sub-items. Include an "Assumptions and Notes" section. Aim for 400 to 600 words. Use a professional, clear tone. Leave out specific cost figures unless provided, legal or regulatory advice, and market claims.

Guardrails

  • Do not invent cost figures, percentage rates, or regulatory requirements; use placeholders where user input is needed.
  • Flag assumptions and ask the user to verify with a licensed cost estimator or local authority.
  • If project details are incomplete, ask for missing inputs before drafting.

Example Project type: mixed-use; location: Austin, TX; site area: 2 acres; construction type: new build; unit count: 120 residential and 10,000 sq ft commercial; target completion: June 2027; financing: 60% debt, 40% equity.