Consensus Preliminary Estimate – Foundation & Framing

Dear Yoni Chriqui,

Following our review of the three AI-generated estimates (Grok, Gemini, and ChatGPT), we have developed a consensus summary for the foundation and framing scope of the 10-unit project at 848 N Detroit Street. This average captures the core metrics for cost, labor, materials, and schedule, stripping out extreme highs and lows for a balanced view.

Consensus Averages

• Total Estimated Cost (Foundation + Framing): $591,337
• Materials: ~$322,300 (54% of total)
• Labor: ~$269,037 (46% of total)
• Average Duration: ~67 days (~9.5 weeks) from start of excavation to framing inspection
• Basis: Arithmetic mean of comparable line items across all three plans, adjusted for realistic 2025 Southern California pricing

Key Points

• The average material cost reflects a mix of dimensional lumber, engineered wood, ready-mix concrete, rebar, hardware, and proprietary Hardy Frame panels.
• Labor costs assume standard Los Angeles market rates for concrete and framing crews, with productivity assumptions consistent across the three plans.
• The timeline assumes sequential work with some overlap (e.g., framing materials delivered during concrete curing) and a 5-day work week.

If you’d like, we can proceed to the next step—sourcing materials and labor to complete the bid package with live supplier quotes and subcontractor proposals.