An Integrated Engineering‒Valuation Model for Mixed-Use Developments: A Personal Applied Research Contribution to UK Building Safety, Lifecycle Resilience & Sustainable Decision-Making By Parth Kohli MCIArb, MSc, AssocRICS, RICS Registered Valuer, PMP, MRPSA- Director – Crestline Valuers & Estates (RICS-Regulated Firm)

PROJECTS

Project 1 – £180m Mixed-Use Development (UK)

Summary

• A large regeneration scheme with residential towers, commercial podium and critical

infrastructure. Responsible for valuation engineering, building pathology, risk analysis and

investment due diligence.

Engineering Contribution

• Led valuation engineering aligned with RICS Red Book.

• Performed building pathology (façade anchoring, structural deformation, waterproofing).

• Conducted lifecycle modelling using deterioration curves & 30-year maintenance cycles.

• Designed Crestline’s Engineering–Valuation Model, now a firm-wide tool.

Impact

• Helped secure £40m in funding.

• Improved technical certainty of cost, risk, and lifecycle analysis.

• Identified engineering issues early, enabling negotiation leverage.

• Raised internal professional standards.

Project 2 – £200m Infrastructure Dispute (UK/Middle East)

Summary

• A dispute involving major delay, variation, cost and technical inconsistencies requiring

engineering-led quantum analysis.

Engineering Contribution

• Delay engineering using critical-path deviation tracking.

• Quantum modelling based on construction cost and design changes.

• Drafted expert documentation used for arbitration strategy.

Impact

• Reduced arbitration exposure by 35%.

• Improved clarity between stakeholders.

• Strengthened negotiation and settlement outcomes.

Project 3 – High-Rise Structural Defect Analysis

(India)

Summary

deviation.

• 30-storey tower facing façade failure, RCC cracks, waterproofing failure and settlement

Engineering Contribution

• Performed pathology inspection and structural diagnostics.

• Mapped root-cause pathways of water ingress and load transfer issues.

• Designed engineering remediation plan for structural safety.

Impact

• Cut long-term maintenance cost by 22%.

• Improved structure reliability and safety compliance.Project 4 – 50-Acre Integrated Township (India)

Summary

• A multi-phase township with utilities, roads, commercial areas and housing clusters.

Engineering Contribution

• Cost engineering for multi-phase procurement.

• Structural/infrastructure specification review.

• Construction methodology and phasing improvements.

Impact

• Reduced overrun risks significantly.

• Strengthened contractor evaluation and selection.

• Improved year-one delivery accuracy.