Residential Due Diligence on Building Regulations

I'm seeking a comprehensive due diligence report on a residential property concerning UK building regulations. The property started extension without prior permission & then took retrospective planning permissions. Want to verify whether all things are in order and the project can be further executed. The construction is in halt for last one year & the owner claims, that they are interested in selling now. The report should cover both current condition assessments and future compliance planning.

Key areas of focus:
- Structural Integrity: Assess the soundness and stability of the property. wheteher inspection by the council carried out after retrosp[ective permission. whether this incomplete structure is valid for future construction.
- Fire Safety: Evaluate compliance with fire safety regulations and identify any potential hazards.
- Energy Efficiency: Review current efficiency ratings and suggest improvements for future compliance.

Ideal Skills and Experience:
- Expertise in UK building regulations, particularly for residential properties.
- Experience in conducting thorough property assessments.
- Knowledge of fire safety standards and energy efficiency requirements.
- Strong analytical skills to provide clear, actionable recommendations.

Please include samples of previous work and any relevant certifications.