Adrian Tagg (MRICS) is a lecturer in Building Surveying at the University of Reading, UK. He also runs TechDD Ltd and has over a decade of experience delivering technical due diligence to international investors making acquisitions in Northern Europe.

1. Introduction
2. Defining Technical Due Diligence and Commercial Surveying
3. The Nature of TDD and Commercial Building Surveys
4. The Acquisition Process
5. Environmental Due Diligence

1. Commercial property
2. Clients
3. Professionals
4. Constraints and Checklists
5. Aims, Objectives and Outcomes
6. TDD - Desk Survey Prior to the Site Visit
7. The Visit or Site Inspection
8. Reporting Process
9. Further Investigations
10. TDD and Building Management

1. Outline the Contract Instruction
2. Scope of Works
3. Specific Services
4. Limitations
5. Programme
6. Fees

1. Offices
2. Retail
3. Industrial
4. Residential
5. Leisure
6. Public Sector

1. Strength and Stability
2. Durability
3. Weathertightness
4. Thermal Efficiency
5. Technical Due Diligence Process and Inspection
6. Inspection Principles
7. Flat Roofs Versus Pitched Roofs
8. Cold Deck Versus Warm Deck
9. Roof Coverings
10. Parapet Walls
11. Rainwater Evacuation
12. Roof Lights
13. Other

1. Low-rise Commercial Buildings
2. Structural Movement of Low-rise Commercial Properties
3. Foundation Movement
4. Medium- and High-rise Commercial Properties
5. Concrete Structure
6. Steel Structure
7. Timber Structure
8. Structure Summary

1. Functional Requirements
2. Common Façade Materials
3. Brick
4. Loadbearing Stone Facades
5. Painted Stone
6. Stone Cladding
7. Metal Façade Cladding
8. Render
9. Concrete
10. Concrete and Industrial Buildings
11. Timber
12. Glass
13. Façade Cladding Systems
14. Weathering Steel
15. Vegetation
16. Graffiti
17. Facades Summary

1. Common Parts
2. Surveying Internal Finishes
3. Site Inspection and Survey
4. Floors
5. Walls
6. Internal Partitions and Doors
7. Ceilings
8. Specific Use Areas
9. Finishes Summary

1. Heating, Ventilation and Air Conditioning (HVAC)
2. Electricity
3. Water/Sanitary Provision
4. Fire Detection / Alarm /Firefighting
5. Lifts
6. Summary of Building Services Assessment

1. Car Parking
2. Access Roads
3. Pavements, Patios and Decking
4. Storage Yards and Hardstanding Areas
5. Waste Areas
6. Outbuildings
7. Lighting
8. Signage
9. Fencing and Boundaries
10. Vegetation and Landscaping
11. Summary of External Areas

1. Health and Safety
2. Fire Precautions
3. Accessibility
4. Environmental Consideration and Sustainability
5. Deleterious Materials
6. Cultural Heritage
7. Statutory Matters
8. Rights of Way, Easements and Shared Services
9. Boundaries
10. Guarantees and Warranties
11. Leasehold and Repairing Liabilities