Thursday  April 27, 2017
Professional indemnity Insured and Licensed Company ABN: 20 054 540 395 ACN: 054 540 395

It all started in 1976, at Strathfield Sydney, where our company director Robert Speirs-Ferrari established a licensed building and design company providing building advice solutions, architectural designs and hands-on construction. In 1986 at Lane Cove Sydney, Robert established a Building Diagnostic Consultant firm, and in 1989, the Building Diagnosis Centre Pty Limited for Building Engineering Consultants and Building Dispute Consultants.

Our Experts
Our Experts

Building Diagnosis Centre have building engineering consultants and building inspectors with a wealth of knowledge. They are chartered fellow and accredited building consultants, and specialists forensic building consultants. They will eliminate your faulty waterproofing, concrete corrosion, building faults, disputes, issues with asbestos and building access for people with disabilities. Call Robert to discuss your building inspection.

Expert Advice
Expert Advice

Our senior building consultants will give you expert advice how to prevent building damage, resolve construction problems, causes of corroding waterproofing damage, faulty concrete and steel structures. We supervise remediation, inspect faulty construction work and handle building contract disputes regarding costs and faulty work complaints. Call us today and talk about it with Robert Speirs-Ferrari.

We give best expert building advice Established 40 Years


Since 1986 – Chartered forensic building waterproofing inspection consultants


Building & Waterproofing Engineering Advice

Building Diagnosis Centre Pty Ltd, is a leading Sydney multi-disciplinary firm of chartered, accredited building consultants, building inspectors, engineers and waterproofing consultants, providing residential, commercial and government building inspections and expert witness consultancy.


Client satisfaction  advantages

  1. Clients receive correct diagnosis of building, waterproofing and construction faults.
  2. Know their property complies structurally sound waterproof ready to occupy or sell.
  3. Gain first-hand knowledge on building complaints during expert building inspections.
  4. Confirming if building faults are minor or serious problems for a building complaint.
  5. Advise waterproofing defects if caused by normal wear and tear or faulty construction.
  6. Information on actual remedial work to fix building corrosion, faults and waterproofing.
  7. Ensure expert building waterproofing reports prove the causes and people responsible.
  8. Written specification reports readily attract professional builders for rectification costs.
  9. Gain knowledge of tradesmen’s’ responsibilities to rectify their waterproofing mistakes.
  10. Supporting clients and building lawyers with sound comprehensive expert reports.
  11. Clients having their own expert witness in NSW Fair Trading and NCAT tribunals.
  12. Recommending responsible and professional licensed remedial rectification builders.
  13. Having experts’ project manage their building faults and waterproofing rectifications.
  14. Clients join our long list of satisfied clients spanning 30+ years.

Contact us today via email –

Free building and waterproofing advice via email.

Just email us short bullet points of your waterproofing and building complaints. 

Keep it short for FREE INITIAL LIMITED ADVICE from –


He will respond with best approach to resolve any issue.

To request a fee proposal, see details below.

Telephone 02 9402 0140  0408 911 210 


Diagnostic building investigations

As passionate multi-disciplinary building problem solvers, our aim is always to achieve what is best for our clients’ buildings and structures. Why, as properties are required to comply, and to continue to perform satisfactory when purchased by new owners. We achieve this by best practice property inspection surveys, investigating construction work in progress, checking materials containing bonded fibro cement asbestos, evaluating contract documents, specifications, architectural and engineering drawings, and local council approvals. Properties are also assessed against the National Construction Code Building Code of Australia (NCC/BCA), Australian Standards and manufacturers’ technical data sheets. We give expert opinion evidence in Fair Trading and Courts.


Expert Verbal Reports  Photographic Reports  Written Reports

Verbal Reports

These oral reports are given to our clients at the property and contain best expert opinion evidence and practical advice. Our verbal advice includes explaining the causes of the contract dispute issues, the reasons the faulty work occurred, the remedies and solutions of the building and waterproofing defects as well as the construction damage that occurred and if damage is due to normal ‘wear and tear’. Advantages – includes given in person immediately at the property that allow the client to discuss and fully understand the situation or otherwise given by phone conference whilst at the property or later from our office.

Photographic Evidence Reports

Photographs we take of our inspection areas, are relied upon for future evidence, as well as for preparing a quick turnaround photographic evidence report with captions and a covering letter of our findings. Advantages – photograph documents can be served on the other party as a stand alone evidence document as a strategy to settle a building issue. Also later forms part of the more expensive comprehensive written expert report.

Written Reports

When required, our expert written reports fully document our observations, testing, opinions, and with our practical solutions that may include specifying the necessary work scope for costing by our preferred experienced independent remedial builders – we can project manage the remedial works when instructed by the client.


Project Manage Waterproofing Issues

Our chief expert Robert Speirs-Ferrari*, project manages our clients’ works for quality control inspections of waterproofing membranes roofs, roof and wall flashings and remedial work at critical stages to certify compliance and progress payments. Common complaints and remedial work is water related defects to strata units’ balconies, terraces, flat roofs, wall flashings and rising/penetrating damp. We commonly give advice on the effects of water ingress from strong wind-driven rain, due to faulty waterproofing membranes; a key factor requiring expensive rectifications. Robert continues to put people in safe and sound waterproofed buildings and structures.


Project Manage Spalling Concrete Issues

Coastal Corrosion Strata Damaged Buildings

Our chief expert Robert Speirs-Ferrari*, project manages our clients’ works by inspecting remedial work at critical stages to certify compliance and progress payments. Common complaints and remedial work is water related defects. We commonly give advice on the effects of water ingress from strong wind-driven rain, due to faulty waterproofing membranes; a key factor requiring expensive rectifications. Robert continuously puts people in safe and sound waterproofed buildings and structures.


Building Expert Litigation Consultant

*Robert Speirs-Ferrari FAIB MMBA MBDA NBPR AffilIEAust chartered fellow building professional, accredited building consultant, waterproofing consultant, consulting building designer, licensed builder and licensed asbestos inspector with 40-years’ career experience in the building and construction industry. Robert gives general and specialist building construction advice on causes of building waterproofing complaints and disputes together with practical solutions.


Building Disputes – Dispute Expert 

Technical inquires for expert solutions to building disputes, are handled by our chief forensic expert Robert Speirs-Ferrari*. Robert is a leading building and design expert, advising clients on best solutions to damaged building construction and claims made under Home Warranty Insurance – NSW Home Building Compensation Fund. Robert represents clients at NSW Fair Trading mediation, NSW Civil and Administrative Tribunal (NCAT) and Courts. As expert witness Robert complies with all requirements of the Expert Witness Code of Conduct.


Our Consultants Use A Proven Diagnostic Procedure

Our professional procedures provided by our qualified experienced multi-disciplinary chartered and accredited building consultants, waterproofing consultants and structural engineers, suits all properties in residential and commercial strata buildings (and industrial and local government structures). Our proven systematic approach identifies construction concerns, complaints, damage, faulty work and materials. This results in our building experts properly diagnosing and determining building damage sustained, causes, and required solutions resolving building and construction disputes. Part of our building inspectors and forensic building and waterproofing experts proven systematic approach is our 10-point methodology listed below.


We have a 10-point service methodology

We leave no stone unturned!

1 Discussion – we need the full history of the building waterproofing issue.

2 Inspection – we undertake our visual building inspections.

3 Testing – we perform moisture meter tests for rising damp, water ingress through walls, balconies or roof membranes.

4 Examination – physical exploratory intrusion into wall cavities determines root causes / problems.

5 Assessing – we analyse and evaluate our findings and provide research.

6 Reporting – prepare expert’s report and photographic evidence.

7 Remedial work – conclusion includes comprehensive scope of rectifications.

8 Recommendations – we advise on remedial building contractors for quotations.

9 Contracts and manage – we arrange NSW Fair Trading building contracts. Project inspection of work, certify at critical stages, progress payments, and on completion.

10 The Results – Once done, the benefits to our clients is a sound, safe, waterproofed property.


Our Consulting service fee proposals

Clients receive our “obligation-free consulting service fee proposal”. Proposals are detailed. Explaining our professional consulting services and hourly fee costs for the best methodology required to resolve client’s building issues, disputes, complaints, damage, reporting, inspections, certifying remedial work and building expert witness. Due to many unknowns and extend of building damage, causes and our time required, we offer fee estimates only (where possible) and our usual terms and conditions.

Robert Speirs-Ferrari FAIB MBDA MMBA NBPR AffilIEAust

M.Dsgn(UTS), GradDip.Dsgn, GradCert.Dsgn, Cert.ArchHerit,
Dip.BldgConst, Cert.Lic’d Bldg, Cert.Lic’d Asbestos Superviser, Cert.WaterproofConst,

Managing Director, Principal MBA Accredited Building Consultant, BDA Building Design Consultant, FAIB Chartered Fellow Builder, FAIB Chartered Fellow Building Professional, WCA Asbestos Inspector, OFT Licensed Builder and Waterproofing Consultant