Service · Acquisition, sale, portfolio

Technical Due Diligence of Building Services

Building services shape the operating cost and investment needs of a property and are the hardest part to judge from the outside. Our TDD makes technical risks visible before they become price risks.

  • Red flag report with the key risks within 5 working days after the site inspection
  • All MEP disciplines assessed against one scheme
  • Investment needs short-, medium- and long-term, costs to DIN 276
  • Independent, with no interest in execution

View sample report, PDF with fictitious data

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  • 10+years of MEP design
  • 75+completed projects
  • 25+people in the team
  • 1 Mrd.+euro MEP volume of the reference projects
  • VDI, Association of German Engineers · Member
  • Ingenieurkammer Hessen, Member
  • buildingSMART Deutschland, Member · BIM and IFC
  • Energieeffizienz-Experten, Listed in the German register of energy efficiency experts for federal funding programmes

What is a technical due diligence of building services?

Aurora Engineering provides technical due diligence for building services: an independent assessment of condition, remaining service life, maintenance backlog and investment needs of the mechanical and electrical systems, as a basis for decisions by investors, buyers, lenders, owners and operators.

Scope of services

What our technical due diligence covers

  • On-site survey

    Inspection of plant rooms and systems, review of as-built documents, maintenance and inspection records.

  • Condition assessment

    Assessment of all MEP disciplines by condition, age and remaining service life with a transparent rating.

  • Investment needs (CAPEX)

    Cost estimate for repair and replacement, structured into short-, medium- and long-term needs.

  • Operator duties and compliance

    Review of inspection and maintenance duties, such as drinking water hygiene, operational safety and electrical systems.

  • Energy and ESG

    Classification under German energy law, energy efficiency and decarbonisation pathway, on request with reference to EU Taxonomy and CRREM.

  • Red flag report

    Short report with the key risks for fast decisions, delivered within 5 working days after the site inspection, followed by the full report.

Acquisition or sale in preparation? Briefly describe the property and you will receive a proposal within 24 hours on working days.

Who it is for

Who TDD is for

  • Investors and buyers

    who want to know technical risks and follow-up costs before acquisition.

  • Owners and sellers

    who need reliable technical documentation for the sales process (vendor due diligence).

  • Operators and asset managers

    who want to make maintenance and modernisation of their portfolio plannable.

  • Banks and lenders

    who want the technical condition and investment needs of the collateral assessed before committing to finance (lender due diligence).

Process and interfaces

How a technical due diligence proceeds

  1. 1

    Scoping

    Agreement on scope, depth and timetable, access to the data room.

  2. 2

    Document review

    Evaluation of drawings, maintenance contracts, inspection reports and consumption data.

  3. 3

    Site inspection

    Inspection with photo documentation and interviews with operations and facility management.

  4. 4

    Report

    Red flag report and final report with condition assessment, cost estimate and recommendations.

Standards and guidelines

Basis and assessment criteria

Standards and guidelines

  • DIN 31051 and EN 13306 maintenance
  • VDI 3810 operation and maintenance of building services
  • GEFMA 190 operator responsibility
  • German Drinking Water Ordinance and VDI 6023
  • German operational safety regulations and DGUV V3
  • German Buildings Energy Act (GEG), EU Taxonomy, CRREM

Quality factors and key figures

  • Independent assessment with no interest in execution
  • One rating scheme for all disciplines
  • Cost estimate structured to DIN 276
  • Photo documentation per system
  • Report in German or English

Frequently asked questions

Frequently asked questions on technical due diligence

What does a technical due diligence of building services examine?

It assesses condition, remaining service life and investment needs of the building services: heating, ventilation, cooling, plumbing, electrical systems, building automation and lifts. It also covers operator duties and the energy classification.

How long does a TDD take?

We align the timetable with your transaction process. We deliver the red flag report within 5 working days after the site inspection and the full report afterwards.

Do you also carry out TDD for portfolios?

Yes. For several properties we use one rating scheme so that the results are comparable.

Want to know the technical risks before deciding?

We assess the building services of your property independently, transparently and within your transaction timetable.

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