National Building Compliance
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Two site inspectors in hi-vis vests checking timber-frame wall insulation with a tablet

Building compliance services

Every test, calculation and report we arrange, grouped into three categories.

Choosing building compliance services by evidence type

Begin with the decision

Choose services by the question your project needs to answer. Is the design still being developed, is the site ready for measurement, or does an occupied building need assessment? Those starting points lead to different information requests and different appointments.

Send the wording of any request from a reviewer, together with the relevant drawings. A report title on its own may leave the intended scope unclear. Knowing who will use the evidence helps establish its purpose before assessment work begins.

Keep the project context attached

Describe the building use, proposed changes, construction stage and evidence already available. Highlight uncertain specifications instead of allowing provisional details to look settled. An assessor can then distinguish an agreed input from an assumption awaiting confirmation.

The categories below organise the work by its main role. They do not divide a project into separate information streams. A revised layout or changed building system may affect appointments and assessments in more than one category.

Surveyor in a hard hat using survey equipment on a building site

What each building compliance service category covers

CategoryScope and working informationHow the evidence is used
Testing and InspectionWork concerned with the existing building, installed systems and measured performance. Assessors need a clear inspection scope, suitable access and an accurate account of site readiness. Existing records help explain what can be inspected and what remains concealed.Findings connect the physical building with the project record. They can inform remedial decisions, provide measured inputs for other assessments and document the condition encountered during the visit.
Energy and CalculationsDesk-based assessment of building fabric, energy, ventilation, water and comfort questions. Inputs may include drawings, construction details and equipment specifications. Agreed revisions matter because a calculation represents the information supplied, rather than every possible design option.Outputs help the design team compare choices and assemble the relevant evidence. The intended assessment route and building type determine which inputs are needed and how results should be presented.
Design and PlanningTechnical input while proposals, specifications and application documents are being developed. This category brings environmental context and design questions into the assessment brief. Planning requirements differ by council, as reflected in planning application guidance.Reports support decisions about the proposal and explain the assessment basis to reviewers. Resolve the local brief before commissioning work so the requested evidence addresses the application rather than an assumed national checklist.

When building compliance services enter the project

This is a coordination sequence, not a universal list of obligations. Stages can overlap, particularly on phased schemes or work in occupied buildings. The service links identify possible routes for a scope discussion; inclusion does not mean every project needs them.

  1. Feasibility and existing-building review

    Bring Testing and Inspection together with Design and Planning before fixing the brief. Share existing reports, the intended use and known site constraints. Decide which information can be reused and which questions need fresh investigation before design options become commitments.

  2. Planning and concept design

    Lead with Design and Planning, supported by early calculation inputs. Confirm the council's current expectations because planning requirements differ by council; planning application guidance explains information requirements. Keep the assessment assumptions visible while massing, layout and servicing options remain open.

  3. Technical design and specification

    Energy and Calculations takes a larger role as construction details settle. Coordinate this with design advice rather than sending each assessor a different drawing issue. For applicable work, Approved Document O provides overheating guidance; agree the assessment route before commissioning related work.

  4. Construction and installation

    Review readiness with the Testing and Inspection assessor while retaining a route back to the calculations. Record substitutions and changed details as they occur. Avoid treating an approaching completion date as confirmation that the building is ready for every measurement or inspection.

  5. Completion and evidence assembly

    Bring measured results, final specifications and the current assessment records together. Check that each document identifies the intended building and reflects the agreed scope. Resolve unexplained differences before sending a mixed set of draft and final documents to the reviewer.

  6. Occupation and future changes

    Testing and Inspection and Energy and Calculations may return as use, management or improvement plans change. The HSE duty-to-manage guidance explains asbestos responsibilities for relevant premises. Establish the responsible person's brief and available records before arranging further assessment.

How building compliance services relate across categories

What happens when the specification changes?
Tell your contact what changed, when it changed and which drawing records it. A fabric revision may affect calculation inputs; a changed ventilation arrangement may affect both design assumptions and site work. The relevant assessors can identify the consequences without reopening unrelated parts of the scope.
Can one report replace work in another category?
Agree this against the requested evidence rather than similar report names. A design assessment and a site measurement answer different questions. Sharing inputs can reduce repeated information requests, but it does not make separate assessment purposes interchangeable or remove the need to check the receiving body's request.
How should documents pass between assessors?
Use an identified drawing issue, a clear specification and a record of unresolved points. Send complete reviewer comments rather than a shortened interpretation. Keeping those items together helps each assessor see which inputs are current and where another assessment still depends on a decision.

Full building compliance services by category