£79 sourced reading · Sample York Hempland
United Kingdom · guide · 6 November 2026
Passive house and airtightness conditions on UK planning decision notices
How to read passive house, air permeability and blower-door conditions on sealed UK planning decision notices. Not planning advice.
Why this wording appears
Low-energy residential and small commercial schemes sometimes receive airtightness targets, testing schedules and passive house methodology references so discharge routes line up with building control.
Cross-read heat recovery ventilation conditions, air-source heat pump conditions and materials condition wording when fabric and systems interlock.
Common wording patterns
| Phrase | What to check | Note |
|---|---|---|
| Achieve passive house classic / plus | Certification route | Named standard |
| Maximum air permeability | Testing metric | Method statement |
| Blower door test pre-occupation | Completion gate | Witness tests |
| Thermal bridge details | Drawing gate | Pre-commencement |
| PHPP / energy model | Document list | Version control |
Notice vs approval-of-details habit
Some airtightness limits are compliance duties; others require written approval of junction details before external insulation is fixed.
Split pre-commencement versus prior-to-occupation triggers exactly as printed — DecisionBrief classifies wording only.
Worked example
A condition requires the development to meet certified passive house classic with air permeability not exceeding a stated value confirmed by pre-completion testing. Tracker rows: certification target, numeric limit, testing standard, witness requirement, and separate ventilation commissioning condition if listed.
Common misreadings
- MVHR commissioning assumed to satisfy airtightness testing without a blower-door row.
- Generic energy efficiency conditions read as passive house certification without a named route.
- Officer summary headings substituted for numbered conditions on sealed PDFs.
- Temporary humidity management assumed to relax airtightness targets.
Triage checklist
- Named standard or metric: Condition — Extract verbatim
- Testing timing and witness: Often — Site diary
- Thermal bridge submissions: Sometimes — Drawing ids
- Separate HRV commissioning row: When cited — Two numbers
- Approved drawing list reference: Often — Register match
Retrofit and phased works
EnerPHit-style projects may cite staged thresholds — log each phase trigger.
Extensions to occupied homes may need temporary weathertightness plans — track sequencing conditions.
Modular panels may shift testing points — note factory versus site tests.
Heritage skins may cap external insulation — read materials conditions in parallel.
Developer sales plots may vary specification — map plot-specific schedules.
Evidence habits
Photograph door set installations only when officers request — follow site media rules.
Store calibration certificates for test equipment cited in conditions.
Align passive house consultant reports with council reference numbers.
Highlight when conditions reference design-and-access statements beyond the notice text.
Log energy modelling file names exactly as approved-drawing lists name them.
Who uses this literacy
Homeowners ordering readings before mortgage drawdowns benefit from trigger clarity.
Small developers sequencing subcontractors need test dates early.
Architects coordinating PHPP updates need condition numbers for RFI responses.
Contract administrators tracking LC conditions mirror council numbering — do not paraphrase.
DecisionBrief reads public notices into sourced PDFs — we do not design junctions.
Readers maintaining a change log should note which URL variant carried each wording change — mobile, app and partner feeds can diverge from the main desktop page without a release note.
When legal, finance and marketing each touch the same module, add a reviewer initial beside the register row so traceability survives staff turnover.
Archive dated exports from CMS and e-commerce platforms alongside screenshots — disputes often turn on what consumers could see on a specific day.
Readers maintaining a change log should note which URL variant carried each wording change — mobile, app and partner feeds can diverge from the main desktop page without a release note.
When legal, finance and marketing each touch the same module, add a reviewer initial beside the register row so traceability survives staff turnover.
Archive dated exports from CMS and e-commerce platforms alongside screenshots — disputes often turn on what consumers could see on a specific day.
Readers maintaining a change log should note which URL variant carried each wording change — mobile, app and partner feeds can diverge from the main desktop page without a release note.
When legal, finance and marketing each touch the same module, add a reviewer initial beside the register row so traceability survives staff turnover.
Archive dated exports from CMS and e-commerce platforms alongside screenshots — disputes often turn on what consumers could see on a specific day.
Readers maintaining a change log should note which URL variant carried each wording change — mobile, app and partner feeds can diverge from the main desktop page without a release note.
When legal, finance and marketing each touch the same module, add a reviewer initial beside the register row so traceability survives staff turnover.
Archive dated exports from CMS and e-commerce platforms alongside screenshots — disputes often turn on what consumers could see on a specific day.
Readers maintaining a change log should note which URL variant carried each wording change — mobile, app and partner feeds can diverge from the main desktop page without a release note.
When legal, finance and marketing each touch the same module, add a reviewer initial beside the register row so traceability survives staff turnover.
Archive dated exports from CMS and e-commerce platforms alongside screenshots — disputes often turn on what consumers could see on a specific day.
Readers maintaining a change log should note which URL variant carried each wording change — mobile, app and partner feeds can diverge from the main desktop page without a release note.
When legal, finance and marketing each touch the same module, add a reviewer initial beside the register row so traceability survives staff turnover.
Archive dated exports from CMS and e-commerce platforms alongside screenshots — disputes often turn on what consumers could see on a specific day.
Readers maintaining a change log should note which URL variant carried each wording change — mobile, app and partner feeds can diverge from the main desktop page without a release note.
When legal, finance and marketing each touch the same module, add a reviewer initial beside the register row so traceability survives staff turnover.
Archive dated exports from CMS and e-commerce platforms alongside screenshots — disputes often turn on what consumers could see on a specific day.
Questions
Do passive house conditions replace building regulations?
Planning conditions operate alongside building control — read both regimes separately.
Is airtightness testing always prior to occupation?
Often yes when stated — some conditions allow staged testing; quote the line.
Will DecisionBrief run blower-door tests?
No. DecisionBrief reads notice wording into sourced PDFs.
Can MVHR commissioning discharge an airtightness row?
Only when the condition explicitly links them — split rows otherwise.
Do officer reports override numbered conditions?
The sealed notice text governs — cite numbered conditions.
Order a sourced reading for conditioned schemes
The £79 pack cites numbered conditions on sealed notices.
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