Home · Guides · Heat recovery ventilation conditions on UK planning decision notices

Why heat recovery ventilation conditions appear

Passivhaus-style dwellings, apartment conversions and airtight retrofits often receive conditions controlling MVHR unit location, intake and exhaust grille details, acoustic mitigation and commissioning certificates before first occupation.

Homeowners and small developers read those lines alongside ventilation extraction, air source heat pump and noise conditions to programme installer submissions.

Cross-read ventilation extraction conditions, air source heat pump conditions, and noise and hours conditions.

Common heat recovery ventilation wording patterns

Relationship to energy and battery storage schedules

Battery storage energy conditions may appear on wider electrification retrofits — read battery guide when MVHR and storage are combined on one notice.

District heating network conditions concern communal heat — unrelated to dwelling MVHR unless officer text links systems.

See battery storage energy conditions and district heating network conditions.

Worked example

Condition 9: “The MVHR external terminals shall be installed in accordance with approved details and an acoustic report shall be submitted to and approved in writing prior to occupation.” Notes:

• Approved details: Grille design gate — match sealed drawings.
• Acoustic report: Pre-occupation submission — book consultant early.
• Prior to occupation: No move-in until discharge — diary trades.
• Heat pump row: Cross-read if ASHP exhaust nearby.

Common misreadings

• Kitchen extractor row assumed to cover whole-dwelling MVHR. Read scope words.
• Officer report MVHR note assumed approved. Sealed condition governs.
• Building regs ventilation certificate assumed to discharge planning. Planning conditions still bind.
• Informative energy note treated as condition. Numbered conditions bind.

Discharge reading checklist

1. List MVHR, grille and acoustic clauses with condition numbers.
2. Map pre-occupation triggers against commissioning dates.
3. Cross-link noise rows for terminal locations near boundaries.
4. Verify plant and grilles on latest approved drawing revision.
5. Log air source heat pump rows separately on electrification schemes.

Overlooking and daylight crossover

Overlooking privacy conditions may govern upper windows near neighbours — unrelated to MVHR unless grilles are mounted on the same elevation.

Daylight sunlight conditions may appear on dense urban retrofits — cite each theme separately from ventilation rows.

See overlooking privacy conditions and daylight sunlight conditions.

Green roof and rainwater adjacency

Green roof biodiversity conditions concern planting — unrelated to MVHR unless roof terminals penetrate green layers.

Rainwater harvesting conditions concern water reuse — separate memo row from mechanical ventilation unless linked in officer text.

See green roof biodiversity conditions and rainwater harvesting conditions.

Decision notice vs officer report

Officer reports may discuss energy strategy narratively — DecisionBrief reads numbered conditions on the sealed notice.

Informatives vs numbered conditions guide helps when energy advice sits beside binding MVHR clauses.

See decision notice vs officer report and informatives vs numbered conditions.

How to read planning decision notices

When MVHR triggers sit late in the schedule, use how-to-read guides to build a discharge log before ordering plant.

Approved plans conditions may show grille locations — cross-check drawing revisions against MVHR condition text.

See how to read planning decision notice conditions and approved plans conditions.

Basement and fire safety context

Basement excavation underpinning conditions may precede MVHR duct routes in deep retrofits — sequence structural and M&E submissions.

Fire safety building safety conditions may gate smoke control — read fire guide when MVHR interacts with fire dampers.

See basement excavation underpinning conditions and fire safety building safety conditions.

Time limits and contamination

Planning permission time limit conditions may require commencement before MVHR approvals lapse — read time limit guides alongside build programme.

Contaminated land remediation conditions may appear on industrial-to-residential conversions — keep memo rows separate from ventilation clauses.

See planning permission time limits and contaminated land remediation conditions.

EV charging and travel plan adjacency

EV charging infrastructure conditions may appear on garage retrofits with MVHR plant in the same outbuilding — cite each condition number separately.

Cycle parking travel plan conditions concern sustainable travel — unrelated to MVHR unless officer text links parking moves with plant relocation.

See EV charging infrastructure conditions and cycle parking travel plan conditions.

Order a £79 sourced reading See the York sample

All guides: /guides/.