# Country Uk

> United Kingdom architectural code and regulatory reference. Covers the Building Regulations 2010 for England with Approved Documents A through S (current 2010-2025 amendments), the parallel regimes for Wales (Welsh Approved Documents), Scotland (Building (Scotland) Regulations 2004 + Scottish Technical Handbooks), and Northern Ireland (Building Regulations (NI) 2012 + Technical Booklets). Post-Grenfell amendments to AD-B (2018-2023), the Building Safety Act 2022 with Building Safety Regulator (BSR) regime for Higher-Risk Buildings (HRB), Future Homes Standard 2025 and Future Buildings Standard 2025 (next AD-L), British Standards (BS 9991 fire safety dwellings, BS 9999 fire safety non-domestic, BS 8300-1/-2 accessibility, BS 5950 legacy steel, BS EN Eurocodes with UK National Annexes, BS 8500 concrete), London Plan 2021 + Mayor's Energy Hierarchy, Local Plans + NPPF (National Planning Policy Framework 2024), LABC vs Approved Inspector, EPC + SAP 10.2 + SBEM, Energy Act 2011 MEES minimum energy efficiency stand

- Skill: `abhinavbwj/country-uk` (Agent Skill)
- Install (CLI): `npx skillmds@latest add abhinavbwj/country-uk`
- Raw SKILL.md: https://api.skillmd.com/api/skills/abhinavbwj/country-uk/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- Author: abhinavbwj (https://skillmd.com/u/abhinavbwj)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/abhinavbwj/country-uk

---


# Country: United Kingdom

Architectural code and regulatory reference for projects in England, Wales, Scotland, and Northern Ireland. Activate this skill on any UK reference, GBP currency, mention of "Approved Document"/"AD-B"/"Part L"/"Part M", BSI/British Standard, BS 8300, Building Safety Act, BSR, Grenfell-related cladding queries, NPPF, London Plan, EPC/SAP/SBEM, BREEAM, RIBA Plan of Work (UK-flavoured), MEES, or LABC.

---

## 1. Regulatory Hierarchy

UK is **Archetype C (Federal Framework + Devolved Administrations)**. Each of the four nations has its own regulatory regime, though they share substantial common ground.

### 1.1 Authority Stack

```
ENGLAND (post Building Safety Act 2022)
  Department for Levelling Up, Housing and Communities (DLUHC, renamed MHCLG 2024) -- policy
  Building Safety Regulator (BSR, within HSE) -- Higher-Risk Buildings (HRB) since Oct 2023
  Local Authority Building Control (LABC) -- local council building control
  Approved Inspectors (private competitive choice since 1985) -- now "Registered Building Inspectors" under BSA 2022
  Local Planning Authority (LPA) -- planning permission separate from building control
  Fire and Rescue Authority -- statutory consultee under Fire Safety Order 2005
  Environment Agency -- flood + water
  Historic England + Conservation Officer (if listed/heritage)
  Highways Authority

WALES
  Welsh Government (Cardiff) -- separate Building Regulations + Approved Documents (largely
    mirror England with divergence post-2018)
  Local Authority Building Control + private Approved Inspectors

SCOTLAND
  Scottish Government -- Building (Scotland) Regulations 2004 + Scottish Technical Handbooks
    (Domestic + Non-Domestic), updated regularly
  Local Authority Building Standards -- building warrant + completion certificate system
  Verifier (LA building standards officer)

NORTHERN IRELAND
  Department of Finance (NI) -- Building Regulations (NI) 2012 + Technical Booklets
  District Council Building Control (e.g., Belfast, Derry, Lisburn)
```

### 1.2 Building Safety Act 2022 (England) -- Major Reform

Following the 2017 Grenfell Tower fire, the UK enacted the **Building Safety Act 2022 (BSA 2022)**. Key changes effective from 2023:

- **Building Safety Regulator (BSR)** created within HSE -- regulates "occupation" + "construction" of Higher-Risk Buildings (HRB)
- **Higher-Risk Building (HRB) definition**: ≥18 m height OR ≥7 storeys AND contains ≥2 residential units. Hospitals + care homes during design+construction. Some non-residential captured.
- **Three Gateways**: Gateway 1 (planning -- fire statement); Gateway 2 (pre-construction -- BSR approval); Gateway 3 (occupation -- BSR approval)
- **Golden Thread** of information -- digital, accessible, version-controlled, mandated for HRBs
- **Accountable Person + Principal Accountable Person** -- duty holder regime for occupied HRB
- **Resident Engagement Strategy** mandatory
- **Mandatory Occurrence Reporting (MOR)** -- safety occurrences reported to BSR
- **Safety Case Report** -- demonstrates HRB safety, regularly updated
- **New Homes Ombudsman** -- consumer redress for new homes

### 1.3 Code Adoption Status by Nation (current 2024-2025)

| Nation | Primary Code | Energy AD | Fire AD | Accessibility AD |
|---|---|---|---|---|
| **England** | Building Regulations 2010 + ADs A-S | AD-L Vol 1 (2021) + Vol 2 (2021) -- moving to Future Homes Standard / Future Buildings Standard 2025 | AD-B Vol 1 (2019, amended 2022, 2023) + Vol 2 (2019, amended 2022) | AD-M Vol 1 (2015 + 2024 amendments) + Vol 2 (2015) + BS 8300-1/-2:2018 |
| **Wales** | Building Regulations 2010 (Welsh) + Welsh ADs | AD-L (Welsh, divergent from England 2022+) | AD-B (Welsh) | AD-M (Welsh) |
| **Scotland** | Building (Scotland) Regulations 2004 + Scottish Technical Handbook (Domestic + Non-Domestic) 2023 edition | Section 6 Energy of Tech Handbooks 2023 + Standard 6.1-6.9 | Section 2 Fire of Tech Handbooks | Section 4 Safety of Tech Handbooks + Equality Act 2010 |
| **Northern Ireland** | Building Regulations (NI) 2012 + Technical Booklets A-V | Technical Booklet F1/F2 | Technical Booklet E | Technical Booklet R |

---

## 2. England Building Regulations 2010 + Approved Documents

### 2.1 Approved Documents Map

| AD | Topic | Latest Edition |
|---|---|---|
| **AD-A** | Structure | 2013 (with 2010 + 2013 amendments) |
| **AD-B Vol 1** | Fire safety: dwellings | 2019 (amended 2020, 2022, 2023) |
| **AD-B Vol 2** | Fire safety: buildings other than dwellings | 2019 (amended 2020, 2022) |
| **AD-C** | Site preparation + resistance to contaminants/moisture | 2004 (amended) |
| **AD-D** | Toxic substances | 1992 (amended) |
| **AD-E** | Resistance to sound | 2003 (amended) |
| **AD-F Vol 1** | Ventilation: dwellings | 2021 |
| **AD-F Vol 2** | Ventilation: buildings other than dwellings | 2021 |
| **AD-G** | Sanitation, hot water safety, water efficiency | 2015 (amended) |
| **AD-H** | Drainage and waste disposal | 2015 |
| **AD-J** | Combustion appliances + fuel storage | 2010 (amended 2013) |
| **AD-K** | Protection from falling, collision, impact | 2013 |
| **AD-L Vol 1** | Conservation of fuel + power: dwellings | 2021 (interim to Future Homes Standard 2025) |
| **AD-L Vol 2** | Conservation of fuel + power: other than dwellings | 2021 (interim to Future Buildings Standard 2025) |
| **AD-M Vol 1** | Access to and use of buildings: dwellings | 2015 (M4(1) visitable, M4(2) accessible/adaptable, M4(3) wheelchair) |
| **AD-M Vol 2** | Access to and use of buildings: other than dwellings | 2015 (amended 2024) |
| **AD-N** | Glazing safety (now withdrawn -- incorporated into AD-K) | -- |
| **AD-O** | Overheating | 2021 (NEW; addresses summer overheating in new homes) |
| **AD-P** | Electrical safety: dwellings | 2013 |
| **AD-Q** | Security: dwellings | 2015 |
| **AD-R** | Physical infrastructure for high-speed electronic comms | 2016 |
| **AD-S** | Infrastructure for charging electric vehicles | 2022 (NEW; mandatory EV charging provision) |
| **AD7** | Materials and workmanship | 2013 |

### 2.2 Approved Documents Are Guidance

Critical concept: ADs are *guidance* -- they describe one way to comply. Alternative approaches are permitted if they meet the *functional requirements* of the Building Regulations. This enables performance-based fire engineering, etc.

### 2.3 Planning Permission vs Building Control

- **Planning Permission** -- Local Planning Authority (LPA) under Town and Country Planning Act 1990; addresses use, scale, design, impact
- **Building Control** -- compliance with Building Regulations 2010; addresses safety, performance, accessibility
- These are SEPARATE consents; both usually required
- **Permitted Development Rights** -- some works exempt from full planning permission
- **Prior Approval** -- some PD requires LPA prior approval (e.g., change of use)

### 2.4 NPPF + Local Plans

- **National Planning Policy Framework (NPPF)** -- last revised 2024 -- sets national planning policy
- **Local Plans** -- adopted by each LPA, set local planning policy
- **Neighbourhood Plans** -- some localities have these too
- **London Plan 2021** -- spatial development strategy for Greater London by Mayor + GLA; significant policy weight in London applications

---

## 3. Fire Safety (AD-B Post-Grenfell)

### 3.1 AD-B Amendments

After Grenfell (June 2017), AD-B has been amended significantly:

| Year | Change |
|---|---|
| 2018 | Combustible cladding **ban** on buildings ≥18 m (residential, hotels, hospitals, schools) -- Regulation 7(2) of Building Regulations 2010 |
| 2020 | Extended ban to buildings ≥11 m for residential |
| 2022 | AD-B amendments: stricter compartmentation, sprinkler triggers, multi-storey egress |
| 2023 | Second staircase requirement for residential buildings ≥18 m (from 2026 transition) -- consultation/implementation |

### 3.2 Means of Escape

**AD-B Vol 1 (Dwellings) -- key parameters:**

| Threshold | Requirement |
|---|---|
| Flat in building ≤4.5 m above ground | Single escape route OK |
| Flat in building 4.5-11 m | Lobby + single stair OK with conditions |
| Flat in building 11-18 m | Lobby + single stair + AOV + protected stair |
| Flat in building >18 m | Sprinklers throughout flats + protected stair + lobby; second stair from 2026 (>18 m new build) |
| Flat in building >30 m | Sprinklers + protected stair + lobby + second stair generally needed; smoke control engineered |

**AD-B Vol 2 (Non-Domestic) -- key parameters:**

| Parameter | Value |
|---|---|
| Travel distance from any point to nearest storey exit | per Table 2.1: B 18-25 m (one-direction), 45-60 m (two-direction) |
| Max corridor length with no fire-resistant separation | 12 m |
| Min stair width | 1.1 m up to 220 occupants per stair; capacity = 5 mm/person per m of stair width |
| Min door clear width | 800 mm (single leaf), 1500 mm (double leaf escape) |
| Max travel distance assembly (sprinklered) | 32 m (one-direction), 64 m (two-direction) |
| Max travel distance B (sprinklered) | 25 m one-direction, 45 m two-direction |

### 3.3 Compartmentation

- **Maximum compartment size** per AD-B Vol 2 Table 12 (varies by building type + sprinklers)
- **Fire-resistance periods**: 30-min (FD30) up to 4-hour for compartment walls/floors
- **External walls** (post-Grenfell): if building ≥11 m residential, ≥18 m other, all elements of external wall (excl. window frames, doors) must be Class A2-s1, d0 OR Class A1 per EN 13501-1

### 3.4 BS 9991:2024 + BS 9999:2017

Alternative performance-based routes:
- **BS 9991:2024** -- Fire safety in the design, management and use of residential buildings (replaces BS 9991:2015)
- **BS 9999:2017** -- Fire safety in the design, management and use of non-domestic buildings
- These permit fire engineering approaches not covered by AD-B

### 3.5 BS 7974:2019

- **Application of fire safety engineering principles** to design of buildings
- 8 sub-system PDs (Published Documents) covering specific aspects: initial fire+life, smoke, structural fire, etc.

---

## 4. Energy Code

### 4.1 AD-L (Conservation of Fuel and Power)

**AD-L Vol 1 (2021) -- Dwellings:**
- Target Fabric Energy Efficiency (TFEE) per dwelling type
- SAP 10.2 calculation methodology (TEr -- Target Emission Rate)
- Fabric U-values minimum standards
- Building services efficiency standards

**AD-L Vol 2 (2021) -- Non-Domestic:**
- SBEM calculation methodology (TBER -- Target Building Emission Rate)
- Fabric U-values minimum standards
- HVAC efficiency standards (FE -- Building Fabric Efficiency)

### 4.2 Future Homes Standard 2025 + Future Buildings Standard 2025

England transition pathway:
- **From 2025**: new homes built to FHS standards -- estimated 75-80% lower carbon than 2013 stock; heat pumps default; PV expected; no on-site combustion of fossil fuels
- **From 2025**: new non-domestic buildings to FBS standards -- similar carbon reduction trajectory
- Interim AD-L 2021 already requires 31% improvement (homes) over 2013 baseline

### 4.3 AD-L U-Value Limits (2021)

| Element | Notional Building Limit (W/m2K) | Limiting Backstop (W/m2K) |
|---|---|---|
| Wall (dwellings new) | 0.18 | 0.26 |
| Roof (dwellings new) | 0.11 | 0.16 |
| Ground floor (dwellings) | 0.13 | 0.18 |
| Window/door (dwellings) | 1.2 | 1.4 (window), 1.4 (door) |
| Wall (non-dom new) | 0.18 | 0.26 |
| Roof (non-dom new) | 0.16 | 0.18 |
| Window (non-dom) | 1.6 | 2.2 |

### 4.4 SAP 10.2 + SBEM

- **SAP 10.2** -- Standard Assessment Procedure for dwellings -- prescribes the calculation methodology for new homes' energy performance (mandatory for Building Regs + EPC)
- **SBEM** -- Simplified Building Energy Model for non-domestic
- **EPC (Energy Performance Certificate)** -- required for all new buildings + sales/lettings; band A-G

### 4.5 MEES -- Minimum Energy Efficiency Standards

- **Privately rented domestic** properties: EPC E minimum since 2018; minimum **EPC C from 2030** (proposed)
- **Privately rented commercial** properties: EPC E minimum since 2018 (existing leases) and 2023 (continued leases); proposed EPC C by 2027, EPC B by 2030

### 4.6 BREEAM

- **BREEAM New Construction SD5078 (2024 update)** -- UK's dominant non-domestic green rating
- **Home Quality Mark** (HQM) -- domestic; less common than EPC
- Ratings: Acceptable, Pass, Good, Very Good, Excellent, Outstanding
- Many local plans require BREEAM Excellent minimum (e.g., London Plan)

### 4.7 London Plan 2021 Energy Hierarchy

For Greater London projects:
1. Be Lean -- reduce energy demand (passive + efficient services)
2. Be Clean -- use heat networks + decentralised supply where possible
3. Be Green -- maximise renewables
4. Be Seen -- monitor + manage performance

Plus: **Net Zero Carbon** target for new buildings (operational + embodied), Whole Life-Cycle Carbon Assessment for major referable applications.

---

## 5. Accessibility

### 5.1 AD-M Three-Tier System (Dwellings)

| Tier | Standard | When Required |
|---|---|---|
| **M4(1)** | Visitable | Minimum for ALL new homes -- step-free to entrance, accessible WC at entrance level, wider doors |
| **M4(2)** | Accessible and Adaptable | Required by many Local Plans (London, Manchester etc.) for percentage of new homes |
| **M4(3)** | Wheelchair User Dwellings | Subdivided: M4(3)(2)(a) Adaptable (most common; for future fit-out), M4(3)(2)(b) Accessible (fitted out at construction). Required for percentage of homes in many Local Plans |

London Plan 2021: 90% M4(2), 10% M4(3) for new residential development.

### 5.2 BS 8300-1:2018 + BS 8300-2:2018

Detailed technical reference superior to AD-M for non-domestic:
- **BS 8300-1** -- External environment (pavements, kerbs, public realm, parking)
- **BS 8300-2** -- Internal environment (entries, circulation, toilets, lifts)

### 5.3 Key Dimensions

| Element | AD-M / BS 8300 |
|---|---|
| Accessible route | 1.5 m (BS 8300-1); 1.0 m absolute min |
| Door clear width (principal entrance) | 1000 mm (M4(1) homes); 900 mm internal |
| Ramp gradient | 1:12 (up to 5 m run); 1:15 (5-10 m); 1:20 (>10 m); landings every 10 m |
| Cross slope | <= 1:50 |
| Lift cabin -- minimum (Type 1) | 1100 x 1400 mm |
| Lift cabin -- preferred (Type 2) | 1400 x 1600 mm (BS 8300) |
| Accessible WC | 1500 x 2200 mm (peninsular layout); grab rails left + right |
| Accessible parking | 4.8 m + 1.2 m aisle (2.4 + 2.4 layout); covered preferred |
| Tactile paving | Per DfT Inclusive Mobility 2021 + BS 7997 |

### 5.4 Equality Act 2010

UK accessibility law goes beyond Building Regs:
- **Reasonable adjustments** duty for service providers + employers
- **Public sector equality duty**
- Enforcement via **Equality and Human Rights Commission (EHRC)** + tribunals

### 5.5 Public Realm

- **Inclusive Mobility 2021** (DfT) -- public realm/streets accessibility
- **Manual for Streets / Manual for Streets 2** -- design standards
- **TSRGD** (Traffic Signs Regulations) -- signage

---

## 6. Structural and Loads (Eurocodes with UK National Annexes)

### 6.1 Eurocode Suite as Adopted in UK

| Eurocode | Topic | UK NA Status |
|---|---|---|
| **BS EN 1990:2002+A1:2005** | Basis of structural design | UK NA published |
| **BS EN 1991** (Parts 1-1 to 4) | Actions | UK NAs published; key: 1-1 (general), 1-3 (snow), 1-4 (wind), 1-5 (thermal), 1-7 (accidental) |
| **BS EN 1992** | Concrete | UK NA |
| **BS EN 1993** | Steel | UK NA |
| **BS EN 1994** | Composite | UK NA |
| **BS EN 1995** | Timber | UK NA |
| **BS EN 1996** | Masonry | UK NA |
| **BS EN 1997** | Geotechnical | UK NA |
| **BS EN 1998** | Seismic | UK NA -- low seismicity in UK; often waived |
| **BS EN 1999** | Aluminium | UK NA |

### 6.2 Legacy British Standards (still in some use)

- **BS 5950** -- Steel (superseded by BS EN 1993 + UK NA, but some legacy projects)
- **BS 8110** -- Concrete (superseded by BS EN 1992 + UK NA)
- **BS 5628** -- Masonry (superseded by BS EN 1996 + UK NA)
- **BS 8004** -- Foundations (still in use as referenced)
- **BS 8500-1, BS 8500-2** -- Concrete specification (companion to BS EN 1992)
- **BS 8102:2022** -- Waterproofing (active)

### 6.3 Wind in UK

- BS EN 1991-1-4 + UK NA: **Fundamental basic wind velocity Vb,0** = 21-29 m/s across UK (mapped)
- Highest in Scotland north + west (Stornoway, Lerwick), lowest in southeast England
- 50-year return; with directional, season, orography, gust factor modifiers

### 6.4 Snow in UK

- BS EN 1991-1-3 + UK NA: ground snow load **sk** = 0.30 - 0.90 kN/m2 depending on region + altitude
- Higher in Scotland highlands; relatively modest elsewhere
- Altitude factor crucial above 100 m elevation

---

## 7. Devolved Nations -- Quick Reference

### 7.1 Scotland

**Building (Scotland) Regulations 2004 (as amended)** + **Scottish Technical Handbooks** (Domestic + Non-Domestic, updated 2023):
- Section 1 Structure
- Section 2 Fire (Scottish equivalent of AD-B; more stringent in some areas, e.g., sprinklers in homes ≥18 m + most flats above 11 m)
- Section 3 Environment (resistance to noise/moisture/etc.)
- Section 4 Safety (incl. accessibility)
- Section 5 Noise
- Section 6 Energy (parallel to AD-L)
- Section 7 Sustainability

Process: **Building Warrant** before construction; **Completion Certificate** before occupation. Verifier (LA-appointed) checks compliance.

### 7.2 Wales

Welsh Government issued its own Approved Documents from 2018+ with divergence from England. Key:
- **Welsh AD-L 2022** -- on parallel trajectory to FHS but distinct
- **Welsh AD-B** -- post-Grenfell amendments aligned with England
- **Welsh Future Homes Standard** -- under development

### 7.3 Northern Ireland

**Building Regulations (NI) 2012 (SR 2012/192)** + **Technical Booklets**:
- A Interpretation
- B Materials
- C Site preparation
- D Structure
- E Fire safety
- F Conservation of fuel + power
- G Sound
- H Stairs/ramps + protection from falling
- J Solid fuel
- K Ventilation
- L Combustion appliances + fuel storage
- M Sanitary appliances + plumbing
- N Drainage
- P Sanitary
- Q Sanitary
- R Access + use (accessibility)
- V Glazing

NI typically lags England by 12-24 months on equivalent provisions.

---

## 8. Practical Workflows

### 8.1 England Building Project Workflow (non-HRB)

1. **Pre-application planning advice** -- LPA pre-app
2. **Planning application** (Outline or Full) -- 8/13/16-week decision
3. **Discharge planning conditions** post-permission
4. **Building Regulations submission**: Full Plans OR Building Notice OR Initial Notice (Approved Inspector)
5. **Construction phase inspections** at key stages
6. **Completion certificate** issued
7. **EPC + as-built confirmation** before occupation

### 8.2 England HRB Workflow (post-BSA 2022)

1. **Pre-application** with LPA + early engagement with BSR
2. **Planning application** with Fire Safety Statement (Gateway 1)
3. **Pre-construction submission to BSR (Gateway 2)** -- detailed design, safety case principles, competent person regime evidence; BSR has 12-week determination, can extend
4. **Construction**: Mandatory Occurrence Reporting active; Golden Thread maintained
5. **Completion submission to BSR (Gateway 3)** -- safety case + occupation conditions
6. **Occupation**: Principal Accountable Person duties + Resident Engagement Strategy + ongoing Safety Case Reviews

### 8.3 London Major Application

For schemes "referable to the Mayor" (typically >150 residential units, or buildings >30 m, others):
1. LPA processes but Mayor of London has direct call-in powers
2. Whole Life-Cycle Carbon Assessment required
3. Net Zero Carbon target (or carbon offset payment via Local Plans)
4. Air Quality Neutral assessment

---

## 9. Quick Numeric Reference

| Parameter | Value | Source |
|---|---|---|
| Floor-to-floor residential | 2.7-3.0 m | AD-K + RIBA Spec; min 2.4 m clear |
| Floor-to-floor office | 3.6-4.2 m | BCO Guide to Specification 2019; 2.7 m clear |
| Stair max riser | 220 mm (private dwellings); 180 mm (other) | AD-K Table 1.1 |
| Stair min going | 220 mm (private); 250 mm (other) | AD-K |
| Min protected corridor width | 1.0 m, 1.2 m if used by escape | AD-B + AD-M |
| Wall U-value (new dwelling) | 0.18 W/m2K limit | AD-L Vol 1 2021 |
| Roof U-value (new dwelling) | 0.11 W/m2K limit | AD-L Vol 1 2021 |
| Window U-value (new dwelling) | 1.2 W/m2K limit | AD-L Vol 1 2021 |
| Travel distance (sprinklered office) | 25 m one-direction, 45 m two-direction | AD-B Vol 2 Table 2.1 |
| Refuge area (HRB) | 0.7 m2 wheelchair + space + comms | AD-B + BS 9999 |
| Cladding (>=11 m res, >=18 m other) | Class A1/A2-s1, d0 EN 13501-1 | Reg 7(2) Building Regs 2010 + AD-B 2018+ |
| Accessible WC | 1500 x 2200 mm | AD-M / BS 8300 |
| Wind Vb,0 (London) | 22 m/s | UK NA to BS EN 1991-1-4 |
| Wind Vb,0 (Glasgow) | 25 m/s | Same |
| Ground snow sk (London) | 0.4 kN/m2 | UK NA to BS EN 1991-1-3 |

---

## 10. Application Workflow

1. **Identify nation** (England, Wales, Scotland, NI).
2. **Identify if HRB** under BSA 2022 (England) -- triggers BSR regime.
3. **Identify whether listed building / heritage / conservation area** -- additional consents.
4. **Apply Building Regulations** through ADs (England/Wales) / Technical Handbook (Scotland) / Technical Booklets (NI).
5. **Apply Eurocodes + UK NAs** for structural; check seismic waiver.
6. **Apply AD-L / Section 6 / Tech Booklet F** for energy.
7. **Apply AD-B / Section 2 / Tech Booklet E** for fire.
8. **Apply AD-M + BS 8300 / Equality Act / Tech Booklet R** for accessibility.
9. **Apply Local Plan / NPPF / London Plan** for planning.
10. **Cite clauses**: "AD-B Vol 2 (2019, amended 2022) Section 2.1, Table 2.1"; "BS 9991:2024 Section 7"; "AD-L Vol 1 2021 Section 4.2"; "London Plan 2021 Policy SI 2"; "Building Safety Act 2022 Section 65"; "BS EN 1991-1-4:2005+A1:2010 + UK NA"

---

## 11. Authoritative Sources

- **DLUHC/MHCLG (UK Gov Housing)** -- gov.uk/government/organisations/ministry-of-housing-communities-and-local-government
- **HSE Building Safety Regulator** -- hse.gov.uk/building-safety
- **BSI (British Standards Institution)** -- bsigroup.com -- BS suite
- **Approved Documents (England)** -- gov.uk/government/collections/approved-documents
- **Welsh Government Building Regs** -- gov.wales/building-regulations
- **Scottish Government Building Standards** -- gov.scot/policies/building-standards
- **NI Department of Finance** -- finance-ni.gov.uk/topics/building-regulations
- **NPPF** -- gov.uk/government/publications/national-planning-policy-framework--2
- **London Plan** -- london.gov.uk/programmes-strategies/planning/london-plan
- **CIBSE** -- cibse.org -- Guides A/B/D/L (lighting)/AM10 etc.
- **RIBA** -- riba.org -- Plan of Work 2020, briefing standards
- **BRE** -- bregroup.com -- BREEAM, SAP 10.2, SBEM
- **MEES guidance** -- gov.uk/government/publications/the-non-domestic-private-rented-property-minimum-standard

---

*Cross-references: load `building-codes` for general fire/egress concepts (which AD-B refines for UK); `fire-life-safety` for general fire engineering (then UK BS 9991/9999); `accessibility-design` for global frameworks then BS 8300/AD-M; `building-sustainability` for BREEAM + Passive House comparison + Whole Life Carbon; `building-envelope` for UK climate (AD-O overheating + AD-L envelope); `structural-systems` for Eurocode-based design.*