--- title: "Side Boundary Hedge (90° Window Rule) [2026 UK Law & BRE 470] — Statutory Rules & Calculator | HedgeHeight.co.uk" source_url: "https://hedgeheight.co.uk/scenarios/side-boundary-hedge-at-right-angles-to-window" retrieved_by: "AnswerRail Edge Engine v1.1.0-parity-v20 (https://answerrail.com)" level_of_detail: "standard" token_payload_reduction: "87.5%" raw_html_bytes: 189689 compiled_body_bytes: 23762 entities_extracted: 12 currency_recall_static_html: "100%" monitored_currency_tokens: 41 link_recall_static_html: "100%" monitored_content_links: 11 omitted_dynamic_states: ["non_default_tab_panels", "volume_slider_tiers"] conversion_notes: "Origin renders alternate tabs and volume pricing sliders via client-side JavaScript; serving default static AST state." rfc_compliance: "RFC 9110" last_verified_at: "2026-10-17T16:03:30.131Z" cache_age_seconds: 0 origin_cache_control: "public, max-age=0, must-revalidate" --- > **Canonical Source:** [https://hedgeheight.co.uk/scenarios/side-boundary-hedge-at-right-angles-to-window](https://hedgeheight.co.uk/scenarios/side-boundary-hedge-at-right-angles-to-window) > > *Side Party Boundary Hedge at 90° Right Angles to Rear Patio Doors. Check exact BRE Report 470 Action Hedge Height calculations, Part 8 Anti-social Behaviour Act 2003 rules, and amicable resolution steps.* ### Organization: HedgeHeight.co.uk — UK Statutory High Hedges Guidance Authority | Field | Value | | :--- | :--- | | **Organization** | HedgeHeight.co.uk — UK Statutory High Hedges Guidance Authority | | **Official Website** | https://hedgeheight.co.uk | ### Entity: HedgeHeight.co.uk — UK High Hedge & BRE 470 Calculator | Property | Detail | | :--- | :--- | | **Type** | WebSite | | **Name** | HedgeHeight.co.uk — UK High Hedge & BRE 470 Calculator | ### Entity: HedgeHeight.co.uk — Official BRE Report 470 Action Hedge Height Calculator | Property | Detail | | :--- | :--- | | **Type** | WebApplication,SoftwareApplication | | **Name** | HedgeHeight.co.uk — Official BRE Report 470 Action Hedge Height Calculator | | **Description** | Official statutory mathematics engine implementing Building Research Establishment (BRE) Report 470 "Hedge height and light loss" for UK residential property disputes under Part 8 Anti-social Behaviour Act 2003.... | ### Step-by-Step Procedure: How to Calculate UK Action Hedge Height Under BRE Report 470 > **Objective:** Follow the official 4-step statutory procedure used by UK council tree officers to calculate the maximum lawful height of a boundary hedge blocking sunlight or daylight. #### 1. Verify Statutory Qualification (2+ Evergreen Trees Over 2.0m) Confirm the hedge consists of a line of 2 or more adjacent evergreen or semi-evergreen trees or shrubs rising above 2.0 metres from ground level (or deciduous trees in Scotland under the 2013 Act). #### 2. Calculate BRE Section 4 Garden Action Height Measure the Effective Garden Depth (in metres) perpendicular from the boundary hedge and multiply by the BRE Table 1 compass orientation factor (0.25 for South/SW up to 0.65 for North), then apply boundary setback (>1m) and slope adjustments. #### 3. Calculate BRE Section 5 Habitable Window Action Height Measure the horizontal distance (D) from the nearest affected living room, kitchen, or bedroom window to the hedge. Apply (D ÷ 2) + 1.0m for directly opposite windows, (2D ÷ 3) + 1.0m for 45° angled windows, or D + 1.0m for 90° side windows. #### 4. Apply Governing Minimum, 2.0m Statutory Floor & Species Growth Margin Take the lower of the Garden Action Height and Window Action Height (subject to the 2.0m statutory minimum floor), then deduct the species annual growth allowance (0.6m–1.0m) to obtain the Recommended Trim Height. ### Entity: Anti-social Behaviour Act 2003 Part 8 (High Hedges) | Property | Detail | | :--- | :--- | | **Type** | Legislation | | **Name** | Anti-social Behaviour Act 2003 Part 8 (High Hedges) | ### Entity: High Hedges (Scotland) Act 2013 | Property | Detail | | :--- | :--- | | **Type** | Legislation | | **Name** | High Hedges (Scotland) Act 2013 | ### Entity: High Hedges Act (Northern Ireland) 2011 | Property | Detail | | :--- | :--- | | **Type** | Legislation | | **Name** | High Hedges Act (Northern Ireland) 2011 | ### Entity: 2026 UK Local Authority High Hedge Part 8 Complaint Fee & BRE Report 470 Action Height Dataset (60 Councils) | Property | Detail | | :--- | :--- | | **Type** | Dataset | | **Name** | 2026 UK Local Authority High Hedge Part 8 Complaint Fee & BRE Report 470 Action Height Dataset (60 Councils) | | **Description** | Comprehensive open statutory dataset of 60 UK Local Authority high hedge complaint filing fees (£350–£993), refund policies, and BRE Report 470 orientation multipliers under Part 8 Anti-social Behaviour Act 2003.... | ### Frequently Asked Questions (FAQ) **Q: What is the statutory legal height for a hedge in the UK?** > A: There is no fixed 2-metre blanket height cap in UK law. Under Part 8 of the Anti-social Behaviour Act 2003, a hedge must consist of two or more evergreen or semi-evergreen trees or shrubs rising over 2.0 metres before a council can accept a complaint. The council then calculates the exact Action Hedge Height using BRE Report 470 formulas based on garden depth, compass orientation, and window distance. **Q: How does a council calculate allowable hedge height under BRE Report 470?** > A: Under BRE Report 470 "Hedge height and light loss", tree officers calculate two figures: (1) Garden Action Height = Effective Garden Depth × Table 1 Compass Orientation Factor (0.25 for South/SW up to 0.65 for North) ± setback and slope adjustments; (2) Window Action Height = (Distance to Window ÷ 2) + 1.0m for direct opposite windows. The council enforces whichever figure is lower, but cannot order a hedge reduced below the 2.0m statutory minimum floor. **Q: Why are 42% of council high hedge complaints rejected before a site visit?** > A: Under Section 68(2) of the Anti-social Behaviour Act 2003, councils must refuse to proceed if the complainant cannot provide written evidence of reasonable prior steps taken to resolve the dispute amicably over the preceding 8–12 weeks, or if the hedge is a single isolated tree, deciduous (in England & Wales), or bamboo. **Q: Does a formal council high hedge complaint have to be declared when selling a house (TA6 Form)?** > A: Yes. Filing an official Part 8 council complaint creates a formal neighbour dispute and, if a Remedial Notice is issued, registers a binding statutory Local Land Charge. Both the complainant and the hedge owner must disclose formal complaints on the Law Society TA6 Property Information Form when selling their property. **Q: Can I cut my neighbour’s high hedge down myself?** > A: No. Under common law (Lemmon v Webb), you may prune branches that overhang your legal boundary line vertically up to the boundary plane, but you cannot reduce the top height of a hedge rooted on your neighbour’s land. Topping a neighbour’s hedge without written permission constitutes criminal damage under the Criminal Damage Act 1971. **Q: How much does a council high hedge complaint cost compared to a tree surgeon?** > A: UK local authorities charge between £320 and £993 to investigate a High Hedges complaint (e.g. Birmingham charges £350, Cornwall charges £993). In England and Wales, this fee is 100% non-refundable and does not pay for cutting the hedge. Hiring an insured local tree surgeon (£180–£550 typical) or splitting the cost 50/50 with your neighbour is usually faster and cheaper than the council fee alone. **Q: Does bird nesting season stop high hedge cutting in the UK?** > A: Yes. Under Section 1 of the Wildlife and Countryside Act 1981, it is a criminal offence to intentionally damage or destroy an active wild bird nest. The primary nesting season runs from 1 March to 31 August, during which councils suspend Remedial Notice compliance deadlines unless an arborist confirms zero nesting activity. **Q: Is bamboo or a Beech hedge covered by the High Hedges Act?** > A: Bamboo is botanically a giant grass (Poaceae) and is excluded from Part 8 High Hedges complaints in England and Wales (actionable instead under private nuisance). Beech and Hornbeam are deciduous and excluded in England and Wales unless mixed with evergreens, but ARE covered in Scotland under the High Hedges (Scotland) Act 2013. ### Frequently Asked Questions (FAQ) **Q: What is the statutory UK legal rule for: Side Boundary Hedge (90° Window Rule)?** > A: BRE Report 470 Section 5.3 (Hedge at Right Angles to Window Wall). **Q: What is the recommended action plan for Side Boundary Hedge (90° Window Rule)?** > A: Measure horizontally from the centre of your closest habitable window or glazed patio door to the boundary fence. BRE Section 5.3 Side Window # Side Party Boundary Hedge at 90° Right Angles to Rear Patio Doors For a hedge separating two semi-detached or terraced gardens at right angles to your rear windows, the Action Height is (Distance from Window Centre to Boundary + 1.0m) along a specific length from the house wall. ## Statutory Legal Rule & Standard **Official Reference:**BRE Report 470 Section 5.3 (Hedge at Right Angles to Window Wall). UK local planning authorities and the Planning Inspectorate strictly apply this statutory standard. Any formal High Hedge Remedial Notice or Planning Appeal decision will be founded directly on this geometry. ## Recommended Step-by-Step Action **Recommended Resolution Strategy:**Measure horizontally from the centre of your closest habitable window or glazed patio door to the boundary fence. Taking this structured route satisfies Section 68(2) 'reasonable prior steps' and ensures you avoid wasting non-refundable council fees (£320–£993). ## Interactive BRE 470 Calculator for This Scenario Pre-loaded with this scenario's default parameters (Orientation: S, Depth: 11m, Height: 4m). Adjust dimensions to match your exact garden. [01Role & CouncilRole, Preset & Council](#step-1)[02Hedge & GardenHedge & Garden Sizes](#step-2)[03BRE 470 VerdictBRE 470 Verdict & Plan](#step-3)[04Legal PacksLegal Packs & Quotes](#resolution-funnel) STEP 1 OF 4 • PROPERTY ROLE, SCENARIO & COUNCIL Part 8 Anti-social Behaviour Act 2003 01 ## Select Your Property Role, Species & Local Authority Choose whether you are the neighbour losing light or the hedge owner checking your legal defence limit: 🌞 Complainant: Hedge Blocking My LightClaimant🛡️ Hedge Owner: Neighbour Threatened ActionDefence 1-Click Real-World Dispute PresetsTap a scenario to auto-load BRE 470 dimensions 5m South Leylandii Blocking Patio 5.0m • 10m EGD • South (0.25×) Hedge Blocking Living Room Window 4.2m Laurel • 6m Window (0°) Hedge Owner Defence Check 3.8m Cedar • 14m North (0.65×) Overgrown Boundary Bamboo Check 4.0m Bamboo • 9m SW Boundary UK JurisdictionStatutory Regime England & Wales (Part 8 ASBA 2003)Scotland (2013 Act - Deciduous Covered)Northern Ireland (2011 Act) Hedge Species+90cm/yr Leylandii (Leyland Cypress) (90cm/yr)Western Red Cedar (60cm/yr)Cherry Laurel (Common Laurel) (60cm/yr)English Yew (30cm/yr)Garden Privet (50cm/yr)Monterey Cypress (Macrocarpa) (80cm/yr)Common Beech / Copper Beech (45cm/yr)European Hornbeam (45cm/yr)Photinia Red Robin (50cm/yr)New Zealand Broadleaf (Griselinia) (55cm/yr)Holm Oak (Evergreen Oak) (45cm/yr)Clumping & Running Bamboo (120cm/yr) Local Council Birmingham City Council (Fee: £350)Leeds City Council (Fee: £396)Surrey Heath Borough Council (Fee: £480)London Borough of Bromley (Fee: £500)Sevenoaks District Council (Fee: £650)Cornwall Council (Fee: £993)Manchester City Council (Fee: £400)Bristol City Council (Fee: £510)City of Edinburgh Council (Fee: £401)Glasgow City Council (Fee: £450)Cardiff Council (Fee: £320)Belfast City Council (Fee: £360)Cheshire East Council (Fee: £550)Guildford Borough Council (Fee: £500)Buckinghamshire Council (Fee: £620)Dorset Council (Fee: £540)Winchester City Council (Fee: £550)Sheffield City Council (Fee: £420)Nottingham City Council (Fee: £400)London Borough of Barnet (Fee: £550)Elmbridge Borough Council (Fee: £560)Waverley Borough Council (Fee: £525)Reigate & Banstead Borough Council (Fee: £500)Mole Valley District Council (Fee: £490)Tandridge District Council (Fee: £510)Woking Borough Council (Fee: £485)St Albans City & District Council (Fee: £550)Dacorum Borough Council (Fee: £475)Hertsmere Borough Council (Fee: £515)Tunbridge Wells Borough Council (Fee: £580)Maidstone Borough Council (Fee: £495)Tonbridge & Malling Borough Council (Fee: £520)Canterbury City Council (Fee: £460)Royal Borough of Windsor & Maidenhead (Fee: £590)Wokingham Borough Council (Fee: £530)Reading Borough Council (Fee: £450)West Berkshire Council (Fee: £510)London Borough of Richmond upon Thames (Fee: £600)London Borough of Wandsworth (Fee: £550)London Borough of Croydon (Fee: £520)London Borough of Ealing (Fee: £500)London Borough of Hillingdon (Fee: £510)London Borough of Enfield (Fee: £495)London Borough of Sutton (Fee: £480)Royal Borough of Kingston upon Thames (Fee: £540)Cheshire East Council (Fee: £490)Cheshire West and Chester Council (Fee: £465)Trafford Council (Fee: £450)Stockport Metropolitan Borough Council (Fee: £440)Manchester City Council (Fee: £400)Liverpool City Council (Fee: £390)Wirral Council (Fee: £435)Solihull Metropolitan Borough Council (Fee: £470)Warwick District Council (Fee: £460)Stratford-on-Avon District Council (Fee: £485)Bristol City Council (Fee: £475)Bath & North East Somerset Council (Fee: £510)Bournemouth, Christchurch and Poole (BCP) Council (Fee: £525)Wiltshire Council (Fee: £500)Cornwall Council (Fee: £450) ↓ Step 2: Hedge & Garden Dimensions STEP 2 OF 4 • HEDGE DIMENSIONS, COMPASS ORIENTATION & GARDEN DEPTH ### Surveyor Measurement Workbench Enter physical measurements or tap a standard UK house landmark below to estimate height without a tape measure. #### Hedge Height & Landmark EstimatorRow & Height Barrier Formation (Trees in a Continuous Line) 2+ Trees (Row/Barrier) Qualifies under Part 8 1 Single Isolated Tree Statutorily Exempt Current Hedge Height (Base to Crown)4.0m (13 ft) 1.5m (Exempt)4.0m8.0m12.0m No tape measure? Tap a standard UK house landmark: Fence Top 2.0m / 6ft 7in Patio Door 2.7m / 8ft 10in 1st Flr Sill 4.5m / 14ft 9in Roof Gutter 6.0m / 19ft 8in Hedge Run Length Along Boundary12m (39 ft) #### Garden Orientation & DepthBRE Table 1 Compass Orientation (Looking FROM Garden TOWARDS Hedge) S 0.25× SW 0.25× SE 0.3× W 0.35× E 0.4× NW 0.5× NE 0.55× N 0.65× **S Boundary (0.25× factor):** Blocks direct midday sun across the garden (strictest BRE multiplier: 0.25) Effective Garden Depth (Boundary to Hedge)11.0 metres 3.0m (Patio)10.0m20.0m30.0m+ Raw Section 4 Garden Calculation:11.0m × 0.25 = 2.75m Advanced BRE 470 Surveyor Adjustments (Setback, Slope, Window Distance & TPO) 1\. Hedge Setback from Boundary (BRE s.4.3.1)0.0m If hedge stems sit \>1.0m back from the boundary line, the setback distance is added. 2\. Ground Slope Difference at D/3 (BRE s.4.3.2)0.0m Positive if the neighbour's hedge sits on a raised retaining wall or bank above your lawn. 3\. Habitable Window Distance to Hedge (Section 5)10.0m Distance from your nearest living room, kitchen, or bedroom window to the hedge. 4\. Conservation Area or Tree Preservation Order (TPO) Requires a 6-week Section 211 planning notice to Birmingham City Council prior to cutting. ↓ Step 3: BRE 470 Verdict & Blueprint STEP 3 OF 4 • OFFICIAL BRE 470 STATUTORY VERDICT & BLUEPRINT Breaches Action HeightPart 2003 Your Current Hedge4.00m(13ft 1in) BRE 470 Action Height Limit2.75m(9ft 0in max) Recommended Trim Target2.00m(6ft 7in trim target) **Complainant Assessment:** The neighbour's hedge currently rises 4.00m, which is **1.25m above the statutory Action Hedge Height**. To maintain light for 12 months without further complaints, an arborist should reduce the hedge by **2.00m** down to the Recommended Trim Height of **2.00m**. Panoramic Architectural Sun-Path & Shadow Elevation BlueprintGarden Depth: 11m • Facing S Current Garden Shadow5.8m(53% of garden) Shadow After BRE 470 Trim2.9m(at 2.0m limit) Direct Sunlight Recovered+2.9msunny lawn/patio Current Hedge Action Height Threshold Recommended Trim Line 5-Point Council Victory ScorecardPart 8 Admissibility 1\. Evergreen / Semi-Evergreen (s.66)PASS (Evergreen) 2\. Continuous Row of 2+ Trees (s.66)PASS (5+ Trees) 3\. Above 2.0m Statutory FloorPASS (4.0m \> 2.0m) 4\. BRE Report 470 Light Loss TestBREACH (+1.25m over) 5\. Section 68(2) 28-Day Written LogMANDATORY (£350 Fee Gate) Copy BRE 470 Summary[Step 4: Legal Packs & Quotes](#resolution-funnel) BRE Report 470 Mathematical Audit Trail Section 4 Garden Formula:11m × 0.25 = 2.75m Corrected Garden Action Height:2.75m Section 5 Window Action Height:11m Governing Constraint:garden Statutory 2.0m Floor Applied:2.75m Species Allowance (Leylandii):\-0.75m (Capped at 2.00m Floor) **Conifer Die-Back Risk:** Leylandii (Leyland Cypress) (Cupressocyparis × leylandii) does not reliably regenerate from bare brown wood if reduced by more than one-third in a single season. Under ODPM guidance "High Hedges Complaints: Prevention and Cure", councils and NPTC arborists assess stem vitality before topping to avoid killing the screen. **Statutory Compliance:** AUTUMN / WINTER CUTTING WINDOW ACTIVE: October to February is outside the peak UK wild bird nesting season (March–August) under the Wildlife and Countryside Act 1981, making now the optimal legal and biological window for heavy hedge height reductions. ↓ Step 4: Legal Evidence Packs & Arb Quotes STEP 4 OF 4 • AMICABLE NEIGHBOUR RESOLUTION & STATUTORY NOTICE PACKS ### Your 3-Step Resolution Plan for Birmingham City Council Why 68% of UK homeowners resolve high hedge disputes in 14 days without paying Birmingham City Council's £350 non-refundable fee or triggering a Law Society TA6 house sale dispute record. Step 1 & 2: Pre-Action Notice & Certified DossierFrom £9.99 Birmingham City Council automatically dismisses over 42% of high hedge complaints under Section 68(2) if you have not first served formal written notice with mathematical evidence. Choose your pack level: Tier A: £9.99Step 1 1-Page Section 68(2) Notice Quick de-escalation notice citing exact 2.75m limit & 50/50 split offer. Tier B: £24.99Most Popular Complete 4-Page Dossier BRE 470 math worksheet, 28-day notice/defence, photo log & NPTC arborist scope of works. Live Document Address Personalisation Your Property Address: Neighbour's Property Address: Use neutral "To The Occupier" header (avoids personal confrontation) 1\. BRE Certificate2\. s.68(2) Notice3\. 28-Day Log4\. 50/50 Slip STATUTORY COMPLIANCE SCHEDULE • HM GOVERNMENT GUIDANCE PART 8 ANTI-SOCIAL BEHAVIOUR ACT 2003 • BRE REPORT 470 SCHEDULE Enforcing Authority: Birmingham City Council (Planning Enforcement & High Hedges Team) Action Limit 2.75m (9ft 0in) TO: The Homeowner, 16 Oak Avenue FROM: 14 Oak Avenue SCHEDULE 1: CERTIFIED BRE 470 LIGHT LOSS ASSESSMENT This statutory assessment establishes the maximum lawful Action Hedge Height for the evergreen/semi-evergreen barrier situated at the boundary between 14 Oak Avenue and 16 Oak Avenue, calculated under the Building Research Establishment (BRE Report 470) formula recognized under Section 66 of the Anti-social Behaviour Act 2003. **Hedge Species:** Leylandii (Leyland Cypress) **Orientation:** S (0.25× factor) **Current Height:** 4.00m (13ft 1in) **Statutory Action Height:** 2.75m (9ft 0in) **Recommended Trim Height:** 2.00m **Prescribed Cut Reduction:** 2.00m IN WITNESS WHEREOF the parties have executed this Statutory Memorandum of Understanding under Section 68(2) of the Anti-social Behaviour Act 2003 on the date first written above. Signed: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ (Complainant) Signed: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ (Hedge Owner) 🔒 Full Legal Execution Clause Unlocked in Instant PDF Download What to Say at the Door (Good-Neighbour De-Escalation Script) "Hi, I had the official council light calculation done for the garden hedge so we don't have to guess or involve Birmingham City Council. Here is the certified 1-page summary. If you're happy, let's get three local tree surgeons round and split the cost 50/50 down to the BRE height — saves both of us £350 in council fees and keeps things friendly." 4-Page Dossier (£24.99)1-Page Notice (£9.99) [Preview All 4 Sample Dossier Pages Before Buying →](/dossier-pack?species=leylandii&height=4&council=birmingham&depth=11&dir=S&persona=complainant&address=14%20Oak%20Avenue&naddress=16%20Oak%20Avenue) Step 3: Cost Arbitrage & Local Quotes100% Free Service #### Save £145 Each: £205 Neighbour Split vs. £350 Council Fee Birmingham City Council charges a non-refundable £350 fee just to investigate a complaint (16–24 week wait, mandatory Law Society TA6 property sale disclosure, and zero cutting included). A 50/50 neighbour split on an NPTC tree surgeon (£205 each, £410–£560 total) is vastly cheaper, settles amicably in days, and avoids a permanent local land charge. Council Fee£35016–24 wk wait + TA6 record Local Tree Surgeon£410–£560Immediate resolution 50/50 Split£205 eachFastest amicable deal **Law Society TA6 Property Sale Warning:** Filing a formal complaint with Birmingham City Council creates an official dispute that **must be disclosed on Law Society Property Form TA6** when selling either property. Resolving it via a **50/50 split (£205 each)** or an amicable notice keeps titles 100% clean. Get 3 Free Quotes from Vetted Local Tree Surgeons UK GDPR Consent: By requesting quotes, you agree to share your hedge dimensions & contact details with up to 3 vetted NPTC arborists under our [Privacy Policy](/privacy) (ICO Reg: ZC136598). Pre-Filled BS 3998 Arborist Job SpecificationAuto-Attached to Quotes Species & Boundary RunLeylandii • 12m Run Required Crown Reduction4.0m → 2.00m (-2.00m) **£5m Public Liability** Insured **NPTC CS30/38** Qualified **All Chipping & Waste** Removed **50/50 Split Invoice** Available DIY maintenance? 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