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    Welsh Planning - Quick Reference Card

    4 min read·Reviewed April 2026
    By SiteKiln Editorial TeamFirst published 2 Apr 2026Updated 19 Apr 2026
    Working in Wales
    UK-wide

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    ‍‌‌​‌‌​​‌​​‌​‌‌​​‌​​‌​‌‌‌​‌​​‌‌‌‌‍# Welsh Planning - Quick Reference Card

    A one-pager for the van - the bits that actually matter if you're used to the English system.


    Big picture - how Wales differs

    EnglandWales
    National policyNPPF + Planning Practice Guidance (PPG)Planning Policy Wales (PPW) + Technical Advice Notes (TANs)
    PD rightsGPDO 2015 (as amended)GPDO 1995 (as amended) - different thresholds, no Use Class E PD
    Environmental bodyEnvironment Agency + Natural EnglandNatural Resources Wales (NRW) - does both jobs
    Extra factor-Welsh language (TAN 20) can affect bigger applications

    PPW and TANs - what they are

    Planning Policy Wales (PPW): national policy for Wales - sustainable development, design, housing, transport, climate, Welsh language. Local plans and decisions must follow it.

    Technical Advice Notes (TANs): topic-based guidance, like PPG in England:

    TANTopic
    TAN 12Design
    TAN 15Flooding
    TAN 18Transport
    TAN 20Welsh language and community

    Permitted development - don't assume England = Wales

    • Wales still works off the 1995 GPDO (heavily amended), not the 2015 English one.
    • Many newer English PD rights don't exist in Wales - including Use Class E and some commercial-to-residential conversions.
    • PD thresholds, heights and volume limits on householder stuff (side/rear extensions, roof work, outbuildings) can differ.

    Bottom line: never assume "it was PD in England" means PD in Wales - always check the Welsh GPDO and the relevant council guidance.


    Natural Resources Wales (NRW)

    • Big environmental body for Wales (like EA + Natural England rolled together).
    • Statutory consultee on planning for flood risk, protected sites, pollution, forestry, major drainage.
    • Feeds into about 9,000 planning applications a year.

    Expect NRW in conditions on: flood zones, river works, coastal work, sites near SSSIs/AONBs/protected habitats.


    Welsh language (TAN 20)

    • TAN 20 requires councils to consider Welsh language in planning, especially in areas where it's widely spoken.
    • Bigger housing/job-creating schemes can need a Welsh Language Impact Assessment.
    • The client or designer handles it, but it affects what gets approved and how.

    Rent Smart Wales - if you work for landlords

    • Every landlord with a rental in Wales must register with Rent Smart Wales - mandatory since 2016.
    • Anyone doing letting or management must be licensed.
    • Non-compliance is a criminal offence: fines up to £150,000, rent repayment orders, loss of eviction rights.
    • You're not responsible for their registration, but if they're cutting corners on Rent Smart Wales, they'll probably cut corners on paying you too.

    Quick checklist for English crews in Wales

    • PD or full application? Don't assume English PD - check Welsh PD rights on council / gov.wales site
    • Which national policy? Use PPW + TANs, not NPPF/PPG
    • Is NRW involved? Flood zones, rivers, coasts, designated sites = expect NRW as consultee
    • Welsh language? On bigger schemes in Welsh-speaking areas, check if Language Impact Assessment needed
    • Landlord jobs? Check if landlord is Rent Smart Wales registered/licensed

    Contacts

    WhoWhatContact
    Local Planning AuthorityApplications, PD queries, pre-app adviceFind via council website for the site postcode
    Natural Resources Wales (NRW)Flood risk, environmental permits, protected sites0300 065 3000
    Planning Aid WalesFree planning helpline for eligible individuals and community groups029 2062 5000
    Rent Smart WalesLandlord registration checkerrentsmart.gov.wales - 03000 133 344

    Sources

    • Planning (Wales) Act 2015 - legislation.gov.uk/anaw/2015/4/contents
    • Planning Policy Wales (PPW) - Welsh Government national planning policy
    • Technical Advice Notes (TANs) - Welsh Government supplementary planning guidance
    • Town and Country Planning (General Permitted Development) Order 1995 (as amended for Wales)
    • Housing (Wales) Act 2014, Part 1 - Rent Smart Wales registration and licensing

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