Short-term letting in Mid Wales: Powys and Bannau Brycheiniog

Hills, festivals and the Welsh heartland

Powys covers a quarter of Wales and very few people, which is exactly what its visitors come for. The Bannau Brycheiniog National Park, formerly the Brecon Beacons, draws walkers and families from South Wales and England; Hay-on-Wye's literary festival fills every bed in late spring; the Royal Welsh Show makes Builth Wells the busiest town in Wales for a week in July; and the Elan Valley reservoirs, Llandrindod Wells and Machynlleth attract cyclists, stargazers and those seeking quiet. Farmhouses, barn conversions and cottages form the core of the market.

The Welsh register and the licence to come

Since 1 October 2026 the Welsh Revenue Authority's register of visitor accommodation has been open. Every provider offering stays of up to 31 nights needs to register, at no cost, by 31 March 2027; penalties start at £100 per premises. That applies in Powys even though the council has not announced a visitor levy. Further ahead, the Development of Tourism and Regulation of Visitor Accommodation (Wales) Act 2026 lays the legal basis for licensing, beginning with self-catering accommodation, with March 2030 as the default start date.

Local taxes in Powys

Welsh law allows a second-home premium of up to 300%, but Powys County Council has kept its premium at 75% for 2026/27. A holiday let moves to non-domestic rates only if it is available for 252 days and let for 182 days in a year, a threshold the Welsh Government is consulting on reducing slightly from April 2027. For many rural properties with a short season, whether that test can be met is the central financial question.

Planning in and around the park

Within Bannau Brycheiniog, planning decisions are made by the national park authority rather than the county council, and older permissions for barn conversions sometimes carry holiday-use or occupancy conditions. Check them before buying or changing how a property is used.

Our advice is to build the calendar around the festivals, the show and walking seasons, to protect the property through wet winters, and to register early. Tell us about the property: we study every request and tell you honestly whether and how we can help.

The rest of Powys: trains, bogs and a green festival

Mid Wales has quirks that fill beds in unexpected weeks. Llanwrtyd Wells, one of the smallest towns in Britain, hosts the World Bog Snorkelling Championships in August and the Man versus Horse race in June. Green Man takes over the Glanusk estate near Crickhowell each August, and Brecon has a long-standing jazz festival. Near Machynlleth, the Centre for Alternative Technology attracts visitors interested in sustainable living, and the Dyfi valley is a UNESCO biosphere.

In the north of the county, Welshpool offers Powis Castle and its terraced gardens and a narrow-gauge steam line to Llanfair Caereinion, while Lake Vyrnwy, a Victorian reservoir with an RSPB reserve, draws cyclists and birdwatchers. The Elan Valley was one of the first places in Wales recognised as an international dark sky park, which gives winter stargazing breaks a real audience.

What owners here should prepare for

• The Heart of Wales line through Llandrindod and Llanwrtyd, and the Cambrian line through Machynlleth, bring some car-free guests; tell them how far the station is and whether you collect.
• Mobile coverage is patchy in the hills: good Wi-Fi and a landline or booster reassure guests.
• Festival-goers want secure storage for bikes and gear, and flexible check-out on the Monday.