Set in the western foothills of the Brecon Beacons, Plas Glansevin is a secluded Grade II-listed Georgian Mansion and Annexe that provides an elegant and unique environment for any event, be it weekend getaway, party, wedding, or corporate break.

Houses on the splendid scale of Plas Glansevin are few and far between. Set in ten acres, Plas Glansevin comprises a Mansion House and Annexe, which can accommodate parties of up to 56. It is thought that a dwelling has been sited at Plas Glansevin for about a thousand years. The 800-year-old oak tree that dominates the front lawn has long been a part of the site’s history and is often used as the perfect setting for weddings and blessings.

Welcome to Plas Glansevin

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Specify how many guests and when you would like your booking to begin.

Check the Calendar for availability.

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We had a fantastic wedding at Plas Glansevin. So many people spend so many months planning their wedding and then it’s all over in a few hours. we feel very lucky that we had a whole weekend – not just a wedding, a football game, a bouncy castle, a table tennis tournament, a pool tournament, a disco, a quiz night and lots and lots of nice things to drink and amazing food by Charlotte. The Mansion and the Annexe were absolutely perfect, our family and friends all had comfortable rooms and loved the house. The children had an amazing time chasing each other round the house. There was lots of laughter all weekend and a few tears when it was time to go. It really was a weekend to treasure, and everything we had hoped for. Thanks so much for all your help, and for having the house so perfect for when we arrived. Best wishes and many many thanks.

Helen and Dan

Picture of team building exercise outdoors

Corporate Team Building

Plas Glansevin offers complete privacy and seclusion in a versatile environment that will inspire your team, providing an ideal location for strategic planning, team building, management retreats, outdoor oriented programmes, and fun getaways.

Main meeting rooms will house theatre-style layouts (30+), and up to eight breakout meetings can be held at any time in smaller reception rooms throughout Plas Glansevin. The main meeting room can be laid out to your specification with flip charts and wall-mounted projector screens. Plasma screens and digital projectors may be rented on your behalf from local specialist contractors. We also have complementary wireless broadband running throughout Plas Glansevin.

Picture of the staircase in the entrance hall

About Us & Our History

It is thought that a dwelling, originally known as Llansevin, has been sited at Plas Glansevin for about a thousand years. There is a story in Welsh legend that Marchel, mother of St. Brychan Brycheiniog, king of the Kingdom of Brycheiniog (Brecon), whilst on a journey to Ireland with an escort of 300 men, rested for one night at “Llansevin”.

Harvey Peters is the owner of Plas Glansevin and the founder of Minerva Consulting which has been based here since 1985. Harvey works in the UK and internationally, facilitating leadership and team-building programmes. Harvey’s wife, Osanna Peters, is responsible for the interior design at Plas Glansevin, collecting artwork and furniture from her travels across Africa, Europe, and South East Asia.

Picture of couple taking the wedding vows

Weddings & Parties

Plas Glansevin makes the ideal location for your celebration, whether it be anniversary, reunion, birthday party or wedding. Our Grade II-listed Georgian Mansion House provides an elegant yet bohemian setting . The beautiful grounds offer a stunning backdrop for group and family photographs.

We have a wedding licence, you can also have a wedding celebrant who will compose a blessing for you to be held at Glansevin. We have had many wonderful weddings here and the buildings and the grounds will really lend themselves to whatever style of celebration you are planning. We often have services under the majestic 800 year old oak tree on the front lawn of the house. We also have many other grand rooms to choose from. We can put you in touch with local florists, hairdressers, musicians, etc.

Facebook Posts

The oak tree that dominates the front lawn at Glansevin is over 800 years old.
It has been the setting for blessings, weddings, baptisms, and beautiful outdoor events for the past 15 years. There's nothing quite like seeing the spring bulbs that come up beside the roots or the amazing range of wildlife harboured in the branches!
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Our banquet hall, charmingly rustic; decorate it your way!!
#glansevin #dineinstyle #nocorkage #hireamansion #planyourparty 🏡
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Whilst the budding of spring bulbs and the warmth of summer sun may feel a long way away, at least you can start planning your spring or summer event or wedding at Glansevin now!

April to September is our peak time of weddings, corporate events and country breaks with family and friends. If you're interested in having an event with us during those high-peak months, make sure you get in touch with us for availability and more info as soon as possible.

We look forward to hearing from you - drop us a line at
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This is no ordinary staircase... Not only has this been the entrance for a number of lovely brides in the past few years, Glansevin's statement staircase was designed by the legendary architect John Nash over 200 years ago! Nash was the architect responsible for much of the layout of Regency London. Our staircase is a testament to his quintessential Georgian style.

Talk about making a unique entrance on your special day! Glansevin is a building rich in history and it makes for a truly unique venue for your event, family break or wedding.
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It's never too early to start planning your wedding! Forget any January blues and start thinking about your special day ahead.

We have a number of viewing slots available in the next few weeks and it would be our pleasure to show you around. Get in touch at to set up a viewing.

In the meantime, check out our Wedding Brochure for more info and FAQs:
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Time to pack away the baubles and welcome in the New Year!!
Thinking of a house party in 2017? Contact us now:
#mansionparty #styleityourway #hireaprivatemansion #welshcountryside #nocorkage #selfcater #friendsandfamily
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A very Happy New Year's to all of our previous and incoming guests!

It's been a fantastic 2016 for us at Glansevin and we hope to welcome many more exciting stays and events in 2017.

Here's a stunning shot of the beautiful Brecon Beacons - which is only a brief drive away from us at Glansevin. So if you will be staying with us in 2017, you will have the pleasure of seeing all of this beauty for yourself!
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Whether it's a corporate pool tournament or a family game of table football, we've got you covered! Our brilliant games room will keep the younger members of your crowd (and very fun adults!) entertained during your stay. Anyone for a game of table football? 🙂 ... See MoreSee Less

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Some of our wonderful team finishing their last cleaning day of 2016 at Glansevin in high spirits!! 🎉
Thank you lovely ladies for the fantastic job you do keeping the Mansion spick & span through the year!! Happy holidays!!
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In the spirit of giving, don't forget our Festive Special Offer - 20% off ALL bookings in Jan, February, October, November and December 2017. The offer ends December 31st 2016, so make the most of our gift to you while it lasts!

It's never too early to start planning your event with us 🙂
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