History in Structure

This site is entirely user-supported. See how you can help.

Plas Mynach

A Grade II* Listed Building in Barmouth, Gwynedd

More Photos »
Approximate Location Map
Large Map »


Latitude: 52.7292 / 52°43'45"N

Longitude: -4.0627 / 4°3'45"W

OS Eastings: 260807

OS Northings: 316611

OS Grid: SH608166

Mapcode National: GBR 8S.14BL

Mapcode Global: WH56L.KNLL

Entry Name: Plas Mynach

Listing Date: 25 February 1992

Last Amended: 31 January 1995

Grade: II*

Source: Cadw

Source ID: 5244

Building Class: Domestic

Location: Situated on raised ground 1.5 km to the NW of Barmouth Railway Station and lying between the railway line and the main road. Approached from the N by a private road along an embanked and revetted driv

County: Gwynedd

Community: Barmouth (Bermo)

Community: Barmouth

Locality: Hendremynach

Built-Up Area: Barmouth

Traditional County: Merionethshire

Find accommodation in


A large country house designed in Welsh vernacular and castellated style by John Douglas, architect of Chester, for W H Jones; dated 1882 and 1886 on rainwaterheads. In its simple austerity, Plas Mynach was thought by contemporaries to be the perfect country-house design in its prominent position overlooking the sea, and its influence can be seen in several inferior local houses.


Constructed of local stone with snecked rubble facings, dressed quoins and limestone dressings; slate roofs with characteristic unkneelered crow-step gables, oversailing eaves and grouped masonry chimneys. The composition consists of a mock-defensive low spreading tower with stair turret, a main range to the S and lowservice ranges to the N; adjoining the tower to the E, a twin-gabledgatehouse range. Of 2 storeys with tower of 3 storeys plus raised basement and single-storey service buildings. Dentilated stringcourseto main block and twin outer gables to S face with curved angles toground floor. 2, 3, and 4-light mullioned and transomed windows withsmall-pane glazing, chamfered surrounds and cills. Advanced, gabled entrance porch with moulded 4-centered arch with incised foliatedecoration, rolled angles and recessed, boarded door with decorative ironwork; slate steps. Above this a heraldic panel with initials `WHGA'. Splayed bay to ground floor of S end with incised sundial dated1890. Similar treatment to long sea-front with small stepped parapetwall to porch in angle of gabled range and 5-light window with transome to centre. Walled terraces with cappings and archway; slatesteps leading down to garden. Battered walls and corbelled parapet with raised angles to tower with clasping stair-turret with elaborateironwork weathervane. Gatehouse range with advanced gable to L with dentilated stringcourse. Wide Gothic archway to curving terrace atmain entry. Some cusped window lights and an oriel over inner archway; bellcote to roof. Curving terrace with slate copings andmassive raked buttresses. Square rubble gazebo with pyramidal roof at SW of terraced gardens.


Interior not accessible at time of inspection (October 1994) but said to retain original character.

Reasons for Listing

Included at II* as one of the more important country houses by John Douglas, in an apparently little-altered condition.

Recommended Books

Other nearby listed buildings

  • II Plas Mynach Lodge
    Set back slightly from the main road behind a rubble wall splayed inwards to R and terminating in a dressed stone gatepier with conical capping.
  • II Porth Mynach
    On the SW side of the main road, behind a low rubble wall.
  • II Church Hall
    Set back slightly from the lane on a raised plateau behind a part walled and railed garden.
  • II* St John's Church
    Prominently located on an elevated site against the steep, rocky slope of the hill, at the end of St. John's Hill.
  • II St Anne House
    Raised up on a terrace and set back to the N of the street; reached via a long flight of steps.
  • II Barmouth South Signal Box
    Adjoining the level crossing at the south end of Beach Road and close to the SE end of Barmouth Station platform (down) on the Aberystwyth to Pwllheli line.
  • II Tanyrallt
    Set against the hill side to the E of an unnamed lane which winds behind and above Water Street. Behind rubble garden walls with central wrought iron gate and plain flanking piers.
  • II Tanyrallt Cottage
    On the corner of the lane where Water St. meets Cambrian St.

BritishListedBuildings.co.uk is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact BritishListedBuildings.co.uk for any queries related to any individual listed building, planning permission related to listed buildings or the listing process itself.

British Listed Buildings is a Good Stuff website.