IChurch · listed 1951Capel PenielPhoto: Bill Harrison · CC BY-SA 2.0
Capel Peniel · Photo: Bill Harrison · CC BY-SA 2.0–Not graded
History of Tremadog · Cadw
Old homes in Tremadog: 57% built before 1919
The typical town has 15%: Tremadog has 4 times the share. Cadw lists 84 buildings inside Tremadog’s built-up area, 1,141 for every 10,000 residents. It also has 1 scheduled monument. We have photos of 7 of its listed buildings.
Listed buildings
84
1,141 per 10,000 residents
Grade I
1
exceptional interest
Grade II*
6
more than special interest
Scheduled monuments
1
1 registered park or garden
Homes built before 1919
57%
typical UK town 15%
In pictures
Tremadog in 7 photos
Nearly every Grade I and II* building, photographed. Tap a photo to step through them full screen.
Church of St MaryGrade II* listed
Gateway to the Church of Saint MaryGrade II* listed
Market Hall (Siola)Grade II* listed
Plas Tan-yr-alltGrade II* listed
Tremadog ManufactoryGrade II* listed+2See all photosPhotos from Wikimedia Commons and Geograph, copied to our own server, each credited to its photographer with its licence; names open the building’s page or its official list entry.
The map
Where Tremadog’s history is
Every Grade I and II* building, monument and historic park.
Grade IGrade II*Scheduled monumentPark or garden
Hover a dot for its name; tap one with a photo to open it.
84 listed buildings by grade
1 Grade I6 Grade II*77 Grade II
Cadw lists buildings of special architectural or historic interest in three grades: Grade I for buildings of exceptional interest, Grade II* for particularly important buildings of more than special interest, and Grade II for buildings of special interest. Listing protects the whole building, inside and out.
Every entry on Cadw’s register of listed buildings whose point lies inside the ONS 2022 built-up-area boundary. One list entry can cover a terrace or a group of buildings.
Grade I
The Grade I listed building in Tremadog
Buildings of exceptional interest, about 1.6% of all listed buildings. Every one is photographed. Each opens its own page, with the official list entry.
Grade II*
The 6 Grade II* listed buildings in Tremadog
Particularly important buildings of more than special interest. Every one is photographed.
II*Church · listed 1951St Mary's ChurchOn the list as Church of St MaryPhoto: Alan Fryer · CC BY-SA 2.0
II*Church · listed 1974Gateway to the Church of Saint MaryPhoto: Llywelyn2000 · CC BY-SA 4.0
II*Inns & shops · listed 1951Tremadog Town HallOn the list as Market Hall (Siola)Photo: Eric Jones · CC BY-SA 2.0
II*House · listed 1951Plas Tan-yr-alltPhoto: Alan Fryer · CC BY-SA 2.0
II*Inns & shops · listed 1951Tremadog ManufactoryPhoto: Alan Fryer · CC BY-SA 2.0
II*House · listed 1951Ty Nanney, including forecourt walls, gate piers and gatePhoto: Alan Fryer · CC BY-SA 2.0
Historic streets
Sgwar y Farchnad (High Street) has the most listed buildings
Streets by the listed entries with an address on them. One entry can be a whole terrace, so long rows count once.
Sgwar y Farchnad (High Street)11 listed
Graig (Sunnyside)10 listed
Heol Dulyn (Dublin Street)8 listed
Hoel y Llan (Church Street)7 listed
Sgwar y Farchnad (Market Square)5 listed
Of the 84 entries, 42 are named by a street address; the rest are named buildings such as churches, halls and bridges.
What’s protected
Most of Tremadog’s listed buildings are homes
Every listed building sorted by what its list name says it is.
Houses, terraces & villas69
Inns, shops & warehouses7
Churches, chapels & priories3
Walls, gates & bridges3
Memorials, crosses & tombs1
Street furniture1
69 entries (82%) are houses, terraces and villas. 3 are churches, chapels and priories, including 1 of the 1 Grade I buildings.
Buildings are sorted by Cadw’s broad class for each building, else by words in its name; an entry named only by its address counts as a house.
Grade II
77 Grade II listed buildings
Most listed buildings are in this grade, which covers buildings of special interest. Open any building to read its official list entry.
All 77 Grade II listed buildings, A to Z
AwelonBodlondebBronhaulBwthyn MardaCrud yr AwelCynfalDeseretFormer Tremadog lock up (also known as Siop Crydd & Carchar)GelliGwynle, including steps to the L-handHafanHeddfaHouse, including steps to R-handIvy CottageKitchen garden walls and former coach house (The Studio) at Plas Tan-yr-alltOchr HeulogPost Office and houseRoyal Madoc Arms HotelShelley memorial in garden at Plas Tan-yr-alltShop and houseSnowdon LodgeSpar Shop and houseSteps and lamp post at centre of Market SquareStiwdio Harddwch (One-to-One Beauty Studio)TaleifionThe Golden FleeceThe Old GranaryTrefdyTremadog War Memorial InstituteTy Felin (Mill House)Ty GwynTy Pab, including attached garden wall and gateUnion InnY BwthynY Sgwar (The Square Restaurant)1 Heol Dulyn (Dublin Street)1 Hoel y Llan (Church Street)1 Sgwar y Farchnad (High Street)10 Sgwar y Farchnad (Market Square)10 Y Graig (Sunnyside)11 Heol Dulyn (Dublin Street)11 Sgwar y Farchnad (High Street)11 Sgwar y Farchnad (Market Square)12 Hoel y Llan (Church Street)13 Sgwar y Farchnad (High Street)14 Sgwar y Farchnad (High Street)15 Heol Dulyn (Dublin Street)15 Hoel y Llan (Church Street)16 Hoel y Llan (Church Street)16 Sgwar y Farchnad (High Street)17 Heol Dulyn (Dublin Street)17 Sgwar y Farchnad (High Street)19 Heol Dulyn (Dublin Street)19 Sgwar y Farchnad (High Street)19 Y Graig (Sunnyside)20 Y Graig (Sunnyside)21 Sgwar y Farchnad (High Street)21 Y Graig (Sunnyside)23 Heol Dulyn (Dublin Street)23 Sgwar y Farchnad (High Street)25 Heol Dulyn (Dublin Street)28 Sgwar y Farchnad (High Street)3 Hoel y Llan (Church Street)3 Sgwar y Farchnad (Market Square)30 Sgwar y Farchnad (High Street)4 Y Graig (Sunnyside)5 Hoel y Llan (Church Street)5 Market Square5 Y Graig (Sunnyside)6 Sgwar y Farchnad (Market Square)6 Y Graig (Sunnyside)7 Y Graig (Sunnyside)7-9 Hoel y Llan (Church Street)8 Y Graig (Sunnyside)9 Heol Dulyn (Dublin Street)9 Sgwar y Farchnad (Market Square)9 Y Graig (Sunnyside)
Conservation areas
1 conservation area covers 25% of Tremadog
Areas the council protects as a whole: demolition and changes to how buildings look need consent, and trees are protected.
Tremadog 19686 ha
6 hain conservation areas, of 25 ha inside the built-up area.
80 of the 84 listed buildings stand in one.
Cadw’s conservation areas via DataMapWales. Hectares are the part of each area inside the built-up area.
How the list grew
More than half of Tremadog’s listed buildings were added in one year, 1951
The year each building now on the list was first listed.
1951 · 451974 · 35
19501960197019801990200020102020
The first 45 entries were listed in 1951, 1 of the 1 Grade I buildings among them. Only 0 have been added in the last 15 years.
Monuments & landscapes
Monuments, parks and gardens
Designations that overlap the town by a tenth of their area or half a hectare.
1 scheduled monument
Nationally important archaeological sites and monuments, protected by law; work on them needs consent from the Welsh Government (Cadw).
RomanRoman Bath-House, TremadocRoman; Bath House
1 registered park or garden
Tan-yr-AlltGrade II · Wooded park, ornamental garden with good trees, kitchen garden, view
Homes by age
57% of Tremadog’s homes were built before 1919
Every home by when it was built, from council tax records, against England & Wales (the dark tick).
55%
Before 1900
1.3%
1900–18
1.3%
1919–29
1.3%
1930s
4%
1945–54
1.3%
1955–64
17%
1965–72
5.6%
1973–82
9.6%
1983–92
1.3%
1993–99
2.7%
2000–08
0%
2009–15
0%
2016–25
TremadogEngland & Wales
55% of homes are Victorian or older, against 16% across England and Wales. The busiest period since was 1965–72, which added 17% of today’s homes.
Valuation Office Agency, council tax stock of properties by build period, 31 March 2025, for the neighbourhoods (LSOAs) that make up the town, split by where their residents live. Homes with no recorded build period (0 here) are left out; 1939–44 is not a period in the data.
Born here
4 notable people born in Tremadog before 1900
Their lives on one timeline, earliest first.
Richard Thomas
Richard Methuen Greaves
Robert Armstrong-Jones
T. E. Lawrence
175017751800182518501875190019251950
T. E. Lawrence1888–1935 · British archaeologist, army officer and diplomat (1888–1935)
Robert Armstrong-Jones1857–1943 · Welsh physician, psychiatrist, grandfather of Antony Armstrong-Jones,…
RT
Richard Thomas1753–1780 · Welsh Anglican priest and antiquarian
RG
Richard Methuen Greaves1852–1942 · (1852-1942)
Everyone born in Tremadog → Birthplaces from Wikidata; portraits from Wikimedia Commons.
Neighbours
Listed buildings in the places around Tremadog
| Town | People | Listed | Grade I | History |
|---|---|---|---|---|
| Tremadog | 736 | 84 | 1 | — |
| Porthmadog | 2,579 | 90 | 0 | A+ |
| Penrhyndeudraeth | 1,463 | 12 | 0 | B+ |
| Criccieth | 1,737 | 29 | 0 | A |
| Harlech | 1,261 | 22 | 1 | A |
| Blaenau Ffestiniog | 3,449 | 29 | 0 | A |
| Penygroes | 1,793 | 8 | 0 | B |
| Pwllheli | 3,622 | 121 | 0 | A+ |
In brief
Tremadog in brief
More of Tremadog’s homes are old than in most places: 57% were built before 1919, against 15% in the typical UK town. In all there are 84 listed buildings, 1 of them Grade I. A conservation area has protected part of it since 1968. Of the whole list, 82% are houses, terraces and villas.
T. E. Lawrence (1888), Robert Armstrong-Jones (1857) and Richard Thomas (1753) are among the 4 people born here before 1900. More than half went on the list in a single year, 1951: 45 of 84. Beyond that, it also has a scheduled monument.
Questions about Tremadog’s history
How many listed buildings are there in Tremadog?
Cadw lists 84 buildings inside Tremadog’s built-up area: 1 Grade I, 6 Grade II* and 77 Grade II.
What are the Grade I listed buildings in Tremadog?
One: Capel Peniel.
Which street in Tremadog has the most listed buildings?
Sgwar y Farchnad (High Street) (11), Graig (Sunnyside) (10) and Heol Dulyn (Dublin Street) (8) have the most listed entries named by an address. One entry can be a whole terrace.
Are there scheduled monuments in Tremadog?
Yes, 1 scheduled monument, including Roman Bath-House, Tremadoc.
How many conservation areas are there in Tremadog?
1, covering about 6 hectares of the town. The largest is Tremadog.
When were Tremadog’s buildings listed?
The first in 1951; the most, 45, in 1951.
Who was born in Tremadog?
Among people born before 1900: T. E. Lawrence (1888), Robert Armstrong-Jones (1857), Richard Thomas (1753) and Richard Methuen Greaves (1852).
How old are the homes in Tremadog?
57% of homes were built before 1919 and 60% before 1940, from the Valuation Office Agency’s council tax records (March 2025).
Tremadog has no History Grade.
Listed buildings, scheduled monuments and historic parks and gardens: Cadw, © Crown copyright, via DataMapWales.
Sources: Cadw listed buildings, scheduled monuments and registered historic parks and gardens via DataMapWales, October 2026, inside the ONS 2022 built-up-area boundary · Valuation Office Agency, Council Tax: stock of properties by build period (31 March 2025) · TownRatings grades: our own summary of the data, ranked against UK towns only · Cadw conservation areas via DataMapWales (October 2026). All under the Open Government Licence v3.0.
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.