Photo: Roger Cornfoot · CC BY-SA 2.04 listed buildings
Cadw counts them inside Gelligaer’s built-up area, 28 for every 10,000 residents. It also has 2 scheduled monuments. 11% of its homes were built before 1919. Gelligaer grades C for history.
Where Gelligaer’s history is
Every Grade I and II* building, monument and historic park.
Hover a dot for its name; tap one with a photo to open it.
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.
4 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 4 Grade II listed buildings, A to Z
1 conservation area covers 13% of Gelligaer
Areas the council protects as a whole: demolition and changes to how buildings look need consent, and trees are protected.
2 of the 4 listed buildings stand in one.
Cadw’s conservation areas via DataMapWales. Hectares are the part of each area inside the built-up area.
Monuments, parks and gardens
Designations that overlap the town by a tenth of their area or half a hectare.
2 scheduled monuments
Nationally important archaeological sites and monuments, protected by law; work on them needs consent from the Welsh Government (Cadw).
Gelligaer grades C for history
Protected heritage and the age of the town’s homes, against all UK towns.
Two measures, each ranked against every UK town of 1,000 or more, with protected heritage counting twice as much as the age of homes. Protected heritage counts each listed building by its grade (Grade I three points, II* two, II one), each scheduled monument and battlefield two, and each registered park or garden by its grade; it is ranked both per 10,000 residents and as a total, so a village with one fine church doesn’t outrank a historic city. The second measure is the share of homes built before 1919, from the Valuation Office Agency’s council tax records. History is a character grade: it describes the town and isn’t part of the overall grade.
Listed buildings in the places around Gelligaer
| Town | People | Listed | Grade I | History |
|---|---|---|---|---|
| Gelligaer | 1,436 | 4 | 0 | C |
| Pen-pedair-heol | 3,787 | 1 | 0 | D |
| Tir-y-berth and Glan-y-nant | 1,411 | 2 | 0 | C+ |
| Ystrad Mynach | 11,856 | 15 | 0 | B− |
| Nelson | 4,235 | 2 | 0 | C |
| Fleur-de-lis and Pengam | 3,102 | 1 | 0 | C |
| Trelewis | 2,022 | 2 | 1 | C+ |
| Bargod | 8,034 | 3 | 0 | C+ |
Gelligaer in brief
Gelligaer has 4 listed buildings. A conservation area has protected part of it since 1980. Otherwise the figures are ordinary: per resident it sits near the middle of UK towns; the list grew between 1999 and 2001; and it also has 2 scheduled monuments.
Questions about Gelligaer’s history
How many listed buildings are there in Gelligaer?
Cadw lists 4 buildings inside Gelligaer’s built-up area: 0 Grade I, 0 Grade II* and 4 Grade II.
Are there scheduled monuments in Gelligaer?
Yes, 2 scheduled monuments, including Gelligaer Roman Site and Twyn Castell.
How many conservation areas are there in Gelligaer?
1, covering about 8 hectares of the town. The largest is Gelligaer.
How old are the homes in Gelligaer?
11% of homes were built before 1919 and 26% before 1940, from the Valuation Office Agency’s council tax records (March 2025).
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.