# Grade I listed buildings in Hertfordshire

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There are over 9,000 Grade I listed buildings in England. This page is a list of these buildings in the county of Hertfordshire, organised by district.

## Broxbourne

| Name | Location | Type | Completed | Date designated | Grid ref. Geo-coordinates | Entry number | Image |
| Church of St Mary | Cheshunt | Church | 1418–1448 | 11 June 1954 | TL3491502415 51°42′15″N 0°02′56″W﻿ / ﻿51.704264°N 0.048966°W﻿ / 51.704264; -0.048966﻿ (Church of St Mary) | 1172977 | Church of St MaryMore images |
| Eleanor Cross | Waltham Cross | Eleanor Cross | 1291 | 11 June 1954 | TL3607300394 51°41′09″N 0°01′59″W﻿ / ﻿51.685824°N 0.033006°W﻿ / 51.685824; -0.033006﻿ (Eleanor Cross) | 1173222 | Eleanor CrossMore images |
| Parish Church of St Augustine | Broxbourne | Parish Church | C15-C16 | 13 April 1961 | TL3715906947 51°44′40″N 0°00′53″W﻿ / ﻿51.744443°N 0.01473°W﻿ / 51.744443; -0.01473﻿ (Parish Church of St Augustine) | 1100545 | Parish Church of St AugustineMore images |
| Wormleybury | Wormley | House | 1734 | 13 April 1961 | TL3557505783 51°44′04″N 0°02′17″W﻿ / ﻿51.734369°N 0.038111°W﻿ / 51.734369; -0.038111﻿ (Wormleybury) | 1100541 | WormleyburyMore images |

## Dacorum

| Name | Location | Type | Completed | Date designated | Grid ref. Geo-coordinates | Entry number | Image |
| Church of St John the Baptist (Church of England) | Aldbury | Parish Church | Romanesque | 30 November 1966 | SP9635112471 51°48′09″N 0°36′15″W﻿ / ﻿51.802591°N 0.604051°W﻿ / 51.802591; -0.604051﻿ (Church of St John the Baptist (Church of England)) | 1078047 | Church of St John the Baptist (Church of England)More images |
| Berkhamsted School Old Building | Berkhamsted | School | 1544 | 29 July 1950 | SP9939007814 51°45′37″N 0°33′41″W﻿ / ﻿51.760201°N 0.561324°W﻿ / 51.760201; -0.561324﻿ (Berkhamsted School Old Building) | 1342152 | Berkhamsted School Old BuildingMore images |
| Beechwood Park School and Walls of Walled Garden adjoining | Beechwood Park, Flamstead | House | c. 1664 | 22 October 1952 | TL0453514478 51°49′09″N 0°29′05″W﻿ / ﻿51.819161°N 0.484799°W﻿ / 51.819161; -0.484799﻿ (Beechwood Park School and Walls of Walled Garden adjoining) | 1100376 | Beechwood Park School and Walls of Walled Garden adjoiningMore images |
| Church of St Leonard | Flamstead | Parish Church | Early 12th century | 26 January 1967 | TL0788714548 51°49′09″N 0°26′10″W﻿ / ﻿51.819154°N 0.436165°W﻿ / 51.819154; -0.436165﻿ (Church of St Leonard) | 1172799 | Church of St LeonardMore images |
| Church of St John the Baptist | Great Gaddesden | Parish Church | Early 12th century | 26 January 1967 | TL0286811263 51°47′26″N 0°30′36″W﻿ / ﻿51.790574°N 0.509928°W﻿ / 51.790574; -0.509928﻿ (Church of St John the Baptist) | 1101262 | Church of St John the BaptistMore images |
| Ashridge Management College | Little Gaddesden | House | 1884 | 14 May 1952 | SP9939012181 51°47′58″N 0°33′36″W﻿ / ﻿51.799453°N 0.560075°W﻿ / 51.799453; -0.560075﻿ (Ashridge Management College) | 1348442 | Ashridge Management CollegeMore images |
| Church of St Peter and St Paul (Church of England) | Little Gaddesden | Urn | 1671 | 30 November 1966 | SP9978813820 51°48′51″N 0°33′14″W﻿ / ﻿51.814114°N 0.553834°W﻿ / 51.814114; -0.553834﻿ (Church of St Peter and St Paul (Church of England)) | 1100424 | Church of St Peter and St Paul (Church of England)More images |
| Church of Saint Mary | Northchurch | Church | Saxon | 29 July 1950 | SP9744008833 51°46′11″N 0°35′21″W﻿ / ﻿51.769703°N 0.589283°W﻿ / 51.769703; -0.589283﻿ (Church of Saint Mary) | 1348470 | Church of Saint MaryMore images |
| Church of St Peter St Paul (Church of England) | Tring | Parish Church | 13th century | 21 September 1951 | SP9243611495 51°47′40″N 0°39′40″W﻿ / ﻿51.794478°N 0.661072°W﻿ / 51.794478; -0.661072﻿ (Church of St Peter St Paul (Church of England)) | 1084356 | Church of St Peter St Paul (Church of England)More images |
| Church of St Mary (Church of England) | Puttenham | Parish Church | Early 14th century | 30 November 1966 | SP8852014927 51°49′33″N 0°43′01″W﻿ / ﻿51.82596°N 0.716963°W﻿ / 51.82596; -0.716963﻿ (Church of St Mary (Church of England)) | 1076690 | Church of St Mary (Church of England)More images |
| Church of St Mary | Hemel Hempstead | Church | 1140–80 | 18 June 1948 | TL0550307813 51°45′33″N 0°28′22″W﻿ / ﻿51.759075°N 0.472785°W﻿ / 51.759075; -0.472785﻿ (Church of St Mary) | 1078099 | Church of St MaryMore images |
| 130–136 Piccott's End | Piccotts End | Row | 15th century | 20 May 1954 | TL0513709107 51°46′15″N 0°28′40″W﻿ / ﻿51.770774°N 0.477694°W﻿ / 51.770774; -0.477694﻿ (130–136 Piccott's End) | 1342208 | 130–136 Piccott's EndMore images |

## East Hertfordshire

| Name | Location | Type | Completed | Date designated | Grid ref. Geo-coordinates | Entry number | Image |
| Church of St George | Anstey | Parish Church | Late 12th century | 22 February 1967 | TL4042832890 51°58′36″N 0°02′35″E﻿ / ﻿51.976738°N 0.043123°E﻿ / 51.976738; 0.043123﻿ (Church of St George) | 1101870 | Church of St GeorgeMore images |
| Parish Church of St Lawrence | Ardeley | Parish Church | 13th century or earlier | 22 February 1967 | TL3081727138 51°55′39″N 0°05′56″W﻿ / ﻿51.927395°N 0.098907°W﻿ / 51.927395; -0.098907﻿ (Parish Church of St Lawrence) | 1174231 | Parish Church of St LawrenceMore images |
| Parish Church of St Mary | Aspenden | Parish Church | 11th century | 22 February 1967 | TL3536428392 51°56′15″N 0°01′56″W﻿ / ﻿51.937577°N 0.032328°W﻿ / 51.937577; -0.032328﻿ (Parish Church of St Mary) | 1347966 | Parish Church of St MaryMore images |
| Aston Bury Manor | Aston | Manor House | Mid 17th century | 20 October 1952 | TL2760621702 51°52′45″N 0°08′51″W﻿ / ﻿51.879291°N 0.14759°W﻿ / 51.879291; -0.14759﻿ (Aston Bury Manor) | 1174988 | Aston Bury ManorMore images |
| Church of St Peter | Benington | Church | Late 13th century or early 14th century | 24 November 1966 | TL2969223579 51°53′44″N 0°07′00″W﻿ / ﻿51.895677°N 0.116598°W﻿ / 51.895677; -0.116598﻿ (Church of St Peter) | 1101403 | Church of St PeterMore images |
| Remains of Benington Castle (in Grounds of the Lordship 15 Metres to South East of House) | Benington | Castle | 1130S | 24 November 1966 | TL2968023633 51°53′46″N 0°07′00″W﻿ / ﻿51.896165°N 0.116752°W﻿ / 51.896165; -0.116752﻿ (Remains of Benington Castle (in Grounds of the Lordship 15 Metres to South East of House)) | 1175349 | Remains of Benington Castle (in Grounds of the Lordship 15 Metres to South East of House)More images |
| Church of St Michael | Bishop's Stortford | Church | Early 15th century | 18 October 1949 | TL4862321336 51°52′15″N 0°09′27″E﻿ / ﻿51.870803°N 0.157363°E﻿ / 51.870803; 0.157363﻿ (Church of St Michael) | 1101613 | Church of St MichaelMore images |
| Remains of Waytemore Castle | Bishop's Stortford | Keep | 12th century | 18 October 1949 | TL4897621447 51°52′18″N 0°09′45″E﻿ / ﻿51.871706°N 0.162535°E﻿ / 51.871706; 0.162535﻿ (Remains of Waytemore Castle) | 1101603 | Remains of Waytemore CastleMore images |
| Church of St Mary the Virgin | Braughing | Church | 1971 | 22 February 1967 | TL3961925204 51°54′28″N 0°01′42″E﻿ / ﻿51.907882°N 0.028235°E﻿ / 51.907882; 0.028235﻿ (Church of St Mary the Virgin) | 1347516 | Church of St Mary the VirginMore images |
| Brent Pelham Hall, Gate Piers and Boundary Wall from North West Front of Hall, turning to South West and then South East to Gate | Brent Pelham | House | Late 17th century | 19 October 1951 | TL4335830863 51°57′28″N 0°05′06″E﻿ / ﻿51.957778°N 0.084906°E﻿ / 51.957778; 0.084906﻿ (Brent Pelham Hall, Gate Piers and Boundary Wall from North West Front of Hall, turning to South West and then South East to Gate) | 1101916 | Brent Pelham Hall, Gate Piers and Boundary Wall from North West Front of Hall, turning to South West and then South East to Gate |
| Church of St Peter | Buntingford | Church | c. 1615 | 22 February 1967 | TL3630729324 51°56′45″N 0°01′06″W﻿ / ﻿51.945721°N 0.01825°W﻿ / 51.945721; -0.01825﻿ (Church of St Peter) | 1348000 | Church of St PeterMore images |
| The Lordship | Cottered | Farmhouse | Early-mid 15th century | 19 October 1951 | TL3189829194 51°56′44″N 0°04′57″W﻿ / ﻿51.945615°N 0.082408°W﻿ / 51.945615; -0.082408﻿ (The Lordship) | 1348017 | Upload Photo |
| Johnston Monument | Gilston | Commemorative Monument | 1923 | 19 September 1984 | TL4395213512 51°48′06″N 0°05′11″E﻿ / ﻿51.801728°N 0.086314°E﻿ / 51.801728; 0.086314﻿ (Johnston Monument) | 1101277 | Upload Photo |
| Church of St Mary | Gilston | Church | Early 13th century | 24 January 1967 | TL4398113526 51°48′07″N 0°05′12″E﻿ / ﻿51.801846°N 0.08674°E﻿ / 51.801846; 0.08674﻿ (Church of St Mary) | 1308248 | Church of St MaryMore images |
| Balls Park | Hertford | House | Early 18th century | 10 February 1950 | TL3371111928 51°47′24″N 0°03′46″W﻿ / ﻿51.790035°N 0.062725°W﻿ / 51.790035; -0.062725﻿ (Balls Park) | 1269013 | Balls ParkMore images |
| Church of St Leonard | Bengeo, Hertford | Church | 1695 | 10 February 1950 | TL3301813638 51°48′20″N 0°04′20″W﻿ / ﻿51.805566°N 0.072112°W﻿ / 51.805566; -0.072112﻿ (Church of St Leonard) | 1268717 | Church of St LeonardMore images |
| Friends Meeting House | Hertford | Friends Meeting House | 1670 | 9 May 2019 | TL3281212705 51°47′50″N 0°04′32″W﻿ / ﻿51.797231°N 0.075455°W﻿ / 51.797231; -0.075455﻿ (Friends Meeting House) | 1268759 | Friends Meeting HouseMore images |
| Gatehouse to Hertford Castle | Hertford | Castle | Later | 10 February 1950 | TL3245712465 51°47′43″N 0°04′50″W﻿ / ﻿51.795158°N 0.080691°W﻿ / 51.795158; -0.080691﻿ (Gatehouse to Hertford Castle) | 1269027 | Gatehouse to Hertford CastleMore images |
| Shire Hall | Hertford | Assembly Rooms | 1767–1771 | 10 February 1950 | TL3267212596 51°47′47″N 0°04′39″W﻿ / ﻿51.796285°N 0.077525°W﻿ / 51.796285; -0.077525﻿ (Shire Hall) | 1268930 | Shire HallMore images |
| Church of St Mary Little Hormead | Little Hormead | Parish Church | 11th century | 22 February 1967 | TL3984929104 51°56′34″N 0°01′59″E﻿ / ﻿51.942866°N 0.033159°E﻿ / 51.942866; 0.033159﻿ (Church of St Mary Little Hormead) | 1176874 | Church of St Mary Little HormeadMore images |
| Hunsdon House | Hunsdon | Country House | Mid 15th century | 4 December 1951 | TL4190412744 51°47′43″N 0°03′23″E﻿ / ﻿51.79535°N 0.056319°E﻿ / 51.79535; 0.056319﻿ (Hunsdon House) | 1347687 | Hunsdon HouseMore images |
| Parish Church of St Dunstan | Hunsdon | Parish Church | Early 14th century | 24 January 1967 | TL4181512710 51°47′42″N 0°03′18″E﻿ / ﻿51.795067°N 0.055015°E﻿ / 51.795067; 0.055015﻿ (Parish Church of St Dunstan) | 1101973 | Parish Church of St DunstanMore images |
| Parish Church of St Cecilia | Church End, Little Hadham | Church | Medieval | 22 February 1967 | TL4462022778 51°53′05″N 0°06′00″E﻿ / ﻿51.88481°N 0.099866°E﻿ / 51.88481; 0.099866﻿ (Parish Church of St Cecilia) | 1290608 | Parish Church of St CeciliaMore images |
| Parish Church of All Saints | Little Munden | Parish Church | 11th century | 24 January 1967 | TL3345121887 51°52′47″N 0°03′46″W﻿ / ﻿51.879587°N 0.062655°W﻿ / 51.879587; -0.062655﻿ (Parish Church of All Saints) | 1102260 | Parish Church of All SaintsMore images |
| Boundary Wall at Yewtree Farm | Hadham Cross, Much Hadham | Boundary Wall | Mid-late 19th century | 30 April 1985 | TL4266918553 51°50′50″N 0°04′11″E﻿ / ﻿51.84735°N 0.069795°E﻿ / 51.84735; 0.069795﻿ (Boundary Wall at Yewtree Farm) | 1289112 | Upload Photo |
| Moor Place | Kettle Green, Much Hadham | Country House | 1775-9 | 22 February 1967 | TL4215318918 51°51′03″N 0°03′45″E﻿ / ﻿51.850761°N 0.062459°E﻿ / 51.850761; 0.062459﻿ (Moor Place) | 1289132 | Moor PlaceMore images |
| Much Hadham Hall | Much Hadham | Country House | 1726-9 | 22 February 1967 | TL4283219368 51°51′17″N 0°04′21″E﻿ / ﻿51.854632°N 0.072496°E﻿ / 51.854632; 0.072496﻿ (Much Hadham Hall) | 1212633 | Much Hadham HallMore images |
| Parish Church of St Andrew | Much Hadham | Parish Church | 12th century | 22 February 1967 | TL4303319674 51°51′26″N 0°04′32″E﻿ / ﻿51.85733°N 0.075539°E﻿ / 51.85733; 0.075539﻿ (Parish Church of St Andrew) | 1289691 | Parish Church of St AndrewMore images |
| Parish Church of Great St Mary's | Sawbridgeworth | Anglican Church | 13th century | 6 June 1952 | TL4850014822 51°48′44″N 0°09′10″E﻿ / ﻿51.81231°N 0.152784°E﻿ / 51.81231; 0.152784﻿ (Parish Church of Great St Mary's) | 1101668 | Parish Church of Great St Mary'sMore images |
| Church of St Mary | Standon | Church | 15th century | 24 January 1967 | TL3964922257 51°52′53″N 0°01′39″E﻿ / ﻿51.881395°N 0.027478°E﻿ / 51.881395; 0.027478﻿ (Church of St Mary) | 1102348 | Church of St MaryMore images |
| Old Church of St James | Stanstead Abbotts | Church | 12th century | 24 January 1967 | TL3997211061 51°46′51″N 0°01′40″E﻿ / ﻿51.780714°N 0.027644°E﻿ / 51.780714; 0.027644﻿ (Old Church of St James) | 1078730 | Old Church of St JamesMore images |
| Rye House Gatehouse | Lea Valley Park, Stanstead Abbotts | Moat | 15th century | 4 December 1951 | TL3857309955 51°46′16″N 0°00′25″E﻿ / ﻿51.771124°N 0.006936°E﻿ / 51.771124; 0.006936﻿ (Rye House Gatehouse) | 1341877 | Rye House GatehouseMore images |
| Church of St Peter | Tewin | Church | 11th century | 24 November 1966 | TL2681214256 51°48′45″N 0°09′43″W﻿ / ﻿51.81256°N 0.161846°W﻿ / 51.81256; -0.161846﻿ (Church of St Peter) | 1341477 | Church of St PeterMore images |
| Parish Church of St James the Great | Thorley | Moat | 1834 | 22 February 1967 | TL4760418844 51°50′55″N 0°08′29″E﻿ / ﻿51.848683°N 0.14151°E﻿ / 51.848683; 0.14151﻿ (Parish Church of St James the Great) | 1213947 | Parish Church of St James the GreatMore images |
| Parish Church of St Mary the Virgin | Walkern | Parish Church | Saxon | 24 November 1966 | TL2928626565 51°55′21″N 0°07′17″W﻿ / ﻿51.922603°N 0.121375°W﻿ / 51.922603; -0.121375﻿ (Parish Church of St Mary the Virgin) | 1101384 | Parish Church of St Mary the VirginMore images |
| Church of St Mary | Ware | Church | 1982 | 8 May 1950 | TL3568014430 51°48′43″N 0°02′00″W﻿ / ﻿51.812043°N 0.033216°W﻿ / 51.812043; -0.033216﻿ (Church of St Mary) | 1217410 | Church of St MaryMore images |
| Grotto between Nos 28 and 34 (Scott's Grotto) | Ware | Grotto | 1764–1768 | 8 May 1950 | TL3568813832 51°48′24″N 0°02′00″W﻿ / ﻿51.806668°N 0.033334°W﻿ / 51.806668; -0.033334﻿ (Grotto between Nos 28 and 34 (Scott's Grotto)) | 1238171 | Grotto between Nos 28 and 34 (Scott's Grotto)More images |
| Place House | Ware | House | 17th century | 8 May 1950 | TL3590314372 51°48′41″N 0°01′48″W﻿ / ﻿51.811468°N 0.030006°W﻿ / 51.811468; -0.030006﻿ (Place House) | 1275417 | Place HouseMore images |
| The Priory (Ware Town Council Offices and Community Centre) | Ware | Kitchen | 1993-4 | 8 May 1950 | TL3555114312 51°48′40″N 0°02′06″W﻿ / ﻿51.811014°N 0.035133°W﻿ / 51.811014; -0.035133﻿ (The Priory (Ware Town Council Offices and Community Centre)) | 1237950 | The Priory (Ware Town Council Offices and Community Centre)More images |
| Woodhall Park (Heath Mount School) | Woodhall Park, Watton-at-Stone | Country House | 1777–82 | 20 October 1952 | TL3164518896 51°51′11″N 0°05′24″W﻿ / ﻿51.853139°N 0.090016°W﻿ / 51.853139; -0.090016﻿ (Woodhall Park (Heath Mount School)) | 1031363 | Woodhall Park (Heath Mount School)More images |
| Church of St Giles | Wyddial | Parish Church | 14th century | 22 February 1967 | TL3741431763 51°58′03″N 0°00′04″W﻿ / ﻿51.967364°N 0.00118°W﻿ / 51.967364; -0.00118﻿ (Church of St Giles) | 1101811 | Church of St GilesMore images |

## Hertsmere

| Name | Location | Type | Completed | Date designated | Grid ref. Geo-coordinates | Entry number | Image |
| Church of St John the Baptist | Aldenham | Parish Church | 12th century | 1 September 1953 | TQ1398898463 51°40′24″N 0°21′11″W﻿ / ﻿51.673382°N 0.352955°W﻿ / 51.673382; -0.352955﻿ (Church of St John the Baptist) | 1103642 | Church of St John the BaptistMore images |
| Tyttenhanger House | Ridge | Country House | c. 1655 | 25 February 1952 | TL1914604655 51°43′41″N 0°16′35″W﻿ / ﻿51.727961°N 0.276285°W﻿ / 51.727961; -0.276285﻿ (Tyttenhanger House) | 1174935 | Tyttenhanger HouseMore images |
| Church of St Giles | South Mimms | Parish Church | 13th century | 20 May 1949 | TL2223101196 51°41′46″N 0°13′58″W﻿ / ﻿51.696212°N 0.232852°W﻿ / 51.696212; -0.232852﻿ (Church of St Giles) | 1174342 | Church of St GilesMore images |

## North Hertfordshire

| Name | Location | Type | Completed | Date designated | Grid ref. Geo-coordinates | Entry number | Image |
| Church of St Mary the Virgin | Ashwell | Parish Church | 14th century | 27 May 1968 | TL2671039779 52°02′31″N 0°09′14″W﻿ / ﻿52.041937°N 0.153938°W﻿ / 52.041937; -0.153938﻿ (Church of St Mary the Virgin) | 1102715 | Church of St Mary the VirginMore images |
| Church of St Mary Magdalene | Barkway | Parish Church | 13th century | 27 May 1968 | TL3828035610 52°00′06″N 0°00′47″E﻿ / ﻿52.001716°N 0.012966°E﻿ / 52.001716; 0.012966﻿ (Church of St Mary Magdalene) | 1102624 | Church of St Mary MagdaleneMore images |
| Church of St Mary | Graveley | Parish Church | 12th century | 27 May 1968 | TL2348928125 51°56′17″N 0°12′18″W﻿ / ﻿51.937937°N 0.205068°W﻿ / 51.937937; -0.205068﻿ (Church of St Mary) | 1102525 | Church of St MaryMore images |
| Church of St Katherine of Alexandria | Ickleford | Parish Church | Mid 12th century | 27 May 1968 | TL1824031641 51°58′14″N 0°16′49″W﻿ / ﻿51.970673°N 0.280176°W﻿ / 51.970673; -0.280176﻿ (Church of St Katherine of Alexandria) | 1295821 | Church of St Katherine of AlexandriaMore images |
| Parish Church of St Peter and St Paul | Kimpton | Parish Church | c. 1200 | 27 May 1968 | TL1775818526 51°51′10″N 0°17′30″W﻿ / ﻿51.852913°N 0.291668°W﻿ / 51.852913; -0.291668﻿ (Parish Church of St Peter and St Paul) | 1102783 | Parish Church of St Peter and St PaulMore images |
| Church of St Mary | King's Walden | Parish Church | 12th century to 13th century | 27 May 1968 | TL1602323507 51°53′53″N 0°18′55″W﻿ / ﻿51.89804°N 0.315175°W﻿ / 51.89804; -0.315175﻿ (Church of St Mary) | 1102475 | Church of St MaryMore images |
| Church of St Mary and St Thomas | Old Knebworth | Parish Church | c. 1150 | 27 May 1968 | TL2308521007 51°52′27″N 0°12′49″W﻿ / ﻿51.874061°N 0.213482°W﻿ / 51.874061; -0.213482﻿ (Church of St Mary and St Thomas) | 1295771 | Church of St Mary and St ThomasMore images |
| Church of St Mary Magdalene | Great Offley | Parish Church | Early 13th century | 27 May 1968 | TL1453326816 51°55′41″N 0°20′09″W﻿ / ﻿51.928086°N 0.335721°W﻿ / 51.928086; -0.335721﻿ (Church of St Mary Magdalene) | 1347084 | Church of St Mary MagdaleneMore images |
| Church of St Mary | Pirton | Motte and Bailey | Early 12th century | 27 May 1968 | TL1469431661 51°58′18″N 0°19′54″W﻿ / ﻿51.971595°N 0.331765°W﻿ / 51.971595; -0.331765﻿ (Church of St Mary) | 1347110 | Church of St MaryMore images |
| High Down House with Buildings and Walls around Courtyard on North Side | Pirton | Courtyard House | 1599 | 9 June 1952 | TL1439530544 51°57′42″N 0°20′11″W﻿ / ﻿51.961618°N 0.336488°W﻿ / 51.961618; -0.336488﻿ (High Down House with Buildings and Walls around Courtyard on North Side) | 1175442 | High Down House with Buildings and Walls around Courtyard on North SideMore images |
| Church of St Mary | Reed | Parish Church | Early 11th century | 27 May 1968 | TL3613235748 52°00′13″N 0°01′06″W﻿ / ﻿52.003486°N 0.018249°W﻿ / 52.003486; -0.018249﻿ (Church of St Mary) | 1102559 | Church of St MaryMore images |
| Church of St John the Baptist | Royston | Church | Second Half 12th century | 14 June 1964 | TL3576240678 52°02′52″N 0°01′18″W﻿ / ﻿52.047874°N 0.021682°W﻿ / 52.047874; -0.021682﻿ (Church of St John the Baptist) | 1295575 | Church of St John the BaptistMore images |
| Royston Cave | Royston | Cave | 13th century OR 14th century | 14 June 1976 | TL3562940711 52°02′54″N 0°01′25″W﻿ / ﻿52.048203°N 0.023607°W﻿ / 52.048203; -0.023607﻿ (Royston Cave) | 1102013 | Royston CaveMore images |
| 18 Melbourn Street | Royston | House | 18th century | 14 June 1964 | TL3576340737 52°02′54″N 0°01′18″W﻿ / ﻿52.048404°N 0.021644°W﻿ / 52.048404; -0.021644﻿ (18 Melbourn Street) | 1174750 | 18 Melbourn StreetMore images |
| 23 Kneesworth Street | Royston | House | c.1700 remodelling of earlier house | 14 June 1964 | TL3556640818 52°02′57″N 0°01′28″W﻿ / ﻿52.04918°N 0.024483°W﻿ / 52.04918; -0.024483﻿ (23 Kneesworth Street) | 1295658 | 23 Kneesworth StreetMore images |
| Church of All Saints | Sandon | Parish Church | 1348 | 27 May 1968 | TL3223734526 51°59′36″N 0°04′32″W﻿ / ﻿51.993446°N 0.075427°W﻿ / 51.993446; -0.075427﻿ (Church of All Saints) | 1176178 | Church of All SaintsMore images |
| Almshoe Bury | St Ippolyts | Farmhouse | c. 1374 | 27 May 1968 | TL2067125286 51°54′47″N 0°14′49″W﻿ / ﻿51.913041°N 0.247034°W﻿ / 51.913041; -0.247034﻿ (Almshoe Bury) | 1102513 | Almshoe BuryMore images |
| Church of St Ippolyts | St Ippolyts | Parish Church | 11th century | 27 May 1968 | TL1979227127 51°55′47″N 0°15′33″W﻿ / ﻿51.929775°N 0.259167°W﻿ / 51.929775; -0.259167﻿ (Church of St Ippolyts) | 1347411 | Church of St IppolytsMore images |
| Church of All Saints | St Paul's Walden | Parish Church | 12th century or 13th century | 27 May 1968 | TL1925022284 51°53′11″N 0°16′07″W﻿ / ﻿51.886369°N 0.26872°W﻿ / 51.886369; -0.26872﻿ (Church of All Saints) | 1347042 | Church of All SaintsMore images |
| Church of the Holy Trinity | Church End, Weston | Parish Church | 12th century | 27 May 1968 | TL2658829952 51°57′13″N 0°09′34″W﻿ / ﻿51.953659°N 0.159341°W﻿ / 51.953659; -0.159341﻿ (Church of the Holy Trinity) | 1347414 | Church of the Holy TrinityMore images |
| Church of St Mary the Virgin | Great Wymondley | Parish Church | 12th century | 27 May 1968 | TL2147528530 51°56′31″N 0°14′03″W﻿ / ﻿51.942019°N 0.234207°W﻿ / 51.942019; -0.234207﻿ (Church of St Mary the Virgin) | 1102497 | Church of St Mary the VirginMore images |
| The Priory | Little Wymondley | House | c1536 after 1536 | 27 May 1968 | TL2186327974 51°56′13″N 0°13′44″W﻿ / ﻿51.936938°N 0.228762°W﻿ / 51.936938; -0.228762﻿ (The Priory) | 1102499 | Upload Photo |
| Wymondley Bury | Little Wymondley | Farmhouse | 16th century | 27 May 1968 | TL2167827074 51°55′44″N 0°13′54″W﻿ / ﻿51.928891°N 0.23177°W﻿ / 51.928891; -0.23177﻿ (Wymondley Bury) | 1347446 | Upload Photo |
| Church of Saint Mary | Hitchin | Parish Church | 12th century | 13 April 1951 | TL1849829120 51°56′53″N 0°16′38″W﻿ / ﻿51.947963°N 0.277291°W﻿ / 51.947963; -0.277291﻿ (Church of Saint Mary) | 1296273 | Church of Saint MaryMore images |
| Church of St. Mary the Virgin | Baldock | Church | 14th century | 8 November 1949 | TL2439633905 51°59′23″N 0°11′23″W﻿ / ﻿51.989676°N 0.18979°W﻿ / 51.989676; -0.18979﻿ (Church of St. Mary the Virgin) | 1347611 | Church of St. Mary the VirginMore images |
| The Priory | Hitchin | Country House | 17th century | 13 April 1951 | TL1838328793 51°56′42″N 0°16′45″W﻿ / ﻿51.945048°N 0.279076°W﻿ / 51.945048; -0.279076﻿ (The Priory) | 1102211 | The PrioryMore images |

## St Albans

| Name | Location | Type | Completed | Date designated | Grid ref. Geo-coordinates | Entry number | Image |
| Rothamsted Manor House | Hatching Green, Harpenden | Manor House | 16th century | 19 October 1953 | TL1252613169 51°48′21″N 0°22′10″W﻿ / ﻿51.805846°N 0.369338°W﻿ / 51.805846; -0.369338﻿ (Rothamsted Manor House) | 1347199 | Rothamsted Manor HouseMore images |
| Parish Church of St Mary | Redbourn Common, Redbourn | Parish Church | c. 1100 | 19 October 1953 | TL0999411570 51°47′31″N 0°24′24″W﻿ / ﻿51.791979°N 0.406553°W﻿ / 51.791979; -0.406553﻿ (Parish Church of St Mary) | 1295584 | Parish Church of St MaryMore images |
| Remains of Old Gorhambury House | St Michael, St Albans | Country House | 1563 | 19 October 1953 | TL1102907616 51°45′22″N 0°23′34″W﻿ / ﻿51.756238°N 0.392815°W﻿ / 51.756238; -0.392815﻿ (Remains of Old Gorhambury House) | 1175197 | Remains of Old Gorhambury HouseMore images |
| Church of St Helen | Wheathampstead | Parish Church | Pre-Conquest | 19 October 1953 | TL1765314025 51°48′45″N 0°17′41″W﻿ / ﻿51.812485°N 0.294721°W﻿ / 51.812485; -0.294721﻿ (Church of St Helen) | 1103657 | Church of St HelenMore images |
| Mackerye End | Wheathampstead | Manor House | 1665 | 19 October 1953 | TL1561015582 51°49′37″N 0°19′26″W﻿ / ﻿51.826904°N 0.323824°W﻿ / 51.826904; -0.323824﻿ (Mackerye End) | 1103672 | Mackerye EndMore images |
| Abbey Church of St Alban | St Albans | Abbey | 1077–1088 | 8 May 1950 | TL1445907090 51°45′03″N 0°20′36″W﻿ / ﻿51.750821°N 0.343316°W﻿ / 51.750821; -0.343316﻿ (Abbey Church of St Alban) | 1103163 | Abbey Church of St AlbanMore images |
| Church of St Michael's | St Albans | Church | Founded mid 10th century | 8 May 1950 | TL1357207304 51°45′11″N 0°21′22″W﻿ / ﻿51.752924°N 0.35609°W﻿ / 51.752924; -0.35609﻿ (Church of St Michael's) | 1103089 | Church of St Michael'sMore images |
| Clock Tower | St Albans | Bell Tower | 1403–1412 | 8 May 1950 | TL1465107150 51°45′05″N 0°20′26″W﻿ / ﻿51.751321°N 0.340517°W﻿ / 51.751321; -0.340517﻿ (Clock Tower) | 1103127 | Clock TowerMore images |
| The Abbey Gate | St Albans | Gatehouse | 14th century | 8 May 1950 | TL1439507106 51°45′04″N 0°20′39″W﻿ / ﻿51.750978°N 0.344238°W﻿ / 51.750978; -0.344238﻿ (The Abbey Gate) | 1103077 | The Abbey GateMore images |
| Verulamium | St Albans | Ruin | Roman | 8 May 1950 | TL1363407286 51°45′10″N 0°21′19″W﻿ / ﻿51.75275°N 0.355198°W﻿ / 51.75275; -0.355198﻿ (Verulamium) | 1103030 | VerulamiumMore images |

## Stevenage

| Name | Location | Type | Completed | Date designated | Grid ref. Geo-coordinates | Entry number | Image |
| Church of Saint Nicholas | Stevenage | Church | c. 1125 | 18 February 1948 | TL2407426207 51°55′14″N 0°11′50″W﻿ / ﻿51.920571°N 0.197254°W﻿ / 51.920571; -0.197254﻿ (Church of Saint Nicholas) | 1176923 | Church of Saint NicholasMore images |
| Rooks Nest House (Howards) | Stevenage | House | 18th century | 30 September 1976 | TL2443826721 51°55′30″N 0°11′30″W﻿ / ﻿51.925109°N 0.191778°W﻿ / 51.925109; -0.191778﻿ (Rooks Nest House (Howards)) | 1176972 | Rooks Nest House (Howards)More images |

## Three Rivers

| Name | Location | Type | Completed | Date designated | Grid ref. Geo-coordinates | Entry number | Image |
| Church of St Lawrence the Martyr | Abbots Langley | Parish Church | Late 12th century | 1 September 1953 | TL0948202189 51°42′28″N 0°25′01″W﻿ / ﻿51.707766°N 0.416924°W﻿ / 51.707766; -0.416924﻿ (Church of St Lawrence the Martyr) | 1296433 | Church of St Lawrence the MartyrMore images |
| The Orchard | Chorleywood | House | 1899–1900 | 16 July 1975 | TQ0193295698 51°39′03″N 0°31′41″W﻿ / ﻿51.650844°N 0.528044°W﻿ / 51.650844; -0.528044﻿ (The Orchard) | 1348234 | The OrchardMore images |
| Moor Park and Orangery/Stable Block | Rickmansworth | Country House | Late 17th century | 26 July 1951 | TQ0745893316 51°37′42″N 0°26′56″W﻿ / ﻿51.628407°N 0.448931°W﻿ / 51.628407; -0.448931﻿ (Moor Park and Orangery/Stable Block) | 1173698 | Moor Park and Orangery/Stable BlockMore images |

## Watford

| Name | Location | Type | Completed | Date designated | Grid ref. Geo-coordinates | Entry number | Image |
| Church of St Mary | Watford | Church | 13th century | 26 August 1952 | TQ1107696316 51°39′17″N 0°23′45″W﻿ / ﻿51.654668°N 0.395731°W﻿ / 51.654668; -0.395731﻿ (Church of St Mary) | 1101120 | Church of St MaryMore images |
| Holy Rood Church | Watford | Roman Catholic Church | 1879–1900 | 12 September 1980 | TQ1087796327 51°39′17″N 0°23′55″W﻿ / ﻿51.654807°N 0.398603°W﻿ / 51.654807; -0.398603﻿ (Holy Rood Church) | 1101104 | Holy Rood ChurchMore images |

## Welwyn Hatfield

| Name | Location | Type | Completed | Date designated | Grid ref. Geo-coordinates | Entry number | Image |
| New Saint Lawrence Church | Ayot St. Lawrence | Church | 1778 | 24 January 1967 | TL1917116895 51°50′17″N 0°16′18″W﻿ / ﻿51.837956°N 0.271724°W﻿ / 51.837956; -0.271724﻿ (New Saint Lawrence Church) | 1348106 | New Saint Lawrence ChurchMore images |
| Brocket Hall | Lemsford | Country House | c. 1760 | 6 February 1952 | TL2140813036 51°48′10″N 0°14′26″W﻿ / ﻿51.802795°N 0.240624°W﻿ / 51.802795; -0.240624﻿ (Brocket Hall) | 1100987 | Brocket HallMore images |
| Hatfield House | Old Hatfield, Hatfield | Country House | 1607–1612 | 6 February 1952 | TL2371508394 51°45′38″N 0°12′32″W﻿ / ﻿51.760574°N 0.208836°W﻿ / 51.760574; -0.208836﻿ (Hatfield House) | 1173363 | Hatfield HouseMore images |
| Parish Church of St Etheldreda | Hatfield | Church | 13th century | 30 March 1966 | TL2350508488 51°45′41″N 0°12′43″W﻿ / ﻿51.761465°N 0.211844°W﻿ / 51.761465; -0.211844﻿ (Parish Church of St Etheldreda) | 1348124 | Parish Church of St EtheldredaMore images |
| The Palace | Old Hatfield, Hatfield | Bishops Palace | c. 1480 | 6 February 1952 | TL2357808460 51°45′40″N 0°12′39″W﻿ / ﻿51.761197°N 0.210796°W﻿ / 51.761197; -0.210796﻿ (The Palace) | 1348152 | The PalaceMore images |
| North Mymms Park with Adjoining Garden Walls and Ha Ha | North Mymms | Country House | c. 1600 | 6 February 1952 | TL2177604267 51°43′26″N 0°14′18″W﻿ / ﻿51.72391°N 0.23836°W﻿ / 51.72391; -0.23836﻿ (North Mymms Park with Adjoining Garden Walls and Ha Ha) | 1100946 | North Mymms Park with Adjoining Garden Walls and Ha HaMore images |