Harley Street Conservation Area (Westminster)

About the Harley Street Conservation Area

The Harley Street Conservation Area covers about 53 hectares and was designated by City of Westminster in 1990. Inside the boundary are 234 listed buildings (3 Grade I, 31 Grade II*, 200 Grade II). The most significant is Chandos House, Grade I. 1 Article 4 direction over the area removes further householder rights, on top of the conservation area limits below. 4 Tree Preservation Order records overlap the area; every other tree here still needs six weeks’ notice before work.

What changes inside the conservation area

Conservation areas are “Article 2(3) land”. You keep most permitted development rights, but these are removed or tightened.

ProjectElsewhereIn Harley Street CA

Rear extensionElsewhere: 3 m · 6 m with PANo 6 m / 8 m prior approval
Two-storey extensionElsewhere: 3 mNeeds planning permission
Side extensionElsewhere: Half the widthNeeds planning permission
Loft conversionElsewhere: 50 m³Needs planning permission
Garden roomElsewhere: 2.5 m high by boundariesNot beside the house
PorchElsewhere: 3 m²Same limits
Solar panelsElsewhere: 0.2 m projectionSame limits
Air source heat pumpElsewhere: 1 unitNot facing the road
Fences, walls and gatesElsewhere: 2 m · 1 m by a roadSame limits
External claddingElsewhere: Matching materialsNeeds planning permission
Tree workElsewhere: No notice6 weeks’ notice to the council
Demolition (over 115 m³)Elsewhere: AllowedNeeds planning permission

Limits for a semi-detached house under the GPDO 2015. An Article 4 direction can remove more.

Article 4 directions here

These overlap the conservation area. Householder directions remove more of the rights above; change-of-use ones don’t affect extending a house.

Article 4 Basement Development Permitted Rights RemovedHouseholder works
Article 4 Direction Class E To C3 In Central Activities ZoneChange of use

Listed buildings in the conservation area

Any work affecting these needs listed building consent, inside or out. Each links to its entry on the National Heritage List.

Chandos HouseGrade I
Church of All Souls, Langham PlaceGrade I
Church of St PetersGrade I
106, Harley Street W1Grade II*
107 and 109, Harley Street W1Grade II*
115, Harley Street W1Grade II*
121, Harley Street W1Grade II*
13, Harley Street W1Grade II*
17-21, Portland Place W1Grade II*
18, Cavendish Square W1Grade II*
26-30, Portland Place W1Grade II*
27-35 Portland PlaceGrade II*
3, Cavendish Square W1Grade II*
34-52, Portland Place W1Grade II*
37, Harley Street W1Grade II*
41-47, Portland Place W1Grade II*
5-13, Mansfield Street W1Grade II*
56 and 58, Portland Place W1Grade II*
59-67, Portland Place W1Grade II*
61 and 63, New Cavendish Street W1Grade II*
69 and 71, Harley Street W1Grade II*
75, Harley Street W1Grade II*
75, Portland Place W1Grade II*
77, Harley Street W1Grade II*

Show all 234 listed buildings ↓

78, Harley StreetGrade II*
82, NEW CAVENDISH STREET W1 (See details for further address information)Grade II*
83 and 85, Harley Street W1Grade II*
88, Harley Street W1Grade II*
92 and 94, Harley Street W1Grade II*
92-96, Portland Place W1Grade II*
BridgeGrade II*
Broadcasting HouseGrade II*
The Royal Institute of British ArchitectsGrade II*
Winged Figure, including plinth and applied letteringGrade II*
1 and 1a, Cavendish Square W1Grade II
1 and 3, Riding House Street W1Grade II
1-6, Upper Wimpole Street W1Grade II
1, 3 and 5, Harley StreetGrade II
1, Bentinck Street W1Grade II
10, Duchess Street W1Grade II
10, Wimpole Street W1Grade II
100 and 102, Harley Street W1Grade II
101 Harley StreetGrade II
104, Harley Street W1Grade II
108, Harley Street W1Grade II
10a, 11 and 12, Chandos Street W1Grade II
11, Welbeck Street W1Grade II
110 and 112, Harley Street W1Grade II
111 and 113, Harley Street W1Grade II
115a, Harley Street W1Grade II
12-14, Welbeck Street W1Grade II
12, Cavendish Place W1Grade II
12, Devonshire Street W1Grade II
12, Weymouth Street W1Grade II
120 and 122, Harley Street W1Grade II
126-150, Harley Street W1Grade II
126, Great Portland Street W1Grade II
127-131, Harley Street W1Grade II
13-16, Wimpole Street W1Grade II
13, Devonshire Mews West W1Grade II
13, Devonshire Place W1Grade II
135-145, Harley Street W1Grade II
14 and 16, New Cavendish Street W1Grade II
14 Cavendish PlaceGrade II
14-17, Devonshire Place W1Grade II
14-18, DEVONSHIRE STREET W1 (See details for further address information)Grade II
14-23, Upper Wimpole Street W1Grade II
15 and 17, Harley StreetGrade II
15, Cavendish Square W1Grade II
15, Mansfield Street W1Grade II
16, Cavendish Square W1Grade II
17, Cavendish Square W1Grade II
17, Duchess Mews W1Grade II
17, Welbeck Street W1Grade II
17, Wimpole Street W1Grade II
18-20, Wimpole Street W1Grade II
19, Bulstrode Street W1Grade II
19, Duchess Mews W1Grade II
2-6, Chandos Street W1Grade II
2, Harley Street W1Grade II
2, Hinde Street W1Grade II
2, Nottingham Street W1Grade II
21 and 22, Welbeck Street W1Grade II
21, Bulstrode Street W1Grade II
21, Duchess Mews W1Grade II
21, Harley Street W1Grade II
22, Weymouth StreetGrade II
23 and 24, Welbeck Street W1Grade II
23-25, Devonshire Place W1Grade II
23, Wimpole Street W1Grade II
24, Queen Anne Street W1Grade II
24, Upper Wimpole Street W1Grade II
24, WIGMORE STREET W1 (See details for further address information)Grade II
24, Wimpole Street W1Grade II
25, Harley Street W1Grade II
25, Upper Wimpole Street W1Grade II
26, Queen Anne Street W1Grade II
26, Upper Wimpole Street W1Grade II
26, WIGMORE STREET W1 (See details for further address information)Grade II
27-31, Devonshire Place W1Grade II
27-37, Wigmore Street W1Grade II
28 and 30, Weymouth StreetGrade II
28-32, Welbeck Street W1Grade II
28, 29 and 29a, Wimpole Street W1Grade II
28, Queen Anne Street W1Grade II
29, Harley StreetGrade II
29, Queen Anne Street W1Grade II
3-7, Bulstrode Street W1Grade II
3, Nottingham Street W1Grade II
30, 30a, 30b and 31, Wimpole Street W1Grade II
31, Queen Anne Street W1Grade II
31, Weymouth Street W1Grade II
32, Portland Place W1Grade II
33-35, Thayer Street W1Grade II
33-36, Wimpole Street W1Grade II
33, Queen Anne Street W1Grade II
34, Queen Anne Street W1Grade II
34, Weymouth StreetGrade II
35, Queen Anne Street W1Grade II
36, Weymouth StreetGrade II
37, Queen Anne Street W1Grade II
38, Queen Anne Street W1Grade II
39, Harley Street W1Grade II
39, Wimpole Street W1Grade II
4, Cavendish Square W1Grade II
4, Harley Street W1Grade II
4, Marylebone Mews W1Grade II
4, Nottingham Street W1Grade II
40 Devonshire StreetGrade II
40, Queen Anne Street W1Grade II
42 and 43, Wimpole Street W1Grade II
42, Wigmore Street W1Grade II
43-45, Welbeck Street W1Grade II
43-47, Devonshire Street W1Grade II
43, Weymouth Street W1Grade II
44 and 45, Wimpole Street W1Grade II
44 and 46, Wigmore Street W1Grade II
44, Harley Street W1Grade II
45-49, Weymouth StreetGrade II
45, New Cavendish Street W1Grade II
46-48, Wimpole Street W1Grade II
46, Harley Street W1Grade II
46, Queen Anne Street W1Grade II
48, Harley Street W1Grade II
48, Queen Anne Street W1Grade II
48, Welbeck Street W1Grade II
49, Harley Street W1Grade II
49, Welbeck Street W1Grade II
5 and 6, Mansfield Mews W1Grade II
5 and 6, Wimpole Street W1Grade II
5, Cavendish Square W1Grade II
5, Nottingham Street W1Grade II
50, Harley Street W1Grade II
50, Queen Anne Street W1Grade II
51, Harley Street W1Grade II
51, Wimpole Street W1Grade II
52 and 54, Queen Anne Street W1Grade II
53, Wimpole Street W1Grade II
54-57, Wimpole Street W1Grade II
54, Harley Street W1Grade II
54, Welbeck Street W1Grade II
55a, Welbeck Street W1Grade II
56, Queen Anne Street W1Grade II
57, Queen Anne Street W1Grade II
58, Queen Anne Street W1Grade II
59, Harley Street W1Grade II
6-12, DEVONSHIRE PLACE W1 (See details for further address information)Grade II
6-14, Harley Street W1Grade II
61 and 62, Wimpole Street W1Grade II
62, Harley Street W1Grade II
63, Harley StreetGrade II
64 and 66, Harley Street W1Grade II
65, Harley Street W1Grade II
67, Harley Street W1Grade II
67, Wimpole Street W1Grade II
69, Portland Place W1Grade II
69, Wimpole Street W1Grade II
7 and 9, Mansfield Mews W1Grade II
7, Upper Wimpole Street W1Grade II
7, Welbeck Street W1Grade II
7, Wimpole Street W1Grade II
70, Wimpole Street W1Grade II
71, Wimpole Street W1Grade II
73 Harley StreetGrade II
73, New Cavendish Street W1Grade II
74, Wimpole Street W1Grade II
75-6, Wimpole StreetGrade II
76 and 78, Wigmore Street W1Grade II
76A, NEW CAVENDISH STREET (See details for further address information)Grade II
77-81, Portland Place W1Grade II
78 and 80, Great Portland Street W1Grade II
78 Wimpole Street, WestminsterGrade II
79 and 81, Harley Street W1Grade II
8-13, Upper Wimpole Street W1Grade II
8, Bentinck Street W1Grade II
8, Hallam Mews W1Grade II
8, Queen Anne Street W1Grade II
8, Welbeck Street W1Grade II
85, Wimpole Street W1Grade II
86, Harley Street W1Grade II
9-13, Queen Anne Street W1Grade II
9, Bentinck Street W1Grade II
90, Harley Street W1Grade II
90a, Harley Street W1Grade II
91, Harley Street W1Grade II
93, Harley Street W1Grade II
94, Great Portland Street W1Grade II
96, Harley Street W1Grade II
97 and 99, Harley Street W1Grade II
98, Harley Street W1Grade II
Church House to Hinde Street Methodist ChurchGrade II
Crofton HouseGrade II
General Medical CouncilGrade II
Harcourt HouseGrade II
Hinde Street Methodist ChurchGrade II
K6 Telephone Kiosk, junction of Mandeville Place and Hinde Street, MaryleboneGrade II
Lister Monument in Centre of Road Opposite Numbers 71 to 81 (odd) Portland PlaceGrade II
No 2 and Attached Railings No 4 and Attached RailingsGrade II
Nos. 33 to 41, Devonshire PlaceGrade II
Number 3 and Garden Screen ColonnadeGrade II
Number 33, Including Conservatory, Area Walls and Party Walls With Tile MuralsGrade II
Number 7 and Attached RailingsGrade II
Pair of Bollards Between Numbers 79 and 80 at Entrance to Welbeck WayGrade II
Prince Regent Public HouseGrade II
Queen's CollegeGrade II
Royal College of NursingGrade II
St Marylebone Youth Centre ClubGrade II
Statue of Lord George Bentinck (at South End of Square Garden)Grade II
Statue of Quintin Hogg (in Centre of Road Opposite North End of Broadcasting House)Grade II
Statue of Sir George Stuart White in Centre of Road South of Weymouth Street CrossingGrade II
The JackalopeGrade II
The Langham HiltonGrade II
The Old Rising Sun Public HouseGrade II
Wigmore HallGrade II

Streets in the conservation area

Streets with listed buildings inside the boundary. Boundaries often split a street — check your exact address.

Harley StreetWeymouth StreetDevonshire PlaceLangham PlaceWimpole Street

The council’s appraisal

WEBHarley Street Conservation Area AppraisalCity of Westminster’s description of the area’s character — what planners look at when you apply.Open on council site ↗

Nearby conservation areas

Cleveland Street →Stratford Place →East Marylebone →Portman Estate →Charlotte Street, West →Dorset Square →

Boundary and listed buildings from City of Westminster and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.