Metropolitan Housing Condition Report • 2026
London Damp & Mould Risk
Analysis across 184 postcode districts and 2,113,848 surveyed homes. Evaluates Victorian solid-wall housing density (51.1% solid masonry), EPC energy inefficiency, and winter condensation risks across London.
Avg Risk Score49 / 100City-Wide Benchmark
Solid Wall Density51.1%55.5% Pre-1930 builds
Poor EPC (E-G)19%High condensation risk
Highest Risk DistrictW1B (66)Flat
London Postcode Districts (184)
Browse local damp vulnerability metrics, solid-wall housing distribution, and surveyor quotes.
E1
42.8% Solid • ShelteredModerate44/100
E10
52.6% Solid • ShelteredModerate49/100
E11
50.3% Solid • ShelteredModerate47/100
E12
50.7% Solid • ShelteredModerate47/100
E13
48.3% Solid • ShelteredModerate46/100
E14
20.3% Solid • ShelteredLow33/100
E15
43.7% Solid • ShelteredModerate44/100
E16
48.3% Solid • ShelteredModerate47/100
E17
55% Solid • ShelteredModerate49/100
E18
30.1% Solid • ShelteredLow29/100
E1W
36.5% Solid • ShelteredModerate42/100
E2
42.8% Solid • ShelteredModerate46/100
E20
6.7% Solid • ShelteredLow26/100
E22
42.8% Solid • ShelteredModerate46/100
E3
40.5% Solid • ShelteredModerate44/100
E4
55% Solid • ShelteredModerate48/100
E5
59.1% Solid • ModerateModerate54/100
E6
51.2% Solid • ShelteredModerate47/100
E7
44.3% Solid • ShelteredModerate45/100
E8
58% Solid • ModerateModerate53/100
E9
53.9% Solid • ModerateModerate52/100
E98
40.5% Solid • ShelteredModerate45/100
EC1A
33.6% Solid • ShelteredModerate41/100
EC1M
60.4% Solid • ModerateHigh56/100
EC1N
57.5% Solid • ModerateHigh55/100
EC1P
59.9% Solid • ModerateHigh55/100
EC1R
63.9% Solid • ModerateHigh59/100
EC1V
61.6% Solid • ModerateHigh57/100
EC1Y
57% Solid • ModerateHigh55/100
EC2A
55.6% Solid • ModerateModerate51/100
EC2M
33.6% Solid • ShelteredModerate41/100
EC2N
31.9% Solid • ShelteredModerate42/100
EC2P
61% Solid • ModerateHigh56/100
EC2R
34.8% Solid • ShelteredModerate44/100
EC2V
29.6% Solid • ShelteredModerate40/100
EC2Y
36% Solid • ShelteredModerate43/100
EC3A
30.1% Solid • ShelteredModerate40/100
EC3M
37.1% Solid • ShelteredModerate43/100
EC3N
35.4% Solid • ShelteredModerate43/100
EC3P
63.9% Solid • ModerateHigh58/100
EC3R
36.5% Solid • ShelteredModerate43/100
EC3V
37.1% Solid • ShelteredModerate44/100
EC4A
32.5% Solid • ShelteredModerate41/100
EC4M
33.1% Solid • ShelteredModerate43/100
EC4N
33.1% Solid • ShelteredModerate42/100
EC4P
61.6% Solid • ModerateHigh57/100
EC4R
30.7% Solid • ShelteredModerate41/100
EC4V
36.5% Solid • ShelteredModerate44/100
EC4Y
32.5% Solid • ShelteredModerate43/100
N1
62.8% Solid • ModerateHigh58/100
N10
56.2% Solid • ModerateModerate50/100
N11
35% Solid • ShelteredLow34/100
N12
36.8% Solid • ShelteredModerate35/100
N13
29.6% Solid • ShelteredLow31/100
N14
27.8% Solid • ShelteredLow29/100
N15
60.9% Solid • ModerateModerate54/100
N16
62% Solid • ModerateHigh56/100
N17
61.4% Solid • ModerateModerate53/100
N18
33.1% Solid • ShelteredLow34/100
N19
63.9% Solid • ModerateHigh58/100
N1C
57.5% Solid • ModerateModerate54/100
N1P
59.3% Solid • ModerateHigh57/100
N2
35.6% Solid • ShelteredModerate35/100
N20
32.7% Solid • ShelteredLow34/100
N21
35.4% Solid • ShelteredLow34/100
N22
56.2% Solid • ModerateModerate51/100
N3
33.9% Solid • ShelteredLow34/100
N4
59.7% Solid • ModerateModerate53/100
N5
64.5% Solid • ModerateHigh59/100
N6
61.4% Solid • ModerateModerate54/100
N7
61% Solid • ModerateHigh57/100
N8
55% Solid • ModerateModerate51/100
N81
62.6% Solid • ModerateHigh55/100
N9
30.7% Solid • ShelteredLow33/100
NW1
55.8% Solid • ModerateModerate54/100
NW10
42.7% Solid • ShelteredModerate42/100
NW11
36.2% Solid • ShelteredLow34/100
NW1W
57% Solid • ModerateModerate53/100
NW2
42.1% Solid • ShelteredModerate42/100
NW26
43.3% Solid • ShelteredModerate43/100
NW3
65.9% Solid • ModerateHigh59/100
NW4
33.9% Solid • ShelteredLow34/100
NW5
59.3% Solid • ModerateHigh55/100
NW6
61.6% Solid • ModerateHigh58/100
NW7
35% Solid • ShelteredLow34/100
NW8
58.3% Solid • ModerateHigh57/100
NW9
38.5% Solid • ShelteredModerate37/100
SE1
53.9% Solid • ModerateModerate51/100
SE10
34.7% Solid • ShelteredModerate37/100
SE11
58.1% Solid • ModerateModerate52/100
SE12
49.9% Solid • ShelteredModerate48/100
SE13
55.7% Solid • ModerateModerate51/100
SE14
50.5% Solid • ShelteredModerate48/100
SE15
50.4% Solid • ShelteredModerate49/100
SE16
52.7% Solid • ModerateModerate50/100
SE17
48.1% Solid • ShelteredModerate48/100
SE18
39.4% Solid • ShelteredModerate40/100
SE19
37% Solid • ShelteredLow34/100
SE1P
51.6% Solid • ShelteredModerate49/100
SE2
42.3% Solid • ShelteredModerate42/100
SE20
31.6% Solid • ShelteredLow29/100
SE21
53.3% Solid • ModerateModerate50/100
SE22
51% Solid • ShelteredModerate49/100
SE23
55.1% Solid • ShelteredModerate49/100
SE24
58.1% Solid • ModerateModerate52/100
SE25
38.8% Solid • ShelteredModerate35/100
SE26
51.1% Solid • ShelteredModerate47/100
SE27
50.6% Solid • ShelteredModerate49/100
SE28
44.6% Solid • ShelteredModerate42/100
SE3
38.2% Solid • ShelteredModerate40/100
SE4
52.2% Solid • ShelteredModerate48/100
SE5
46.9% Solid • ShelteredModerate47/100
SE6
54.6% Solid • ModerateModerate50/100
SE7
38.8% Solid • ShelteredModerate38/100
SE8
51.1% Solid • ShelteredModerate49/100
SE9
45.2% Solid • ShelteredModerate44/100
SW10
68.9% Solid • ModerateHigh62/100
SW11
52.2% Solid • ShelteredModerate49/100
SW12
56.3% Solid • ModerateModerate50/100
SW13
54.6% Solid • ShelteredModerate47/100
SW14
54.1% Solid • ShelteredModerate47/100
SW15
52.2% Solid • ShelteredModerate48/100
SW16
52.3% Solid • ShelteredModerate49/100
SW17
52.8% Solid • ShelteredModerate48/100
SW18
56.9% Solid • ModerateModerate51/100
SW19
48.5% Solid • ShelteredModerate43/100
SW1A
64.1% Solid • ModerateHigh60/100
SW1E
64.1% Solid • ModerateHigh58/100
SW1H
62.9% Solid • ModerateHigh59/100
SW1P
59.4% Solid • ModerateHigh57/100
SW1V
57.7% Solid • ModerateHigh57/100
SW1W
63.5% Solid • ModerateHigh58/100
SW1X
72.9% Solid • ModerateHigh65/100
SW1Y
59.4% Solid • ModerateHigh57/100
SW2
55.2% Solid • ModerateModerate50/100
SW20
42.7% Solid • ShelteredModerate39/100
SW3
65.2% Solid • ModerateHigh60/100
SW4
50.6% Solid • ShelteredModerate48/100
SW5
66% Solid • ModerateHigh61/100
SW6
61.9% Solid • ModerateHigh57/100
SW7
68.7% Solid • ModerateHigh63/100
SW8
35.5% Solid • ShelteredModerate42/100
SW9
52.9% Solid • ModerateModerate50/100
SW95
53.4% Solid • ModerateModerate50/100
W10
66% Solid • ModerateHigh58/100
W11
65.4% Solid • ModerateHigh59/100
W12
64.8% Solid • ModerateHigh57/100
W13
42.4% Solid • ShelteredModerate39/100
W14
64.8% Solid • ModerateHigh58/100
W1A
62.8% Solid • ModerateHigh58/100
W1B
72.1% Solid • ModerateHigh66/100
W1C
65.8% Solid • ModerateHigh61/100
W1D
71.3% Solid • ModerateHigh65/100
W1F
64.7% Solid • ModerateHigh61/100
W1G
65.3% Solid • ModerateHigh58/100
W1H
62.9% Solid • ModerateHigh59/100
W1J
60% Solid • ModerateHigh58/100
W1K
71.4% Solid • ModerateHigh62/100
W1S
65.3% Solid • ModerateHigh59/100
W1T
62.8% Solid • ModerateHigh57/100
W1U
61.2% Solid • ModerateHigh59/100
W1W
58.3% Solid • ModerateHigh57/100
W2
57.7% Solid • ModerateHigh57/100
W3
42.9% Solid • ShelteredModerate40/100
W4
36.5% Solid • ShelteredModerate35/100
W5
41.2% Solid • ShelteredModerate40/100
W6
58.4% Solid • ModerateHigh55/100
W7
38.3% Solid • ShelteredModerate38/100
W8
68.9% Solid • ModerateHigh62/100
W9
64.7% Solid • ModerateHigh60/100
WC1A
58.7% Solid • ModerateModerate54/100
WC1B
62.2% Solid • ModerateHigh56/100
WC1E
58.7% Solid • ModerateHigh55/100
WC1H
62.8% Solid • ModerateHigh55/100
WC1N
61.6% Solid • ModerateHigh57/100
WC1R
59.3% Solid • ModerateModerate54/100
WC1V
55.2% Solid • ModerateModerate54/100
WC1X
59.3% Solid • ModerateHigh56/100
WC2A
56.4% Solid • ModerateModerate54/100
WC2B
55.8% Solid • ModerateModerate53/100
WC2E
60% Solid • ModerateHigh57/100
WC2H
63.3% Solid • ModerateHigh57/100
WC2N
63.5% Solid • ModerateHigh58/100
WC2R
65.8% Solid • ModerateHigh61/100
London Housing Architecture & Damp Dynamics
London possesses an extensive heritage of late 19th and early 20th-century housing, largely developed during the industrial expansion of the Midlands and North West. Properties built before 1930 were traditionally constructed with solid brick masonry (9-inch or 13.5-inch headers) without a damp-proof cavity.
In districts such as W1B, over 80.8% of homes retain these solid exterior walls. When combined with modern airtight uPVC double glazing without continuous trickle ventilation, moisture generated by occupants remains trapped indoors, rapidly condensing on chilled solid masonry and fueling black mould blooms (*Stachybotrys chartarum*).
High Risk Hotspots (London)
Postcodes like W1B require active mechanical ventilation (MEV or PIV systems) and regular exterior masonry repointing to prevent penetrating rainwater ingress.
Lower Vulnerability Zones (London)
Districts like E20 (Score: 26/100) feature modern post-1980 cavity wall construction with integrated thermal insulation and effective vapor barriers.
Independent Surveyor Network • W1B
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Get an Independent Damp & Timber Survey Quote
Need a definitive diagnosis for buying a property, mortgage lender retention, or persistent black mould? Get transparent fixed-fee quotes from vetted, insured damp surveyors in London (W1B).
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