Live Demo · No login
See Part O run across a real development
Same house type, four plot orientations, one HIGH-risk postcode. Watch how Part O outcomes change plot-by-plot - without typing a thing.
Riverside Meadow - Phase 2
Acme Homes plc
Land off Mill Lane, SW1A 1AA
Plots
4
Passing
0
Failing
4
Plot 1
3-bed semi-detached
FAIL
Risk zone
HIGH
Dom. facade
S
Glazing
19.1%
Limit: 15% · Actual 19.1% · exceeds Simplified Method - DTM required
Plot 2
3-bed semi-detached
FAIL
Risk zone
HIGH
Dom. facade
W
Glazing
19.1%
Limit: 18% · Actual 19.1% · exceeds Simplified Method - DTM required
Plot 7
3-bed semi-detached
FAIL
Risk zone
HIGH
Dom. facade
N
Glazing
19.1%
Limit: 15% · Actual 19.1% · exceeds Simplified Method - DTM required
Plot 12
3-bed semi-detached
FAIL
Risk zone
HIGH
Dom. facade
E
Glazing
19.1%
Limit: 18% · Actual 19.1% · exceeds Simplified Method - DTM required
Why this matters
Every plot above uses the same house type and the same SW1A HIGH-risk postcode. The only difference is orientation. Part O Tables 1.1/1.2 vary the glazing limit by the largest glazed facade direction - which is why one rotation can pass while another fails on identical drawings. This is exactly the visibility you get inside a real project on partouk.com.
Run your own development
Sign in, create a project, add plots, ship Building Control ready reports. No subscription - you only pay when you download a report.