Part O compliance at development scale.
One base house type, dozens of plots, varying orientations - run the Simplified Method once, replicate across the site, and stop redoing work for every plot.
- Reuse the same house type across multiple plots
- Per-plot orientation and risk-zone evaluation
- Pre-cleared standard house types stay pre-cleared
- Bulk-ready, branded reports for Building Control submission
Part O at volume - where developers lose time and margin
Volume housebuilders cannot run a 30-minute manual check on every plot. Our workflow is built for repeat house types and varying plot conditions.
House type approved, plots fail
A type passes facing south, fails facing west. We auto-recalculate Part O for every plot orientation from one base assessment.
Standardisation breaks
High-risk postcodes need shading; Moderate-risk plots do not. The risk-zone engine flags exactly which plots need design changes.
Late Building Control queries
A formal report per plot, generated at submission, with risk zone map, room schedule and per-window free area workings - no chase-up.
Why developers choose partouk.com
Built around how volume housebuilders actually deliver, not around one-off bespoke houses.
Save & duplicate house types
Save your standard type as a template, then duplicate per plot with the correct address, postcode and orientation in seconds.
Risk-zone awareness
AD-O Appendix C risk zones detected from postcode - the calculator knows that SW1 needs shading and OX1 does not.
Per-window free area engine
Each window's opening angle, restrictor and Part Q security adjustment fed into a true Appendix D Equivalent Area calculation.
Branded, batch-friendly output
Apply your house brand once, generate consistent reports across the entire development - same format, plot-by-plot.
Part O postcode risk checker
Find out instantly whether your site falls in a Part O High-risk overheating area. Based on Approved Document O, Appendix C (London Table C1 and Manchester Note C3). No sign-up required.
Risk zones are defined in Approved Document O, Appendix C (2021 edition).
Developer FAQs
Ready to handle Part O at development scale?
No subscription. Pay per plot. Volume pricing available - get in touch from the contact page once you are ready to scale up.