Essex: garden room built within PD outbuilding rules

The brief
Create a detached garden room for home working, no planning delays.
PD question answered
Can a garden room be built under permitted development?
Yes, if height, footprint, and location limits are met and it remains ancillary to the house.
Constraints
- Maintain height limits near boundaries
- Avoid excessive site coverage
- Keep use ancillary (no separate dwelling)
What we did
- Set a low roof profile to meet boundary limits
- Kept footprint proportionate to the plot
- Ensured internal use remained ancillary
Outcome
A fast build and a compliant outbuilding ready for work use.