Three Rivers District Council

Adopted Documents We Assess Against

Development plan: Three Rivers Development Management Policies LDD (adopted 1 July 2013)

Documents are re-checked against the council's own website weekly. A detected change flags "Policy Update Available" for human review — live assessment standards are never replaced automatically.

Three Rivers District Council standards at a glance

7 numeric standards taken from Three Rivers District Council's own adopted documents, each shown with the paragraph it comes from. Figures differ between councils — these are this one's.

Rear extension depth

up to 3.6m

For a terraced or semi-detached house in Three Rivers, a single-storey rear extension is normally expected to stay within about 3.6 metres of the original rear wall. DM Policies LDD Appendix 2: Design Criteria

up to 4m

For a detached house in Three Rivers, a single-storey rear extension is normally expected to stay within about 4 metres of the original rear wall. DM Policies LDD Appendix 2: Design Criteria

Side extension form

at least 1.2m

A two-storey side extension in Three Rivers should normally keep at least 1.2 metres from the side (flank) boundary at first-floor level - in higher-density areas the Council may accept as little as 1 metre. DM Policies LDD Appendix 2: Design Criteria

Amenity space

at least 42m²

A 1-bed home in Three Rivers should retain at least 42 square metres of private amenity space after the works. DM Policies LDD Appendix 2: Design Criteria

at least 63m²

A 2-bed home in Three Rivers should retain at least 63 square metres of private amenity space after the works. DM Policies LDD Appendix 2: Design Criteria

at least 84m²

A 3-bed home in Three Rivers should retain at least 84 square metres of private amenity space after the works. DM Policies LDD Appendix 2: Design Criteria

at least 105m²

A 4-bed (or bigger) home in Three Rivers should retain at least 105 square metres of private amenity space after the works. DM Policies LDD Appendix 2: Design Criteria

Standards are what the council normally expects, not a guarantee. A scheme outside them can still be approved on its merits, and one inside them can still be refused for another reason.

Authored Policy Library

8 local policy checks, each citation-locked to the adopted document. National policy (NPPF, national space and daylight standards) applies alongside these.

Development Management Policies Local Development Document

• DM Policies LDD Appendix 2: Design Criteria — Rear extension depth (2 checks) For a terraced or semi-detached house in Three Rivers, a single-storey rear extension is normally expected to stay within about 3.6 metres of the original rear wall. For a detached house in Three Rivers, a single-storey rear extension is normally expected to stay within about 4 metres of the original rear wall.
• DM Policies LDD Appendix 2: Design Criteria — Side extension form A two-storey side extension in Three Rivers should normally keep at least 1.2 metres from the side (flank) boundary at first-floor level - in higher-density areas the Council may accept as little as 1 metre.
• DM Policies LDD Appendix 2: Design Criteria — Two storey rear A two-storey rear extension in Three Rivers must not cross a 45-degree line drawn from your neighbour's boundary, taken level with the back of their house - this protects their garden and light.
• DM Policies LDD Appendix 2: Design Criteria — Amenity space (4 checks) A 1-bed home in Three Rivers should retain at least 42 square metres of private amenity space after the works. A 2-bed home in Three Rivers should retain at least 63 square metres of private amenity space after the works. A 3-bed home in Three Rivers should retain at least 84 square metres of private amenity space after the works. A 4-bed (or bigger) home in Three Rivers should retain at least 105 square metres of private amenity space after the works.