Dormer loft conversion plans in Christchurch Town

Christchurch Town planning decisions and design rules

Bournemouth, Christchurch and Poole Council granted 88% of the householder planning decisions it made in its latest published year — 1 point above the 87% England-wide householder average. Christchurch Town contains Avon Buildings, Christchurch Central, Purewell conservation areas (Avon Buildings designated 1991), so materials, fenestration and roof form are assessed against the appraisal, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901) housing stock sets the design brief on most streets.

Before permission is required, Class B allows 40m³ of added loft volume on a terrace and 50m³ on a semi or detached house, and Class A allows a 3m single-storey rear extension on a terrace or 4m on a detached house. In conservation areas such as Avon Buildings, Christchurch Central and Purewell those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Christchurch Town is determined against an 8-week statutory target.

Avon Buildings (conservation area designated in 1991), Christchurch Central (designated conservation area), Purewell (conservation area designated in 1991) and Christchurch (civil parish within Christchurch Town) — these are the Christchurch Town pockets our drawings cover most. Heritage designations here include Avon Buildings, Christchurch Central and Purewell. Bournemouth, Christchurch and Poole Council weighs each proposal against the adopted Bournemouth, Christchurch and Poole local plan and Bournemouth, Christchurch and Poole Council's design guidance for householder work, where the 5,280 homes here are 16% 1983-1992, 14% 1993-1999, 12% pre-1900, which is what sets the realistic roof and rear-projection options. On roofs the borough is trussed-rafter roofs typical of 1980s building and trussed-rafter roofs typical of 1990s building, over 1980s estate houses (16% of 5,280 homes), 1990s estate houses (14%) and Victorian and earlier houses (12%).

Why a Christchurch Town scheme is judged on Christchurch Town terms

What is permitted in Christchurch Town turns on designation first, so that is where we start: Avon Buildings (conservation area designated in 1991), Christchurch Central (designated conservation area) and Purewell (conservation area designated in 1991). Inside those boundaries permitted development is curtailed and Bournemouth, Christchurch and Poole Council assesses materials, window detail and roof form against the area's own appraisal, so a scheme that would be waved through two streets away can need a full application here.

Beyond the designated areas, Christchurch Town takes in Christchurch. No Article 4 direction is recorded for Bournemouth, Christchurch and Poole Council, but Christchurch Town's 3 conservation areas still limit permitted development on those streets.

On stock, Christchurch Town is 1980s estate houses (16% of 5,280 homes), 1990s estate houses (14%) and Victorian and earlier houses (12%) — which is why trussed-rafter roofs typical of 1980s building and trussed-rafter roofs typical of 1990s building govern what a loft or rear projection can realistically be. Bournemouth, Christchurch and Poole Council decided 1,206 householder applications in the latest published year and granted 88%, with 44% issued inside the eight-week target. We draw to that record rather than to a national average.

The full build-period split for Christchurch Town runs pre-1900 12% (620 homes), 1900-1918 6% (340 homes), 1919-1929 4% (210 homes), 1930-1939 11% (570 homes), 1945-1954 2% (120 homes), 1955-1964 5% (270 homes), 1965-1972 5% (280 homes), 1973-1982 8% (420 homes), 1983-1992 16% (870 homes), 1993-1999 14% (760 homes) and 2000-2008 7% (370 homes). That distribution is why pre-1900 detailing dominates the drawings here, and it is measured from council-tax records rather than assumed from the street name.

Bournemouth, Christchurch and Poole Council also decides for Bearwood & Merley, Boscombe West, Bournemouth Central, Broadstone, Burton & Grange, Canford Cliffs, Commons and Highcliffe & Walkford, so a decision in Christchurch Town sits inside a wider pattern of decisions we track across the same authority — useful when an officer cites a precedent from the next area over.

The rear dormer, drawn for Christchurch Town roofs

The box dormer is the workhorse loft, and most of Christchurch Town is built for it — the borough runs to 1980s estate houses (16% of 5,280 homes), 1990s estate houses (14%) and Victorian and earlier houses (12%) under trussed-rafter roofs typical of 1980s building and trussed-rafter roofs typical of 1990s building, and a flat-roofed box across the rear slope is the cheapest cubic metre of full-height space those roofs give up. Bournemouth, Christchurch and Poole Council tests the dormer against the adopted Bournemouth, Christchurch and Poole local plan and Bournemouth, Christchurch and Poole Council's design guidance for householder work, and because permitted development turns on a number, the volume you propose against the volume you have left is the first thing an officer or a certificate checks.

That is why the arithmetic goes on the drawings. We calculate the box against the 40- or 50-cubic-metre allowance, count any earlier roof enlargement into the total, hold the flat roof below the ridge and set the face back off the eaves so the dormer reads as subordinate. Christchurch Town contains Avon Buildings, Christchurch Central, Purewell conservation areas (Avon Buildings designated 1991), so materials, fenestration and roof form are assessed against the appraisal, so the cheeks, the window line and the material are drawn to answer it rather than invite a query.

Where Christchurch Town's streets are protected — Avon Buildings, Christchurch Central and Purewell among them — the Class B dormer right is switched off and even a modest rear box needs consent. No Article 4 direction is recorded for Bournemouth, Christchurch and Poole Council, but Christchurch Town's 3 conservation areas still limit permitted development on those streets. We confirm the designation before the box is sized.