Dormer, hip-to-gable and mansard loft conversion drawings for Hart homes — prepared to Hart District Council's design guidance, delivered in days and revised free until your decision lands, with a free approval-odds score first.
Hart District Council granted 86% of the householder planning decisions it made in its latest published year — 1 point below the 87% England-wide householder average. Hart contains Basingstoke Canal 1, Basingstoke Canal2, Basingstoke Canal3 conservation areas (Basingstoke Canal 1 designated 2009), so materials, fenestration and roof form are assessed against the appraisal, which is where a policy-literate drawing pack earns its keep. Its dominant postwar (1945–1970) 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. Hart carries at least one Article 4 direction, and conservation areas including Basingstoke Canal 1, Basingstoke Canal2 and Basingstoke Canal3 remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Hart is determined against an 8-week statutory target.
Basingstoke Canal 1 (conservation area designated in 2009), Basingstoke Canal2 (conservation area designated in 2009), Basingstoke Canal3 (conservation area designated in 2009), Basingstoke Canal4 (conservation area designated in 2009), Basingstoke Canal5 (conservation area designated in 2009), Bramshill (conservation area designated in 2012), Cricket Hill (conservation area designated in 2011), Crondall (conservation area designated in 2024), Blackwater and Hawley (ward of Hart), Fleet Central (ward of Hart), Fleet East (ward of Hart), Fleet West (ward of Hart), Hartley Wintney (ward of Hart), Odiham (ward of Hart) and Yateley East (ward of Hart) — these are the Hart pockets our drawings cover most. Heritage designations here include Basingstoke Canal 1, Basingstoke Canal2, Basingstoke Canal3, Basingstoke Canal4, Basingstoke Canal5, Bramshill, Cricket Hill and Crondall. Hart District Council weighs each proposal against Hart District Council's development plan and the design policies it applies to householder applications, where the 26,660 homes here are 15% 1965-1972, 11% 1955-1964, 10% 1983-1992, which is what sets the realistic roof and rear-projection options. On roofs the borough is shallow-pitched roofs and integral garages typical of that period's building and shallow gabled roofs typical of that period's building, over late-1960s and early-1970s houses (15% of 26,660 homes), late-1950s and early-1960s houses (11%) and 1980s estate houses (10%).
What is permitted in Hart turns on designation first, so that is where we start: Basingstoke Canal 1 (conservation area designated in 2009), Basingstoke Canal2 (conservation area designated in 2009), Basingstoke Canal3 (conservation area designated in 2009), Basingstoke Canal4 (conservation area designated in 2009), Basingstoke Canal5 (conservation area designated in 2009), Bramshill (conservation area designated in 2012), Cricket Hill (conservation area designated in 2011) and Crondall (conservation area designated in 2024). Inside those boundaries permitted development is curtailed and Hart District 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, Hart takes in Blackwater and Hawley, Fleet Central, Fleet East, Fleet West, Hartley Wintney, Odiham and Yateley East. Hart District Council has 47 recorded Article 4 directions — check the address before assuming PD applies in the district.
On stock, Hart is late-1960s and early-1970s houses (15% of 26,660 homes), late-1950s and early-1960s houses (11%) and 1980s estate houses (10%) — which is why shallow-pitched roofs and integral garages typical of that period's building and shallow gabled roofs typical of that period's building govern what a loft or rear projection can realistically be. Hart District Council decided 445 householder applications in the latest published year and granted 86%, with 71% issued inside the eight-week target. We draw to that record rather than to a national average.
The full build-period split for Hart runs pre-1900 3% (190 homes), 1900-1918 0% (30 homes), 1919-1929 0% (10 homes), 1930-1939 6% (350 homes), 1945-1954 3% (170 homes), 1955-1964 30% (1,850 homes), 1965-1972 33% (1,990 homes), 1973-1982 4% (260 homes), 1983-1992 5% (310 homes), 1993-1999 4% (220 homes) and 2000-2008 3% (170 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.
Hart District Council also decides for Blackwater and Hawley, Fleet Central, Fleet East, Fleet West, Hartley Wintney, Odiham and Yateley East, so a decision in Hart 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 Article 4 directions recorded for this council include Bramshill, Broad Oak Odiham Hampshire., Church Farm (Eversley) and Cricket Hill Yateley (Extension). Each removes a specific permitted-development right inside its own boundary, which is why the check is done on the address rather than on the town.
Published figures for Hart and Hart District Council. These are the numbers that decide what is realistic on your street, so we work from them rather than from national averages.
| Measure | Hart |
|---|---|
| Dwellings recorded | 26,660 |
| Built pre-1900 | 190 (3%) |
| Built 1900-1918 | 30 (0%) |
| Built 1919-1929 | 10 (0%) |
| Built 1930-1939 | 350 (6%) |
| Built 1945-1954 | 170 (3%) |
| Built 1955-1964 | 1,850 (30%) |
| Built 1965-1972 | 1,990 (33%) |
| Built 1973-1982 | 260 (4%) |
| Built 1983-1992 | 310 (5%) |
| Built 1993-1999 | 220 (4%) |
| Built 2000-2008 | 170 (3%) |
| Built before 1919 | 11% |
| Built 1919–1939 | 5% |
| Built 1945–2008 | 69% |
| Conservation areas in Hart | 8 (Basingstoke Canal 1, Basingstoke Canal2…) |
| Conservation areas district-wide | 39 |
| Article 4 directions recorded | 47 |
| Householder applications decided | 445 |
| Householder applications granted | 86% |
| Decided within 8 weeks | 71% |
Dwelling stock from VOA council-tax data at 31 March 2025; conservation-area and Article 4 counts from planning.data.gov.uk (MHCLG); decision figures are Hart District Council's own, from MHCLG live table PS2 for the year to 31 March 2026.
Hart's roofs set the brief. The borough is built largely from late-1960s and early-1970s houses (15% of 26,660 homes), late-1950s and early-1960s houses (11%) and 1980s estate houses (10%), and its lofts sit under shallow-pitched roofs and integral garages typical of that period's building and shallow gabled roofs typical of that period's building — the geometry that decides whether a rear dormer, a hip-to-gable or a mansard gives you the headroom you want. Hart District Council assesses loft proposals against Hart District Council's development plan and the design policies it applies to householder applications, and its case officers read each roof against the pair next door and the wider street before they read the plans.
That makes drawing quality decisive. We measure ridge and eaves heights, roof pitch and the existing stair, calculate the added volume against the permitted-development limits exactly, and show the workings on the drawings so Hart District Council can verify them. Hart contains Basingstoke Canal 1, Basingstoke Canal2, Basingstoke Canal3 conservation areas (Basingstoke Canal 1 designated 2009), so materials, fenestration and roof form are assessed against the appraisal, so we resolve it on the page rather than leave it for the case officer to raise.
Hart also carries protected streets — Basingstoke Canal 1, Basingstoke Canal2, Basingstoke Canal3, Basingstoke Canal4, Basingstoke Canal5, Bramshill, Cricket Hill and Crondall among them. Hart District Council has 47 recorded Article 4 directions — check the address before assuming PD applies in the district. We check your address against those designations before a line is drawn.
Many Hart loft conversions proceed without planning permission — a rear dormer within the permitted-development volume limits (40 cubic metres on a terrace, 50 on a semi or detached house) is usually lawful. You will normally need a full application to Hart District Council if any of these apply:
We draw the roof line, the ridge height and the neighbour's daylight on the page — the relationships Hart District Council's officers check first — and submit a validation-complete pack, whether that is a lawful development certificate or a full householder application.
Below is Hart District Council's real householder decision record, pulled from official planning statistics and updated as new data lands. Hart District Council granted 86% of 445 householder decisions in the year to 31 March 2026, 71% of them inside eight weeks. Professionally prepared loft drawings anticipate those pressure points before submission, which is why complete, policy-literate packs are decided faster and refused less often than DIY applications.
Source: MHCLG planning application statistics (householder decisions, England, 1 April 2025 - 31 March 2026). Compare every borough on our London approval-rate league table.
Tell us about your project and get a fixed, no-obligation quote back within one working day. If you don't need planning permission at all, we'll tell you that too — for free.
Across Basingstoke Canal 1, Basingstoke Canal2 and Basingstoke Canal3, the recurring loft is the rear dormer — a box across the back roof slope that turns a cramped attic into a full-height double bedroom and en-suite. On shallow-pitched roofs and integral garages typical of that period's building, that is usually the most efficient use of the roof; where the stock is shallow gabled roofs typical of that period's building, a hip-to-gable followed by a rear dormer unlocks far more space, though it needs a full application.
The 26,660 homes here are 15% 1965-1972, 11% 1955-1964, 10% 1983-1992, which is what sets the realistic roof and rear-projection options. We draw the dormer inside the volume allowance, keep the flat-roof build-up below the ridge, and set the face back from the eaves as the rules require — so the pack answers Hart District Council's questions before they are asked. Where permitted-development rights are exhausted or removed, we prepare a householder application composed to the borough's roof-alteration guidance instead.
We draw loft conversions on every street in the borough. A few of the neighbourhoods where Hart roofs come up most often:
Loft conversion drawings for Basingstoke Canal 1's conservation area designated in 2009 — measured, volume-checked and drawn to Hart District Council's guidance.
Loft conversion drawings for Basingstoke Canal2's conservation area designated in 2009 — measured, volume-checked and drawn to Hart District Council's guidance.
Loft conversion drawings for Basingstoke Canal3's conservation area designated in 2009 — measured, volume-checked and drawn to Hart District Council's guidance.
Loft conversion drawings for Basingstoke Canal4's conservation area designated in 2009 — measured, volume-checked and drawn to Hart District Council's guidance.
Loft conversion drawings for Basingstoke Canal5's conservation area designated in 2009 — measured, volume-checked and drawn to Hart District Council's guidance.
Loft conversion drawings for Bramshill's conservation area designated in 2012 — measured, volume-checked and drawn to Hart District Council's guidance.
The right loft in Hart depends on your roof. This is how the main types compare on planning route and the space they add.
| Loft type | Permitted development? | Space & headroom | What Hart District Council checks |
|---|---|---|---|
| Rear dormer | Usually yes, within volume limits | Full-height double room at the back | Volume, set-back from eaves, ridge height |
| Hip-to-gable | No — full application | Extends the whole side of the roof | Roof bulk and the symmetry of the pair |
| Mansard | No — full application | Maximum floor area across the roof | Street character, especially in conservation areas |
| Rooflights only | Usually yes (Class C) | Light and headroom, no extra footprint | Whether rooflights sit within the existing slope |
Route depends on your street — conservation areas such as Basingstoke Canal 1 and Basingstoke Canal2 and Article 4 directions can remove permitted-development rights.
A fixed process built around how Hart District Council validates and decides householder loft applications — most drawings are submission-ready within seven days of survey.
Tell us your Hart postcode and roof type. We confirm your conservation and Article 4 status, how much permitted-development volume you have left, and score your odds against live Hart District Council decisions.
We measure ridge and eaves heights, roof pitch, joist levels and the existing stair — the numbers the volume calculation and head heights depend on.
Chartered designers develop the dormer, hip-to-gable or mansard to your brief, drawn inside the Class B limits or to Hart District Council's roof-alteration guidance.
We submit the certificate or application, manage validation and case-officer queries, and revise the drawings free until Hart District Council issues its decision.
Often not. A rear dormer within 40 cubic metres on a terrace, or 50 on a semi-detached or detached house, set back from the eaves and no higher than the ridge, is usually permitted development. In Hart the main exceptions are hip-to-gable conversions, dormers visible from the highway, and homes in conservation areas such as Basingstoke Canal 1 and Basingstoke Canal2 or on streets with an Article 4 direction. Hart District Council is the decision-maker.
Generally no. In conservation areas including Basingstoke Canal 1 and Basingstoke Canal2, Class B permitted-development rights for lofts are removed, so a rear dormer that would be lawful elsewhere needs a full application to Hart District Council. Hart District Council has 47 recorded Article 4 directions — check the address before assuming PD applies in the district. We check your exact address before drawing.
On shallow-pitched roofs and integral garages typical of that period's building, common across Hart, a rear dormer is usually the most efficient conversion and often permitted development. Where the roof is shallow gabled roofs typical of that period's building, a hip-to-gable followed by a rear dormer gains far more usable space but needs planning permission. Our survey confirms which your roof supports before we draw. Hart District Council is the decision-maker.
A householder planning application in Hart runs to a statutory eight-week target, and a lawful development certificate to eight weeks as well, though validation can add time if the pack is incomplete. We submit validation-complete drawings and manage case-officer queries to keep the decision on track. Hart District Council is the decision-maker.
If your dormer is permitted development, a lawful development certificate from Hart District Council is council-stamped proof of that — worth having, because every buyer's solicitor will ask for it when you sell. We prepare and submit the certificate application with the same drawing pack.
Every roof is different, so we quote each Hart project individually — a fixed, no-obligation price back within one working day. The quote covers the full drawing pack with free revisions until Hart District Council approves, and we tell you upfront whether your loft qualifies as permitted development. Call 020 7864 7245 to start.
Answer five quick questions and get a free planning score for your exact address — instantly. Then, if you want the full picture, unlock the detailed analysis: your council's live approval rates, local precedents, constraints on your street and a step-by-step route to permission.
Same fixed quotes, same fast drawings — wherever your project is.