Dormer, hip-to-gable and mansard loft conversion drawings for Coningsby & Mareham homes — prepared to East Lindsey District Council's design guidance, delivered in days and revised free until your decision lands, with a free approval-odds score first.
East Lindsey District Council granted 94% of the householder planning decisions it made in its latest published year — 7 points above the 87% England-wide householder average. Coningsby & Mareham contains Revesby, Tattershall conservation areas, 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) and postwar (1945–1970) housing stock sets the design brief on most streets.
Under Class B, a rear dormer stays permitted development up to 40m³ of added roof volume on a terrace or 50m³ on a semi-detached or detached house, while Class A allows a single-storey rear extension of 3m beyond the original rear wall on a terrace and 4m on a detached house before a full application is needed. In conservation areas such as Revesby and Tattershall those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Coningsby & Mareham is determined against an 8-week statutory target.
Revesby (designated conservation area), Tattershall (designated conservation area), Coningsby (civil parish within Coningsby & Mareham), Tumby (civil parish within Coningsby & Mareham), Revesby (civil parish within Coningsby & Mareham), Tattershall (civil parish within Coningsby & Mareham), Tattershall Thorpe (civil parish within Coningsby & Mareham) and Wildmore (civil parish within Coningsby & Mareham) — these are the Coningsby & Mareham pockets our drawings cover most. Heritage designations here include Revesby and Tattershall. East Lindsey District Council weighs each proposal against the adopted East Lindsey local plan and East Lindsey District Council's design guidance for householder work, where the 4,510 homes here are 15% pre-1900, 13% 2000-2008, 11% 1945-1954, which is what sets the realistic roof and rear-projection options. On roofs the borough is steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building and trussed-rafter roofs typical of 2000s building, over Victorian and earlier houses (15% of 4,510 homes), 2000s houses and apartments (13%) and early postwar houses (11%).
Coningsby & Mareham's designated heritage is specific, and it is the first thing we check against your address: Revesby (designated conservation area) and Tattershall (designated conservation area). Inside those boundaries permitted development is curtailed and East Lindsey 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, Coningsby & Mareham takes in Coningsby, Tumby, Revesby, Tattershall, Tattershall Thorpe and Wildmore. No Article 4 direction is recorded for East Lindsey District Council, but Coningsby & Mareham's 2 conservation areas still limit permitted development on those streets.
On stock, Coningsby & Mareham is Victorian and earlier houses (15% of 4,510 homes), 2000s houses and apartments (13%) and early postwar houses (11%) — which is why steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building and trussed-rafter roofs typical of 2000s building govern what a loft or rear projection can realistically be. East Lindsey District Council decided 282 householder applications in the latest published year and granted 94%, with 60% issued inside the eight-week target. Those are the numbers our drawings are prepared against.
The full build-period split for Coningsby & Mareham runs pre-1900 15% (660 homes), 1900-1918 1% (60 homes), 1919-1929 0% (20 homes), 1930-1939 2% (110 homes), 1945-1954 11% (500 homes), 1955-1964 9% (390 homes), 1965-1972 11% (500 homes), 1973-1982 7% (320 homes), 1983-1992 9% (400 homes), 1993-1999 5% (210 homes) and 2000-2008 13% (590 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.
East Lindsey District Council also decides for Alford, Binbrook, Hagworthingham, Horncastle, Wainfleet, Woodhall Spa and Wragby, so a decision in Coningsby & Mareham 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.
Published figures for Coningsby & Mareham and East Lindsey 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 | Coningsby & Mareham |
|---|---|
| Dwellings recorded | 4,510 |
| Built pre-1900 | 660 (15%) |
| Built 1900-1918 | 60 (1%) |
| Built 1919-1929 | 20 (0%) |
| Built 1930-1939 | 110 (2%) |
| Built 1945-1954 | 500 (11%) |
| Built 1955-1964 | 390 (9%) |
| Built 1965-1972 | 500 (11%) |
| Built 1973-1982 | 320 (7%) |
| Built 1983-1992 | 400 (9%) |
| Built 1993-1999 | 210 (5%) |
| Built 2000-2008 | 590 (13%) |
| Built before 1919 | 16% |
| Built 1919–1939 | 3% |
| Built 1945–2008 | 65% |
| Conservation areas in Coningsby & Mareham | 2 (Revesby, Tattershall) |
| Conservation areas district-wide | 17 |
| Article 4 directions recorded | 0 |
| Householder applications decided | 282 |
| Householder applications granted | 94% |
| Decided within 8 weeks | 60% |
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 East Lindsey District Council's own, from MHCLG live table PS2 for the year to 31 March 2026.
Coningsby & Mareham's roofs set the brief. The borough is built largely from Victorian and earlier houses (15% of 4,510 homes), 2000s houses and apartments (13%) and early postwar houses (11%), and its lofts sit under steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building and trussed-rafter roofs typical of 2000s building — the geometry that decides whether a rear dormer, a hip-to-gable or a mansard gives you the headroom you want. East Lindsey District Council assesses loft proposals against the adopted East Lindsey local plan and East Lindsey District Council's design guidance for householder work, 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 East Lindsey District Council can verify them. Coningsby & Mareham contains Revesby, Tattershall conservation areas, 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.
Coningsby & Mareham also carries protected streets — Revesby and Tattershall among them. No Article 4 direction is recorded for East Lindsey District Council, but Coningsby & Mareham's 2 conservation areas still limit permitted development on those streets. We check your address against those designations before a line is drawn.
Many Coningsby & Mareham 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 East Lindsey 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 East Lindsey 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 East Lindsey District Council's real householder decision record, pulled from official planning statistics and updated as new data lands. East Lindsey District Council granted 94% of its householder applications in the year to 31 March 2026, and Revesby shapes what is approved here. 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 Revesby, Tattershall and Coningsby, 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 steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building, that is usually the most efficient use of the roof; where the stock is trussed-rafter roofs typical of 2000s building, a hip-to-gable followed by a rear dormer unlocks far more space, though it needs a full application.
The 4,510 homes here are 15% pre-1900, 13% 2000-2008, 11% 1945-1954, 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 East Lindsey 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 Coningsby & Mareham roofs come up most often:
Loft conversion drawings for Revesby's designated conservation area — measured, volume-checked and drawn to East Lindsey District Council's guidance.
Loft conversion drawings for Tattershall's designated conservation area — measured, volume-checked and drawn to East Lindsey District Council's guidance.
Loft conversion drawings for Coningsby's civil parish within Coningsby & Mareham — measured, volume-checked and drawn to East Lindsey District Council's guidance.
Loft conversion drawings for Tumby's civil parish within Coningsby & Mareham — measured, volume-checked and drawn to East Lindsey District Council's guidance.
Loft conversion drawings for Revesby's civil parish within Coningsby & Mareham — measured, volume-checked and drawn to East Lindsey District Council's guidance.
Loft conversion drawings for Tattershall's civil parish within Coningsby & Mareham — measured, volume-checked and drawn to East Lindsey District Council's guidance.
The right loft in Coningsby & Mareham 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 East Lindsey 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 Revesby and Tattershall and Article 4 directions can remove permitted-development rights.
A fixed process built around how East Lindsey District Council validates and decides householder loft applications — most drawings are submission-ready within seven days of survey.
Tell us your Coningsby & Mareham 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 East Lindsey 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 East Lindsey District Council's roof-alteration guidance.
We submit the certificate or application, manage validation and case-officer queries, and revise the drawings free until East Lindsey 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 Coningsby & Mareham the main exceptions are hip-to-gable conversions, dormers visible from the highway, and homes in conservation areas such as Revesby and Tattershall or on streets with an Article 4 direction. East Lindsey District Council is the decision-maker.
Generally no. In conservation areas including Revesby and Tattershall, Class B permitted-development rights for lofts are removed, so a rear dormer that would be lawful elsewhere needs a full application to East Lindsey District Council. No Article 4 direction is recorded for East Lindsey District Council, but Coningsby & Mareham's 2 conservation areas still limit permitted development on those streets. We check your exact address before drawing.
On steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building, common across Coningsby & Mareham, a rear dormer is usually the most efficient conversion and often permitted development. Where the roof is trussed-rafter roofs typical of 2000s 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. East Lindsey District Council is the decision-maker.
A householder planning application in Coningsby & Mareham 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. East Lindsey District Council is the decision-maker.
If your dormer is permitted development, a lawful development certificate from East Lindsey 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. This applies to your Coningsby & Mareham address specifically.
Every roof is different, so we quote each Coningsby & Mareham project individually — a fixed, no-obligation price back within one working day. The quote covers the full drawing pack with free revisions until East Lindsey 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.