Two-storey extension drawings for Mersea and Pyefleet homes — bedroom above, living space below, drawn against the 3-metre projection and 7-metre boundary rules and to Colchester City Council's design guidance, delivered in days and revised free until your decision.
Colchester City Council granted 84% of the householder planning decisions it made in its latest published year — 3 points below the 87% England-wide householder average. Mersea and Pyefleet contains FINGRINGHOE, WEST MERSEA conservation areas (FINGRINGHOE designated 1980), 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.
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 FINGRINGHOE and WEST MERSEA those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Mersea and Pyefleet is determined against an 8-week statutory target.
FINGRINGHOE (conservation area designated in 1980), WEST MERSEA (conservation area designated in 1989), Abberton (civil parish within Mersea and Pyefleet), East Mersea (civil parish within Mersea and Pyefleet), Fingringhoe (civil parish within Mersea and Pyefleet), Langenhoe (civil parish within Mersea and Pyefleet), Peldon (civil parish within Mersea and Pyefleet) and West Mersea (civil parish within Mersea and Pyefleet) — these are the Mersea and Pyefleet pockets our drawings cover most. Heritage designations here include FINGRINGHOE and WEST MERSEA. Colchester City Council weighs each proposal against the adopted Colchester local plan and Colchester City Council's design guidance for householder work, where the 4,820 homes here are 17% 1965-1972, 16% 1973-1982, 13% 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 trussed roofs typical of 1970s building, over late-1960s and early-1970s houses (17% of 4,820 homes), 1970s and early-1980s houses (16%) and 1980s estate houses (13%).
Mersea and Pyefleet's designated heritage is specific, and it is the first thing we check against your address: FINGRINGHOE (conservation area designated in 1980) and WEST MERSEA (conservation area designated in 1989). Inside those boundaries permitted development is curtailed and Colchester City 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, Mersea and Pyefleet takes in Abberton, East Mersea, Fingringhoe, Langenhoe, Peldon and West Mersea. No Article 4 direction is recorded for Colchester City Council, but Mersea and Pyefleet's 2 conservation areas still limit permitted development on those streets.
On stock, Mersea and Pyefleet is late-1960s and early-1970s houses (17% of 4,820 homes), 1970s and early-1980s houses (16%) and 1980s estate houses (13%) — which is why shallow-pitched roofs and integral garages typical of that period's building and shallow trussed roofs typical of 1970s building govern what a loft or rear projection can realistically be. Colchester City Council decided 579 householder applications in the latest published year and granted 84%, with 79% issued inside the eight-week target. Those are the numbers our drawings are prepared against.
The full build-period split for Mersea and Pyefleet runs pre-1900 9% (410 homes), 1900-1918 5% (220 homes), 1919-1929 4% (180 homes), 1930-1939 7% (320 homes), 1945-1954 6% (270 homes), 1955-1964 7% (350 homes), 1965-1972 17% (800 homes), 1973-1982 16% (760 homes), 1983-1992 13% (610 homes), 1993-1999 6% (290 homes) and 2000-2008 7% (340 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.
Colchester City Council also decides for Castle, Lexden and Braiswick, Marks Tey and Layer and Rural North, so a decision in Mersea and Pyefleet 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 Mersea and Pyefleet and Colchester City Council. These are the numbers that decide what is realistic on your street, so we work from them rather than from national averages.
| Measure | Mersea and Pyefleet |
|---|---|
| Dwellings recorded | 4,820 |
| Built pre-1900 | 410 (9%) |
| Built 1900-1918 | 220 (5%) |
| Built 1919-1929 | 180 (4%) |
| Built 1930-1939 | 320 (7%) |
| Built 1945-1954 | 270 (6%) |
| Built 1955-1964 | 350 (7%) |
| Built 1965-1972 | 800 (17%) |
| Built 1973-1982 | 760 (16%) |
| Built 1983-1992 | 610 (13%) |
| Built 1993-1999 | 290 (6%) |
| Built 2000-2008 | 340 (7%) |
| Built before 1919 | 13% |
| Built 1919–1939 | 10% |
| Built 1945–2008 | 71% |
| Conservation areas in Mersea and Pyefleet | 2 (FINGRINGHOE, WEST MERSEA) |
| Conservation areas district-wide | 24 |
| Article 4 directions recorded | 0 |
| Householder applications decided | 579 |
| Householder applications granted | 84% |
| Decided within 8 weeks | 79% |
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 Colchester City Council's own, from MHCLG live table PS2 for the year to 31 March 2026.
Adding at first floor changes the question the case officer asks. A single-storey extension is judged mostly on daylight and garden loss; a two-storey extension is judged on overlooking, bulk against the neighbouring roofline, and whether it reads as part of the house or bolted onto it. Mersea and Pyefleet is largely late-1960s and early-1970s houses (17% of 4,820 homes), 1970s and early-1980s houses (16%) and 1980s estate houses (13%), and shallow-pitched roofs and integral garages typical of that period's building and shallow trussed roofs typical of 1970s building set what a matching roof actually means here.
The permitted-development route exists but is narrow: 3 metres of rear projection, a 7-metre stand-off from the rear boundary, eaves and ridge no higher than the original, and side-facing upper windows obscure-glazed and non-opening below 1.7 metres above floor level. Most two-storey schemes fail one of those, usually the 7-metre boundary rule on a shorter garden, and go in as a full application instead. We establish which route applies before designing, because it changes the drawing set.
Mersea and Pyefleet contains FINGRINGHOE, WEST MERSEA conservation areas (FINGRINGHOE designated 1980), so materials, fenestration and roof form are assessed against the appraisal. No Article 4 direction is recorded for Colchester City Council, but Mersea and Pyefleet's 2 conservation areas still limit permitted development on those streets.
Some two-storey rear extensions are permitted development. You will need a full application to Colchester City Council if any of these apply:
We set the projection and boundary distance on the site plan, prove the roof-pitch match on the elevations, and specify obscure glazing on the side windows — the three things Colchester City Council checks first — then submit a validation-complete pack.
Below is Colchester City Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Colchester City Council granted 84% of its householder applications in the year to 31 March 2026, and FINGRINGHOE shapes what is approved here. Two-storey schemes attract more neighbour comment than any other householder work, so the overlooking and daylight case has to be made on the drawings.
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 FINGRINGHOE, WEST MERSEA and Abberton, the schemes that succeed set the first floor back from the ground floor, keep the ridge below the original, and treat the flank wall as blank or obscure-glazed. On late-1960s and early-1970s houses (17% of 4,820 homes), matching the eaves line matters more than matching the brick: an extension that carries the existing eaves through reads as original even in a different material.
The 4,820 homes here are 17% 1965-1972, 16% 1973-1982, 13% 1983-1992, which is what sets the realistic roof and rear-projection options. We draw the 45-degree daylight test from the neighbour's nearest habitable window, show the window positions in section, and set out the steel and foundation implications early — a two-storey extension changes the load path, so the structural design and the planning design have to be developed together rather than in sequence.
We draw two-storey extensions across Mersea and Pyefleet. A few of the areas where they come up most often:
Two storey extension drawings for FINGRINGHOE — conservation area designated in 1980 — dimensioned against the 3m and 7m limits and drawn to Colchester City Council's guidance.
Two storey extension drawings for WEST MERSEA — conservation area designated in 1989 — dimensioned against the 3m and 7m limits and drawn to Colchester City Council's guidance.
Two storey extension drawings for Abberton — civil parish within Mersea and Pyefleet — dimensioned against the 3m and 7m limits and drawn to Colchester City Council's guidance.
Two storey extension drawings for East Mersea — civil parish within Mersea and Pyefleet — dimensioned against the 3m and 7m limits and drawn to Colchester City Council's guidance.
Two storey extension drawings for Fingringhoe — civil parish within Mersea and Pyefleet — dimensioned against the 3m and 7m limits and drawn to Colchester City Council's guidance.
Two storey extension drawings for Langenhoe — civil parish within Mersea and Pyefleet — dimensioned against the 3m and 7m limits and drawn to Colchester City Council's guidance.
The first-floor limits are tighter than the ground-floor ones. This is how the common cases compare.
| Scheme | Permitted development? | Deciding limit | What Colchester City Council checks |
|---|---|---|---|
| Two-storey rear, 3m projection, 7m+ to boundary | Often yes | 3m projection / 7m boundary | Roof match, side-window glazing |
| Two-storey rear, under 7m to boundary | No — full application | Rear-boundary distance | Overlooking, daylight, garden loss |
| Two-storey side extension | No — full application | Side elevation | Gap to boundary, street rhythm |
| Two-storey wraparound | No — full application | Combined footprint | Bulk, massing, neighbour amenity |
| Any two-storey on designated land | No — full application | Designation | Character and appearance |
Limits from the GPDO 2015, Schedule 2, Part 1, Class A — two-storey rear extension conditions.
A fixed process built around how Colchester City Council validates and decides two-storey applications.
Send us your Mersea and Pyefleet postcode and garden depth. We measure the 7-metre boundary rule against your plot, confirm designation status, and score your odds against live Colchester City Council decisions.
We measure the original rear wall, eaves and ridge heights, garden depth and every neighbouring window that faces the site — the inputs the daylight and overlooking case is built from.
Chartered designers develop the two-storey addition to your brief with the roof and eaves resolved, and we coordinate the load path so the structural scheme and the planning scheme are the same building.
We submit the application, manage validation and case-officer queries, and revise the drawings free until Colchester City Council issues its decision.
Often, but not always. A two-storey rear extension can be permitted development if it projects no more than 3 metres, sits at least 7 metres from the rear boundary, does not exceed the existing eaves and ridge, and has obscure-glazed non-opening side windows below 1.7 metres. In Mersea and Pyefleet, the 7-metre rule is what most commonly forces a full application to Colchester City Council.
No part of a permitted-development two-storey rear extension may come within 7 metres of the boundary opposite the rear wall of the house. It exists to protect the neighbour behind you from being overlooked at first floor. On shorter Mersea and Pyefleet gardens this is decisive, and we measure it on survey before any design work rather than discovering it at validation. Colchester City Council is the decision-maker.
Not under permitted development — two-storey side extensions always need a full application to Colchester City Council. They are assessed on the gap to the boundary, whether the street's rhythm of spaces between houses survives, and whether the extension is subordinate to the original. Setting the first floor back from the front building line and down from the ridge is what usually makes the difference. This applies to your Mersea and Pyefleet address specifically.
Overlooking is the most common objection, and it is answerable on the drawings. We position habitable-room windows away from neighbouring gardens, obscure-glaze and fix shut anything on the flank below 1.7 metres, and show the sight lines in section. Where the geometry is tight, a rooflight or a high-level window gives the same daylight without the mutual overlooking that draws objections. This applies to your Mersea and Pyefleet address specifically. Colchester City Council is the decision-maker.
Almost certainly. Excavating within 3 metres of a neighbouring structure and building on or up to the boundary both trigger the Party Wall etc. Act 1996, and a two-storey extension usually does both. It is entirely separate from Colchester City Council's planning decision, so we flag the notice period early and detail the junction on the drawings. This applies to your Mersea and Pyefleet address specifically.
Yes. Adding a floor changes the load path from roof to foundation, so beams, padstones and foundation depths all need designing and calculating for building control. Planning and building regulations are separate consents, and the structural set is what building control assesses — we prepare both so the approved scheme is the buildable one. This applies to your Mersea and Pyefleet address specifically. Colchester City Council is the decision-maker.
We quote each Mersea and Pyefleet two-storey extension individually, because plot depth, roof form and structural complexity vary house to house, and send a fixed, no-obligation quote within one working day. It covers the drawing pack with free revisions until Colchester City Council approves. 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.