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Two storey extension plans in North Norfolk — a two-storey rear addition to a family house
North Norfolk · Two Storey Extension Drawings

Two storey extension plans in North Norfolk

Two-storey extension drawings for North Norfolk homes — bedroom above, living space below, drawn against the 3-metre projection and 7-metre boundary rules and to North Norfolk District Council's design guidance, delivered in days and revised free until your decision.

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Householder planning in North Norfolk — the record

North Norfolk District Council granted 96% of the householder planning decisions it made in its latest published year — 9 points above the 87% England-wide householder average. North Norfolk contains Aldborough, Baconsthorpe, Bacton conservation areas (Aldborough designated 1989), 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.

The permitted-development ceilings are fixed: 40m³ of new roof volume for a terraced loft and 50m³ for a semi or detached house under Class B, plus a 3m single-storey rear extension on a terrace or 4m on a detached house under Class A. North Norfolk carries at least one Article 4 direction, and conservation areas including Aldborough, Baconsthorpe and Bacton remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in North Norfolk is determined against an 8-week statutory target.

Aldborough (conservation area designated in 1989), Baconsthorpe (conservation area designated in 1975), Bacton (conservation area designated in 1974), Bale Village (conservation area designated in 1993), Bessingham (conservation area designated in 1975), Binham (conservation area designated in 1974), Blakeney (conservation area designated in 1974), Brinton (conservation area designated in 1975), Bacton (ward of North Norfolk), Coastal (ward of North Norfolk), Cromer Town (ward of North Norfolk), Erpingham (ward of North Norfolk), Gresham (ward of North Norfolk), Happisburgh (ward of North Norfolk), Hickling (ward of North Norfolk) and Holt (ward of North Norfolk) — these are the North Norfolk pockets our drawings cover most. Heritage designations here include Aldborough, Baconsthorpe, Bacton, Bale Village, Bessingham, Binham, Blakeney and Brinton. North Norfolk District Council weighs each proposal against the adopted North Norfolk local plan and North Norfolk District Council's design guidance for householder work, where the 40,880 homes here are 22% pre-1900, 8% 1973-1982, 6% 1965-1972, 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 shallow trussed roofs typical of 1970s building, over Victorian and earlier houses (22% of 40,880 homes), 1970s and early-1980s houses (8%) and late-1960s and early-1970s houses (6%).

North Norfolk: the local constraints that decide your scheme

Before anything is drawn we check your address against the designations that apply in North Norfolk: Aldborough (conservation area designated in 1989), Baconsthorpe (conservation area designated in 1975), Bacton (conservation area designated in 1974), Bale Village (conservation area designated in 1993), Bessingham (conservation area designated in 1975), Binham (conservation area designated in 1974), Blakeney (conservation area designated in 1974) and Brinton (conservation area designated in 1975). Inside those boundaries permitted development is curtailed and North Norfolk 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, North Norfolk takes in Bacton, Coastal, Cromer Town, Erpingham, Gresham, Happisburgh, Hickling and Holt. North Norfolk District Council has 42 recorded Article 4 directions, removing permitted development for painting the exterior — check the address before assuming PD applies in the district.

On stock, North Norfolk is Victorian and earlier houses (22% of 40,880 homes), 1970s and early-1980s houses (8%) and late-1960s and early-1970s houses (6%) — which is why steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building and shallow trussed roofs typical of 1970s building govern what a loft or rear projection can realistically be. North Norfolk District Council decided 494 householder applications in the latest published year and granted 96%, with 61% issued inside the eight-week target. That decision record, not a national figure, is what we design to.

The full build-period split for North Norfolk 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.

North Norfolk District Council also decides for Bacton, Coastal, Cromer Town, Erpingham, Gresham, Happisburgh, Hickling and Holt, so a decision in North Norfolk 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 Article 4 Direction - Car Park, Runton Road, Cromer, Article 4 Direction - Land At Bacton, Article 4 Direction - Land At Barton Turf and Article 4 Direction - Land At Barton Turf and Neatishead. 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.

North Norfolk housing stock and council decisions, in figures

Published figures for North Norfolk and North Norfolk District Council. These are the numbers that decide what is realistic on your street, so we work from them rather than from national averages.

MeasureNorth Norfolk
Dwellings recorded40,880
Built pre-1900190 (3%)
Built 1900-191830 (0%)
Built 1919-192910 (0%)
Built 1930-1939350 (6%)
Built 1945-1954170 (3%)
Built 1955-19641,850 (30%)
Built 1965-19721,990 (33%)
Built 1973-1982260 (4%)
Built 1983-1992310 (5%)
Built 1993-1999220 (4%)
Built 2000-2008170 (3%)
Built before 191926%
Built 1919–19399%
Built 1945–200853%
Conservation areas in North Norfolk8 (Aldborough, Baconsthorpe…)
Conservation areas district-wide91
Article 4 directions recorded42
Householder applications decided494
Householder applications granted96%
Decided within 8 weeks61%

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 North Norfolk District Council's own, from MHCLG live table PS2 for the year to 31 March 2026.

The three tests a North Norfolk two-storey extension has to pass

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. North Norfolk is largely Victorian and earlier houses (22% of 40,880 homes), 1970s and early-1980s houses (8%) and late-1960s and early-1970s houses (6%), and steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 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.

North Norfolk contains Aldborough, Baconsthorpe, Bacton conservation areas (Aldborough designated 1989), so materials, fenestration and roof form are assessed against the appraisal. North Norfolk District Council has 42 recorded Article 4 directions, removing permitted development for painting the exterior — check the address before assuming PD applies in the district.

Isometric two storey extension drawing for a North Norfolk house

Does a two storey extension need planning permission in North Norfolk?

Some two-storey rear extensions are permitted development. You will need a full application to North Norfolk District Council if any of these apply:

  • The extension projects more than 3 metres beyond the original rear wall
  • Any part comes within 7 metres of the rear boundary
  • The eaves or ridge would sit higher than the existing house
  • The extension is to the side, or wraps around to the side at first floor
  • Upper-floor side windows are clear-glazed or open below 1.7 metres
  • The property is on designated land such as Aldborough and Baconsthorpe, where two-storey rights are removed
  • An Article 4 direction applies to your street — always checked first in North Norfolk

North Norfolk two-storey extension approval rates — live council data

Below is North Norfolk District Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. North Norfolk District Council granted 96% of 494 householder decisions in the year to 31 March 2026, 61% of them inside eight weeks. 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.

96%householder applications approved in North Norfolk
87%national average — North Norfolk is 9 points above the national average

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What two-storey extensions get approved in North Norfolk

Across Aldborough, Baconsthorpe and Bacton, 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 victorian and earlier houses (22% of 40,880 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 40,880 homes here are 22% pre-1900, 8% 1973-1982, 6% 1965-1972, 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.

Ground floor created by a two storey extension in North Norfolk

Two-storey extensions across North Norfolk

We draw two-storey extensions across North Norfolk. A few of the areas where they come up most often:

Aldborough

Two storey extension drawings for Aldborough — conservation area designated in 1989 — dimensioned against the 3m and 7m limits and drawn to North Norfolk District Council's guidance.

Baconsthorpe

Two storey extension drawings for Baconsthorpe — conservation area designated in 1975 — dimensioned against the 3m and 7m limits and drawn to North Norfolk District Council's guidance.

Bacton

Two storey extension drawings for Bacton — conservation area designated in 1974 — dimensioned against the 3m and 7m limits and drawn to North Norfolk District Council's guidance.

Bale Village

Two storey extension drawings for Bale Village — conservation area designated in 1993 — dimensioned against the 3m and 7m limits and drawn to North Norfolk District Council's guidance.

Bessingham

Two storey extension drawings for Bessingham — conservation area designated in 1975 — dimensioned against the 3m and 7m limits and drawn to North Norfolk District Council's guidance.

Binham

Two storey extension drawings for Binham — conservation area designated in 1974 — dimensioned against the 3m and 7m limits and drawn to North Norfolk District Council's guidance.

Which two-storey extensions are permitted development in North Norfolk?

The first-floor limits are tighter than the ground-floor ones. This is how the common cases compare.

SchemePermitted development?Deciding limitWhat North Norfolk District Council checks
Two-storey rear, 3m projection, 7m+ to boundaryOften yes3m projection / 7m boundaryRoof match, side-window glazing
Two-storey rear, under 7m to boundaryNo — full applicationRear-boundary distanceOverlooking, daylight, garden loss
Two-storey side extensionNo — full applicationSide elevationGap to boundary, street rhythm
Two-storey wraparoundNo — full applicationCombined footprintBulk, massing, neighbour amenity
Any two-storey on designated landNo — full applicationDesignationCharacter and appearance

Limits from the GPDO 2015, Schedule 2, Part 1, Class A — two-storey rear extension conditions.

Four steps to an approved North Norfolk two-storey extension

A fixed process built around how North Norfolk District Council validates and decides two-storey applications.

  1. 1

    Free approval check

    Send us your North Norfolk postcode and garden depth. We measure the 7-metre boundary rule against your plot, confirm designation status, and score your odds against live North Norfolk District Council decisions.

  2. 2

    Measured survey

    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.

  3. 3

    Design, drawings & structure

    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.

  4. 4

    Submission & follow-through

    We submit the application, manage validation and case-officer queries, and revise the drawings free until North Norfolk District Council issues its decision.

Frequently asked questions

Do I need planning permission for a two storey extension in North Norfolk?

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 North Norfolk, the 7-metre rule is what most commonly forces a full application to North Norfolk District Council.

What is the 7 metre rule for two storey extensions in North Norfolk?

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 North Norfolk gardens this is decisive, and we measure it on survey before any design work rather than discovering it at validation. North Norfolk District Council is the decision-maker.

Can I build a two storey side extension in North Norfolk?

Not under permitted development — two-storey side extensions always need a full application to North Norfolk District 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.

Will a two storey extension in North Norfolk be refused for overlooking?

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 North Norfolk address specifically. North Norfolk District Council is the decision-maker.

Do I need a party wall agreement for a two storey extension in North Norfolk?

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 North Norfolk District Council's planning decision, so we flag the notice period early and detail the junction on the drawings.

Does a two storey extension need structural calculations in North Norfolk?

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 North Norfolk address specifically. North Norfolk District Council is the decision-maker.

How much do two storey extension plans in North Norfolk cost?

We quote each North Norfolk 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 North Norfolk District Council approves. Call 020 7864 7245 to start.

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Two storey extension plans across North Norfolk

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