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House extension plans in Huntingdonshire — a glazed single-storey rear extension on a period home
Huntingdonshire · House Extension Drawings & Planning

House extension plans in Huntingdonshire

Single-storey, double-storey, rear and side extension drawings for Huntingdonshire homes — measured to Huntingdonshire District Council's design guidance, delivered in days and revised free until your decision, with a free approval-odds check before you commit.

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Huntingdonshire planning decisions and design rules

Huntingdonshire District Council granted 95% of the householder planning decisions it made in its latest published year — 8 points above the 87% England-wide householder average. Huntingdonshire contains ABBOTS RIPTON, ALCONBURY, ALCONBURY WESTON conservation areas (ABBOTS RIPTON designated 1979), 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. Huntingdonshire carries at least one Article 4 direction, and conservation areas including ABBOTS RIPTON, ALCONBURY and ALCONBURY WESTON remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Huntingdonshire is determined against an 8-week statutory target.

ABBOTS RIPTON (conservation area designated in 1979), ALCONBURY (conservation area designated in 1977), ALCONBURY WESTON (designated conservation area), Abbotsley (designated conservation area), Brampton (designated conservation area), Broughton (conservation area designated in 1978), Buckden (conservation area designated in 1974), Bythorn (designated conservation area), Alconbury (ward of Huntingdonshire), Brampton (ward of Huntingdonshire), Buckden (ward of Huntingdonshire), Fenstanton (ward of Huntingdonshire), Great Paxton (ward of Huntingdonshire), Great Staughton (ward of Huntingdonshire), Huntingdon East (ward of Huntingdonshire) and Huntingdon North (ward of Huntingdonshire) — these are the Huntingdonshire pockets our drawings cover most. Heritage designations here include ABBOTS RIPTON, ALCONBURY, ALCONBURY WESTON, Abbotsley, Brampton, Broughton, Buckden and Bythorn. Huntingdonshire District Council weighs each proposal against the adopted Huntingdonshire local plan and Huntingdonshire District Council's design guidance for householder work, where the 52,450 homes here are 13% 1965-1972, 8% 1973-1982, 8% 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 (13% of 52,450 homes), 1970s and early-1980s houses (8%) and 1980s estate houses (8%).

Why a Huntingdonshire scheme is judged on Huntingdonshire terms

What is permitted in Huntingdonshire turns on designation first, so that is where we start: ABBOTS RIPTON (conservation area designated in 1979), ALCONBURY (conservation area designated in 1977), ALCONBURY WESTON (designated conservation area), Abbotsley (designated conservation area), Brampton (designated conservation area), Broughton (conservation area designated in 1978), Buckden (conservation area designated in 1974) and Bythorn (designated conservation area). Inside those boundaries permitted development is curtailed and Huntingdonshire 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, Huntingdonshire takes in Alconbury, Brampton, Buckden, Fenstanton, Great Paxton, Great Staughton, Huntingdon East and Huntingdon North. Huntingdonshire District Council has 6 recorded Article 4 directions, removing permitted development for painting the exterior — check the address before assuming PD applies in the district.

On stock, Huntingdonshire is late-1960s and early-1970s houses (13% of 52,450 homes), 1970s and early-1980s houses (8%) and 1980s estate houses (8%) — 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. Huntingdonshire District Council decided 512 householder applications in the latest published year and granted 95%, with 55% issued inside the eight-week target. We draw to that record rather than to a national average.

The full build-period split for Huntingdonshire 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.

Huntingdonshire District Council also decides for Alconbury, Brampton, Buckden, Fenstanton, Great Paxton, Great Staughton, Huntingdon East and Huntingdon North, so a decision in Huntingdonshire 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 1 Galley Hill, Hemingford Grey, Poultry Houses, High Bank, Hill View, Spaldwick Road, Stow Longa, Land East Of Crosshall Road, St Neots and Oundle Road, Alwalton. 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.

Huntingdonshire by the published data

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

MeasureHuntingdonshire
Dwellings recorded52,450
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 191911%
Built 1919–19395%
Built 1945–200869%
Conservation areas in Huntingdonshire8 (ABBOTS RIPTON, ALCONBURY…)
Conservation areas district-wide59
Article 4 directions recorded6
Householder applications decided512
Householder applications granted95%
Decided within 8 weeks55%

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

Extension plans built around Huntingdonshire District Council's rules

Huntingdonshire homes come in a handful of recurring shapes, and each one points to a different extension. The borough is built largely from late-1960s and early-1970s houses (13% of 52,450 homes), 1970s and early-1980s houses (8%) and 1980s estate houses (8%), so a Victorian terrace usually wants a rear or side-return infill, while an interwar semi has room for a wider single-storey wrap or a two-storey side addition. Huntingdonshire District Council judges every one of them against the adopted Huntingdonshire local plan and Huntingdonshire District Council's design guidance for householder work, weighing footprint, height and the impact on the house next door before it looks at the elevations.

That is why the drawings decide the outcome. We set the extension depth against the permitted-development limits precisely, keep the eaves and ridge within the allowances, and plot the 45-degree daylight lines to the neighbours' windows so the case officer can see the amenity test is passed. Huntingdonshire contains ABBOTS RIPTON, ALCONBURY, ALCONBURY WESTON conservation areas (ABBOTS RIPTON designated 1979), so materials, fenestration and roof form are assessed against the appraisal, so we design around it from the first sketch rather than discover it at validation.

Huntingdonshire also protects whole streets — ABBOTS RIPTON, ALCONBURY, ALCONBURY WESTON, Abbotsley, Brampton, Broughton, Buckden and Bythorn among them. Huntingdonshire District Council has 6 recorded Article 4 directions, removing permitted development for painting the exterior — check the address before assuming PD applies in the district. On designated land the larger-home extension route and most side extensions stop being permitted development, so we confirm your address against those layers before drawing a line.

Isometric house extension drawing for a Huntingdonshire home

Do I need planning permission to extend my house in Huntingdonshire?

Plenty of Huntingdonshire extensions are permitted development and need no planning application — a single-storey rear extension within the depth and height limits is the common case. You will normally need to apply to Huntingdonshire District Council if any of these apply:

  • The single-storey rear extension is deeper than 3 metres on a terrace or semi, or 4 metres on a detached house (6m/8m needs prior approval under the larger-home scheme)
  • It is a two-storey or double-storey extension, or the rear extension is higher than 4 metres
  • A side extension is wider than half the original house, or more than one storey
  • Any part projects forward of the principal (front) elevation, or the extension covers more than half the garden
  • Your home is in a conservation area such as ABBOTS RIPTON and ALCONBURY, where the larger-home route and side extensions are not permitted development
  • An Article 4 direction applies to your street — Huntingdonshire has several, so this is checked first

Huntingdonshire extension approval rates — live from council data

Below is Huntingdonshire District Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Huntingdonshire District Council granted 95% of 512 householder decisions in the year to 31 March 2026, 55% of them inside eight weeks. A complete, policy-literate extension pack anticipates those pressure points before submission, which is why professionally drawn applications are decided faster and refused less often than DIY ones.

Source: MHCLG planning application statistics (householder decisions, England, 1 April 2025 - 31 March 2026). Compare every borough on our London approval-rate league table.

95%householder applications approved in Huntingdonshire
87%national average — Huntingdonshire is 8 points above the national average

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Which extensions get approved in Huntingdonshire

Across ABBOTS RIPTON, ALCONBURY and ALCONBURY WESTON, the extension that lands most often is the single-storey rear addition — a glazed kitchen-diner across the back of the house, kept within the permitted-development depth or taken to a full application where the ground floor wants more. On the borough's late-1960s and early-1970s houses (13% of 52,450 homes), a side-return infill frequently pairs with it to square off the plan; on wider 1980s estate houses (8%), a two-storey side or rear extension can add a bedroom above without swallowing the garden.

The 52,450 homes here are 13% 1965-1972, 8% 1973-1982, 8% 1983-1992, which is what sets the realistic roof and rear-projection options. We size the extension to the amenity and daylight tests, match the roof and materials to the host house, and keep enough garden to satisfy Huntingdonshire District Council's space standards — so the scheme answers the borough's questions before an objection can raise them. Where permitted-development rights are used up or removed, we prepare the householder application to the council's extension design guidance instead.

Single-storey rear extension opening onto the garden of a Huntingdonshire house

House extensions across Huntingdonshire

We draw extensions on every street in the borough. A few of the neighbourhoods where Huntingdonshire projects come up most often:

ABBOTS RIPTON

Extension drawings for ABBOTS RIPTON's conservation area designated in 1979 — footprint-checked, daylight-tested and drawn to Huntingdonshire District Council's guidance.

ALCONBURY

Extension drawings for ALCONBURY's conservation area designated in 1977 — footprint-checked, daylight-tested and drawn to Huntingdonshire District Council's guidance.

ALCONBURY WESTON

Extension drawings for ALCONBURY WESTON's designated conservation area — footprint-checked, daylight-tested and drawn to Huntingdonshire District Council's guidance.

Abbotsley

Extension drawings for Abbotsley's designated conservation area — footprint-checked, daylight-tested and drawn to Huntingdonshire District Council's guidance.

Brampton

Extension drawings for Brampton's designated conservation area — footprint-checked, daylight-tested and drawn to Huntingdonshire District Council's guidance.

Broughton

Extension drawings for Broughton's conservation area designated in 1978 — footprint-checked, daylight-tested and drawn to Huntingdonshire District Council's guidance.

Which extension suits your Huntingdonshire home?

The right extension in Huntingdonshire depends on your house type and how much garden you can give up. This is how the main options compare on planning route and what they add.

Extension typePermitted development?What it addsWhat Huntingdonshire District Council checks
Single-storey rearOften, within 3m/4m depth (6m/8m via prior approval)Bigger kitchen-diner across the backDepth, height, neighbour daylight (45°)
Side-return infillSometimes, if within width and height limitsSquares off an L-shaped ground floorWidth vs the original house, glazing to boundary
Two-storey rear/sideNo — full applicationExtra bedroom or bathroom aboveBulk, overlooking, 7m rear-boundary gap
Wraparound (rear + side)No — full applicationWhole-width open-plan ground floorCombined footprint and garden retained

Route depends on your street — conservation areas such as ABBOTS RIPTON and ALCONBURY and Article 4 directions can remove permitted-development rights.

Four steps to an approved Huntingdonshire extension

A fixed process built around how Huntingdonshire District Council validates and decides householder extension applications — most drawings are submission-ready within seven days of survey.

  1. 1

    Free approval check

    Tell us your Huntingdonshire postcode and house type. We confirm your conservation and Article 4 status, how much permitted-development depth you have left, and score your odds against live Huntingdonshire District Council decisions.

  2. 2

    Measured survey

    We measure the existing footprint, floor and eaves levels, boundary distances and the neighbours' window positions — the numbers the depth limits and daylight tests depend on.

  3. 3

    Extension design & drawings

    Chartered designers develop the single-storey, two-storey or side extension to your brief, drawn inside the permitted-development limits or to Huntingdonshire District Council's extension design guidance.

  4. 4

    Submission & follow-through

    We submit the certificate, prior-approval notice or application, manage validation and case-officer queries, and revise the drawings free until Huntingdonshire District Council issues its decision.

Frequently asked questions

Do I need planning permission to extend my house in Huntingdonshire?

Not always. A single-storey rear extension up to 3 metres deep on a terrace or semi, or 4 metres on a detached house, and no higher than 4 metres, is usually permitted development. In Huntingdonshire you will need to apply to Huntingdonshire District Council for two-storey extensions, side extensions wider than half the house, anything forward of the front wall, deeper rear extensions under the larger-home prior-approval route, and any extension in a conservation area such as ABBOTS RIPTON and ALCONBURY.

How deep can a single-storey rear extension go in Huntingdonshire without planning permission?

Standard permitted development allows 3 metres on a terraced or semi-detached house and 4 metres on a detached one. The larger-home extension scheme can double that to 6 or 8 metres, but it needs a prior-approval notification to Huntingdonshire District Council and a neighbour-consultation period, and it does not apply on designated land such as Huntingdonshire's conservation areas. We confirm which route your property qualifies for before drawing.

Can I build a double-storey extension in Huntingdonshire?

Two-storey and double-storey extensions almost always need a full householder application to Huntingdonshire District Council, because they fall outside permitted development on most homes. The council looks closely at bulk, overlooking of neighbours and the 7-metre gap a two-storey rear extension must keep from the rear boundary. We design to those tests and show the daylight and privacy angles on the drawings.

How long does Huntingdonshire District Council take to decide an extension application?

A householder planning application in Huntingdonshire runs to a statutory eight-week target, a larger-home prior-approval notification to around six weeks including the neighbour-consultation period, and a lawful development certificate to eight weeks. Incomplete submissions stall at validation, so we submit a complete pack and manage officer queries to keep the decision on schedule. Huntingdonshire District Council is the decision-maker.

Will my extension in Huntingdonshire need building regulations approval as well as planning?

Yes — planning permission and building regulations are separate consents, and almost every extension needs both. Planning governs whether you can build it; building control governs how it is built, covering structure, insulation, drainage and fire safety. We prepare the building-regulations drawings alongside the planning set so Huntingdonshire District Council's building control or an approved inspector can sign the work off.

How much do extension plans in Huntingdonshire cost?

Every house and brief is different, so we price each Huntingdonshire extension individually and send a fixed, no-obligation quote back within one working day. It covers the full drawing pack with free revisions until Huntingdonshire District Council approves, and we tell you upfront whether your extension qualifies as permitted development. Call 020 7864 7245 to get started.

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