Single-storey, double-storey, rear and side extension drawings for St Ives South 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.
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. St Ives South contains the ST IVES conservation area (ST IVES designated 1978), 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.
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. St Ives South carries at least one Article 4 direction, and conservation areas including ST IVES remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in St Ives South is determined against an 8-week statutory target.
ST IVES (conservation area designated in 1978), Fenstanton (civil parish within St Ives South) and St. Ives (civil parish within St Ives South) — these are the St Ives South pockets our drawings cover most. Heritage designations here include ST IVES. Huntingdonshire District Council weighs each proposal against Huntingdonshire District Council's development plan and the design policies it applies to householder applications, where the 3,610 homes here are 14% 1993-1999, 13% 1965-1972, 12% pre-1900, which is what sets the realistic roof and rear-projection options. On roofs the borough is trussed-rafter roofs typical of 1990s building and shallow-pitched roofs and integral garages typical of that period's building, over 1990s estate houses (14% of 3,610 homes), late-1960s and early-1970s houses (13%) and Victorian and earlier houses (12%).
What is permitted in St Ives South turns on designation first, so that is where we start: ST IVES (conservation area designated in 1978). 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, St Ives South takes in Fenstanton and St. Ives. Huntingdonshire District Council has 6 recorded Article 4 directions, removing permitted development for painting the exterior — check the address before assuming PD applies in St Ives South.
On stock, St Ives South is 1990s estate houses (14% of 3,610 homes), late-1960s and early-1970s houses (13%) and Victorian and earlier houses (12%) — which is why trussed-rafter roofs typical of 1990s building and shallow-pitched roofs and integral garages typical of that period's 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 St Ives South runs pre-1900 12% (430 homes), 1900-1918 2% (80 homes), 1919-1929 1% (30 homes), 1930-1939 5% (170 homes), 1945-1954 7% (260 homes), 1955-1964 5% (170 homes), 1965-1972 13% (460 homes), 1973-1982 9% (320 homes), 1983-1992 11% (410 homes), 1993-1999 14% (490 homes) and 2000-2008 6% (210 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 St Ives South 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.
Published figures for St Ives South 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.
| Measure | St Ives South |
|---|---|
| Dwellings recorded | 3,610 |
| Built pre-1900 | 430 (12%) |
| Built 1900-1918 | 80 (2%) |
| Built 1919-1929 | 30 (1%) |
| Built 1930-1939 | 170 (5%) |
| Built 1945-1954 | 260 (7%) |
| Built 1955-1964 | 170 (5%) |
| Built 1965-1972 | 460 (13%) |
| Built 1973-1982 | 320 (9%) |
| Built 1983-1992 | 410 (11%) |
| Built 1993-1999 | 490 (14%) |
| Built 2000-2008 | 210 (6%) |
| Built before 1919 | 14% |
| Built 1919–1939 | 6% |
| Built 1945–2008 | 64% |
| Conservation areas in St Ives South | 1 (ST IVES) |
| Conservation areas district-wide | 59 |
| Article 4 directions recorded | 6 |
| Householder applications decided | 512 |
| Householder applications granted | 95% |
| Decided within 8 weeks | 55% |
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.
St Ives South homes come in a handful of recurring shapes, and each one points to a different extension. The borough is built largely from 1990s estate houses (14% of 3,610 homes), late-1960s and early-1970s houses (13%) and Victorian and earlier houses (12%), 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 Huntingdonshire District Council's development plan and the design policies it applies to householder applications, 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. St Ives South contains the ST IVES conservation area (ST IVES designated 1978), 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.
St Ives South also protects whole streets — ST IVES 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 St Ives South. 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.
Plenty of St Ives South 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:
We draw the footprint, the ridge and eaves heights and the neighbours' daylight on the page — the relationships Huntingdonshire District Council's officers weigh first — and submit a validation-complete pack, whether that is a lawful development certificate, a prior-approval notification or a full householder application.
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 its householder applications in the year to 31 March 2026, and ST IVES shapes what is approved here. 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.
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 ST IVES, Fenstanton and St. Ives, 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 1990s estate houses (14% of 3,610 homes), a side-return infill frequently pairs with it to square off the plan; on wider victorian and earlier houses (12%), a two-storey side or rear extension can add a bedroom above without swallowing the garden.
The 3,610 homes here are 14% 1993-1999, 13% 1965-1972, 12% pre-1900, 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.
We draw extensions on every street in the borough. A few of the neighbourhoods where St Ives South projects come up most often:
Extension drawings for ST IVES's conservation area designated in 1978 — footprint-checked, daylight-tested and drawn to Huntingdonshire District Council's guidance.
Extension drawings for Fenstanton's civil parish within St Ives South — footprint-checked, daylight-tested and drawn to Huntingdonshire District Council's guidance.
Extension drawings for St. Ives's civil parish within St Ives South — footprint-checked, daylight-tested and drawn to Huntingdonshire District Council's guidance.
The right extension in St Ives South 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 type | Permitted development? | What it adds | What Huntingdonshire District Council checks |
|---|---|---|---|
| Single-storey rear | Often, within 3m/4m depth (6m/8m via prior approval) | Bigger kitchen-diner across the back | Depth, height, neighbour daylight (45°) |
| Side-return infill | Sometimes, if within width and height limits | Squares off an L-shaped ground floor | Width vs the original house, glazing to boundary |
| Two-storey rear/side | No — full application | Extra bedroom or bathroom above | Bulk, overlooking, 7m rear-boundary gap |
| Wraparound (rear + side) | No — full application | Whole-width open-plan ground floor | Combined footprint and garden retained |
Route depends on your street — conservation areas such as ST IVES and Article 4 directions can remove permitted-development rights.
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.
Tell us your St Ives South 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.
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.
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.
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.
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 St Ives South 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 ST IVES.
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 St Ives South's conservation areas. We confirm which route your property qualifies for before drawing.
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. This applies to your St Ives South address specifically.
A householder planning application in St Ives South 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.
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. This applies to your St Ives South address specifically.
Every house and brief is different, so we price each St Ives South 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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