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

House extension plans in Old Hastings

Single-storey, double-storey, rear and side extension drawings for Old Hastings homes — measured to Hastings Borough 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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Householder planning in Old Hastings — the record

Hastings Borough Council granted 90% of the householder planning decisions it made in its latest published year — 3 points above the 87% England-wide householder average. Old Hastings contains Old Town, Hastings, Tillington Terrace, Hastings conservation areas (Old Town, Hastings designated 1968), 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), Edwardian (1901–1910) and interwar (1918–1939) 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. In conservation areas such as Old Town, Hastings and Tillington Terrace, Hastings those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Old Hastings is determined against an 8-week statutory target.

Old Town, Hastings (conservation area designated in 1968) and Tillington Terrace, Hastings (designated conservation area) — these are the Old Hastings pockets our drawings cover most. Heritage designations here include Old Town, Hastings and Tillington Terrace, Hastings. Hastings Borough Council weighs each proposal against Hastings Borough Council's development plan and the design policies it applies to householder applications, where the 2,840 homes here are 56% pre-1900, 10% 1930-1939, 10% 1900-1918, 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 hipped roofs with shallow pitches typical of 1930s building, over Victorian and earlier houses (56% of 2,840 homes), 1930s semi-detached and detached houses (10%) and Edwardian houses (10%).

Old Hastings: the local constraints that decide your scheme

Before anything is drawn we check your address against the designations that apply in Old Hastings: Old Town, Hastings (conservation area designated in 1968) and Tillington Terrace, Hastings (designated conservation area). Inside those boundaries permitted development is curtailed and Hastings Borough 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.

No Article 4 direction is recorded for Hastings Borough Council, but Old Hastings's 2 conservation areas still limit permitted development on those streets.

On stock, Old Hastings is Victorian and earlier houses (56% of 2,840 homes), 1930s semi-detached and detached houses (10%) and Edwardian houses (10%) — which is why steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building and hipped roofs with shallow pitches typical of 1930s building govern what a loft or rear projection can realistically be. Hastings Borough Council decided 109 householder applications in the latest published year and granted 90%, with 67% issued inside the eight-week target. That decision record, not a national figure, is what we design to.

The full build-period split for Old Hastings runs pre-1900 56% (1,590 homes), 1900-1918 10% (270 homes), 1919-1929 5% (140 homes), 1930-1939 10% (280 homes), 1945-1954 4% (100 homes), 1955-1964 3% (90 homes), 1965-1972 4% (110 homes), 1973-1982 5% (130 homes), 1983-1992 2% (70 homes), 1993-1999 0% (10 homes) and 2000-2008 1% (20 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.

Hastings Borough Council also decides for Castle, Central St Leonards and Maze Hill, so a decision in Old Hastings 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.

Old Hastings housing stock and council decisions, in figures

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

MeasureOld Hastings
Dwellings recorded2,840
Built pre-19001,590 (56%)
Built 1900-1918270 (10%)
Built 1919-1929140 (5%)
Built 1930-1939280 (10%)
Built 1945-1954100 (4%)
Built 1955-196490 (3%)
Built 1965-1972110 (4%)
Built 1973-1982130 (5%)
Built 1983-199270 (2%)
Built 1993-199910 (0%)
Built 2000-200820 (1%)
Built before 191965%
Built 1919–193915%
Built 1945–200819%
Conservation areas in Old Hastings2 (Old Town, Hastings, Tillington Terrace, Hastings)
Conservation areas district-wide18
Article 4 directions recorded0
Householder applications decided109
Householder applications granted90%
Decided within 8 weeks67%

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

Extension plans built around Hastings Borough Council's rules

Old Hastings homes come in a handful of recurring shapes, and each one points to a different extension. The borough is built largely from Victorian and earlier houses (56% of 2,840 homes), 1930s semi-detached and detached houses (10%) and Edwardian houses (10%), 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. Hastings Borough Council judges every one of them against Hastings Borough 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. Old Hastings contains Old Town, Hastings, Tillington Terrace, Hastings conservation areas (Old Town, Hastings designated 1968), 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.

Old Hastings also protects whole streets — Old Town, Hastings and Tillington Terrace, Hastings among them. No Article 4 direction is recorded for Hastings Borough Council, but Old Hastings's 2 conservation areas still limit permitted development on those streets. 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 Old Hastings home

Do I need planning permission to extend my house in Old Hastings?

Plenty of Old Hastings 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 Hastings Borough 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 Old Town, Hastings and Tillington Terrace, Hastings, where the larger-home route and side extensions are not permitted development

Old Hastings extension approval rates — live from council data

Below is Hastings Borough Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Hastings Borough Council granted 90% of its householder applications in the year to 31 March 2026, and Old Town, Hastings 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.

90%householder applications approved in Hastings
87%national average — Hastings is 3 points above the national average

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Which extensions get approved in Old Hastings

Across Old Town, Hastings and Tillington Terrace, Hastings, 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 victorian and earlier houses (56% of 2,840 homes), a side-return infill frequently pairs with it to square off the plan; on wider edwardian houses (10%), a two-storey side or rear extension can add a bedroom above without swallowing the garden.

The 2,840 homes here are 56% pre-1900, 10% 1930-1939, 10% 1900-1918, 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 Hastings Borough 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 Old Hastings house

House extensions across Old Hastings

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

Old Town, Hastings

Extension drawings for Old Town, Hastings's conservation area designated in 1968 — footprint-checked, daylight-tested and drawn to Hastings Borough Council's guidance.

Tillington Terrace, Hastings

Extension drawings for Tillington Terrace, Hastings's designated conservation area — footprint-checked, daylight-tested and drawn to Hastings Borough Council's guidance.

Which extension suits your Old Hastings home?

The right extension in Old Hastings 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 Hastings Borough 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 Old Town, Hastings and Tillington Terrace, Hastings and Article 4 directions can remove permitted-development rights.

Four steps to an approved Old Hastings extension

A fixed process built around how Hastings Borough 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 Old Hastings 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 Hastings Borough 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 Hastings Borough 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 Hastings Borough Council issues its decision.

Frequently asked questions

Do I need planning permission to extend my house in Old Hastings?

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 Old Hastings you will need to apply to Hastings Borough 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 Old Town, Hastings and Tillington Terrace, Hastings.

How deep can a single-storey rear extension go in Old Hastings 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 Hastings Borough Council and a neighbour-consultation period, and it does not apply on designated land such as Old Hastings's conservation areas. We confirm which route your property qualifies for before drawing.

Can I build a double-storey extension in Old Hastings?

Two-storey and double-storey extensions almost always need a full householder application to Hastings Borough 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 Old Hastings address specifically.

How long does Hastings Borough Council take to decide an extension application?

A householder planning application in Old Hastings 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. Hastings Borough Council is the decision-maker.

Will my extension in Old Hastings 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 Hastings Borough Council's building control or an approved inspector can sign the work off. This applies to your Old Hastings address specifically.

How much do extension plans in Old Hastings cost?

Every house and brief is different, so we price each Old Hastings extension individually and send a fixed, no-obligation quote back within one working day. It covers the full drawing pack with free revisions until Hastings Borough 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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