East Cornwall · PL12 · Cornwall Council East
Extensions for Saltash (PL12)
Extensions are the bread and butter of Cornish homes — adding the kitchen-diner the original layout never had, the bedroom for a growing family, or the light and views the back of the house should always have had. The way we approach extension in Saltash starts with a measured walk-round — Saltash is the gateway town to Cornwall over the Tamar, with the Royal Albert Bridge, a steep medieval main street and a strong Plymouth commuter demand for housing, with a building stock that leans toward post-war estates at Latchbrook and Pillmere and medieval Fore Street terraces.
Saltash sits in East Cornwall — just off the A38; covering PL12 from Torpoint, Landrake, St Mellion outward.
- Conservation Area
- Coastal exposure zone
- ✓Fixed-fee planning packages, no surprise invoices
- ✓Measured-survey accuracy from day one
- ✓Same team on paper as on site
- ✓Local to East Cornwall — not a national franchise
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Free Saltash feasibility call
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Page purpose
Drawings only, or drawings through to handover in Saltash?
Both routes are open on a PL12 project, and the honest answer depends on whether you already have a builder you trust. Plenty of Saltash clients take the drawings, tender them locally, then come back to us for the build if the numbers do not stack up.
- Route one: feasibility, planning and a tender-ready technical pack
- Route two: the same pack, then the build under one contract
- Either way the survey and feasibility work is identical, so the decision can wait
- Fees quoted per stage against the PL12 scope, not as one opaque figure
Scope
Scope options for Saltash clients
Clients in Saltash take different slices of this list, and that is deliberate.
Measured survey
An accurate record of what is actually there, which is where most avoidable cost is removed.
Heritage and design statements
Written justification where designation makes the design case as important as the drawing.
Structural coordination
Calculations coordinated with the drawings so building control sees one consistent story.
Full design and build
One contract from first sketch to handover, with the same team on paper and on site.
Construction and technical drawings
1:10 and 1:20 details for the parts of the job builders normally have to guess at.
Local watch-list
The PL12 constraints that shape a extension brief.
Watch #1
Conservation Area controls on materials, window proportions and roof form through central Saltash
Watch #2
Exposure detailing on medieval Fore Street terraces — fixings, render systems and joinery specified for salt-laden air
Watch #3
Party Wall notices and shallow roof voids typical of medieval Fore Street terraces in the PL12 district
Who this is for
Straight facts about working with us here
- Applications for Saltash are handled through Cornwall Council, with Liskeard the nearest planning office we deal with regularly.
- Designated-area work is routine here, so heritage and landscape statements are produced alongside the drawings rather than outsourced.
- Drawings, planning and building regulations are all produced in-house, so a extension enquiry does not get passed between firms.
Planning rules change and every site is different. For the final position on your address, check with Cornwall Council as the local planning authority or the Planning Portal.
What we focus on
Extensions considerations specific to Saltash.
01
Drainage on older Cornish properties is rarely on a clean modern map; CCTV survey before design is often money well spent.
02
Permitted development for rear extensions runs to four metres on a detached house, three on a semi or terrace — but Article 4 areas remove this in some parishes.
03
Extensions over a certain proportion of the original house trigger full Part L upgrade obligations to the existing building — worth knowing before brief is set.
04
Cornish granite and slate-hung walls react differently to new openings than modern brickwork — lintel choice and structural sequencing matter.
Quick check
Want a straight answer on whether your Saltash project is worth pursuing?
Send a few details — we'll come back within 1 working day with a plain-English view on planning risk, likely cost band and whether it's a project we'd take on.
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Get a free feasibility view
For projects in Saltash and the PL12 area.
Local context
Why Saltash is its own job.
In Saltash the planning picture is specific: conservation Area covers the historic Fore Street and waterfront. Tamar Bridge crossing and proximity to Plymouth shape edge-of-town residential growth significantly. For extension specifically, parts of Saltash sit within a designated Conservation Area, which means materials, fenestration and roof pitches all need to read sympathetically with the existing streetscape; coastal salt-laden air around Saltash drives detailing choices — fixings, render systems and timber treatments all need to be specified for exposure. That local reading is what makes a Saltash (PL12) project different from a generic Cornwall scheme — and is the whole reason we work this way. On post-war estates at Latchbrook and Pillmere in particular — the kind you'll also find toward Callington — the extension brief always has to read the existing fabric first.
Planning note
Most extensions in Cornwall are either permitted development or a straightforward householder application — but Conservation Area and AONB sites need a more careful design conversation upfront.
Our process
How a Saltash extension project runs.
Step 1
Brief
We meet on site, talk through how you live now and what's missing from the current layout.
Step 2
Design
Two or three sketch directions with rough budgets, then refinement of the chosen route.
Step 3
Approvals
Planning or Cert of Lawfulness, then a full building regs package.
Step 4
Build
Either through your own builder with our drawings, or as a full build by our team.
Step 5
Handover
Snag, certify, hand over the keys to your new space.
Typical single-storey rear extensions run twelve to twenty weeks on site; two-storey and wraparound projects sixteen to thirty weeks.
FAQs
Saltash Extensions — local questions answered.
- What about the Party Wall Act?
- If you share a wall with a neighbour or build close to a boundary, the Act applies. We flag it early, recommend a surveyor and keep the programme aligned with the notice period. In Saltash specifically, we'd start by checking the Conservation Area boundary before committing to a direction.
- How much does an extension cost in Cornwall?
- Build costs in Cornwall typically run from around £2,200 to £3,200 per square metre for a good-quality single-storey extension, more for kitchen-grade fit-out or complex glazing. We give a realistic budget before drawings start, not after.
- Can you handle the build as well as the design?
- Yes — that's the whole point of the studio. One contract, one point of contact, no finger-pointing between architect and builder when something needs a decision on site.
- We live in the house. Can a extension in Saltash be done while we stay put?
- Usually yes for single-storey and rear work, with a temporary kitchen or bathroom arrangement agreed before the start. Whole-house remodels and roof work in Saltash are often easier if you move out for a few weeks. We set that expectation at feasibility stage rather than halfway through.
- How long does the whole process take?
- Allow roughly three months for design and approvals, then twelve to twenty weeks on site for a typical single-storey extension. Wraparounds and two-storey add-ons take longer, mostly through approval and groundworks.
- Do I need planning permission for an extension?
- Often no — single-storey rear extensions, side extensions and modest two-storey additions can sit inside permitted development on a typical detached house. Conservation Areas, AONB and Article 4 zones remove some of those rights, so we always check the address first.
Saltash is the hub for these neighbourhoods
We run extensions across Saltash and the surrounding PL12 neighbourhoods — same studio, same site team.
- Hatt
PL12
- Landrake
PL12
- Tideford
PL12
- St Germans
PL12
- Pillaton
PL12
- Cargreen
PL12
- St Mellion
PL12
Keep reading
Where to go next from Saltash
Saltash works as a hub for us: the same extension team covers Hatt, Landrake, Tideford and the surrounding PL12 villages, so a site visit here often takes in more than one address.
Other services in Saltash
Nearby places we cover
Local neighbourhoods in Saltash
From initial feasibility to final handover, we manage extension projects across Saltash with careful attention to what makes East Cornwall unique. Applications are dealt with through Cornwall Council, with Liskeard the office we deal with most for PL12.
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