Mid Cornwall · TR2 · Cornwall Council Mid
Probus structural calculations — a Mid Cornwall studio
Whenever a wall comes out, a roof is opened up or a new opening is formed, building control will want calculations showing that what is left holds up what is above it. We coordinate that work alongside the drawings so the beam on the calculation sheet is the beam on the drawing. In Probus, that work is shaped by the place itself — Probus is a substantial inland village between Truro and St Austell, with the tallest church tower in Cornwall and a Conservation Area covering the village centre, with a building stock that leans toward post-war estates and modern Persimmon-style estates.
Probus sits in Mid Cornwall — just off the A390; covering TR2 from Grampound, Ladock, Tresillian outward.
- Conservation Area
- Rural / open-countryside policy area
- ✓30+ years of Cornwall Council approvals
- ✓Conservation Area experience built into the fee
- ✓Plain-English feasibility before any drawings
- ✓Fixed-fee planning packages, no surprise invoices
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Tell us about your structural calculations. We reply within 1 working day — no obligation.
Page purpose
What you actually get on a Probus structural calculations drawings package
This is a drawings-led service. You are buying a documented, submission-ready set for a TR2 address, not a build contract. For most Probus householders that means a measured survey, an honest feasibility view, then the drawings the council and your builder both need.
- Measured survey and existing drawings before any proposal is drawn
- A written planning route for the TR2 address, including whether permitted development is realistically available
- Proposed plans, elevations and site plan at the scales the authority expects
- Submission and validation handling, plus responses to officer queries
Scope
What we can draw, survey and build around Probus
Not every project needs every stage. On a Probus job we scope to what the site and the consent route actually require.
Heritage and design statements
Written justification where designation makes the design case as important as the drawing.
Planning application drawings
Existing and proposed plans, elevations, site and block plans drawn to validation standard.
Construction and technical drawings
1:10 and 1:20 details for the parts of the job builders normally have to guess at.
Measured survey
An accurate record of what is actually there, which is where most avoidable cost is removed.
Building regulation drawings
Full Plans sets with sections, construction notes and coordinated structural information.
Local watch-list
Local snags worth knowing before drawing a Probus structural calculations.
Watch #1
Conservation Area controls on materials, window proportions and roof form through central Probus
Watch #2
Local Plan tests on isolated dwellings, plus lane access for plant and deliveries around Probus
Watch #3
Party Wall notices and shallow roof voids typical of traditional cob and granite cottages in the TR2 district
Who this is for
Why this page exists, and who it is for
- Drawings, planning and building regulations are all produced in-house, so a structural calculations enquiry does not get passed between firms.
- Designated-area work is routine here, so heritage and landscape statements are produced alongside the drawings rather than outsourced.
- Applications for Probus are handled through Cornwall Council, with St Austell the nearest planning office we deal with regularly.
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
Structural Calculations considerations specific to Probus.
01
Cornish rubble stone walls behave differently to brick or block, and load paths through them have to be considered rather than assumed.
02
Exposed sites carry higher wind loading, which affects roof fixings, gable restraint and large areas of glazing.
03
Ground conditions vary sharply across Cornwall, from granite close to the surface to soft made ground near estuaries, and foundation design follows the ground, not the pattern book.
04
Where a party wall is affected, structural information is also what the neighbour's surveyor will ask to see.
Quick check
Want a straight answer on whether your Probus 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 Probus and the TR2 area.
Local context
Why Probus is its own job.
The planning backdrop in Mid Cornwall is real, not abstract: conservation Area covers the village core including the church. Tregothnan Estate (the largest private estate in Cornwall) lies to the south and shapes some adjacent applications. For structural calculations specifically, parts of Probus sit within a designated Conservation Area, which means materials, fenestration and roof pitches all need to read sympathetically with the existing streetscape; Cornwall Council's Local Plan applies tighter tests to isolated rural dwellings here, so design rationale and policy fit need to be set out clearly from the outset. Treat the TR2 parish brief as the design brief and the Probus application has somewhere to land. Whether the project is on post-war estates in the centre or further out toward Grampound, the structural calculations response is locally tuned. Where a property sits inside a conservation area or is listed, the assessment tends to turn on materials, window detailing and how visible the change is from the street rather than floor area alone. Cornwall Council's conservation team, or the Planning Portal, is the right place to confirm what applies to a specific address. Granite and cob walls do not behave like modern cavity construction. Breathability, damp movement and structural openings all need drawing properly, and building control will want that shown rather than assumed.
Planning note
Structural work does not usually need planning permission in itself, but a beam depth can change a ceiling line, and a changed ceiling line can change an approved elevation.
Our process
How a Probus structural calculations project runs.
Step 1
Establish the structure
A survey records what is load bearing, what spans where and what sits above.
Step 2
Brief the engineer
Drawings and loading assumptions are issued so calculations are done against real geometry.
Step 3
Calculate
Beams, bearings, foundations and stability are sized and checked.
Step 4
Coordinate onto drawings
Sizes and details come back onto the construction package.
Step 5
Submit and build
Building control receives one coordinated set and the builder installs what was calculated.
Work ranges from a single beam over a knocked through kitchen to a full structural scheme for a new build or a barn conversion.
FAQs
Probus Structural Calculations — local questions answered.
- Who carries out the calculations?
- They are produced by a qualified structural engineer, and we coordinate the information, the drawings and the submission so you are not managing two separate appointments. In Probus specifically, we'd start by checking the Conservation Area boundary before committing to a direction.
- Can you do calculations for someone else's drawings?
- Yes, provided the drawings are accurate enough to work from. Where they are not, a measured survey check comes first.
- We live in the house. Can a structural calculations in Probus 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 Probus are often easier if you move out for a few weeks. We set that expectation at feasibility stage rather than halfway through.
- How long do calculations take?
- For a straightforward beam over a removed wall it is usually a short turnaround once the survey information is in. Foundations, unusual spans and heavily loaded stone walls take longer because the checks are more involved.
- Will a steel beam always be needed?
- Not always. Engineered timber can work well on shorter spans and is easier to install in a tight Cornish cottage, so the material choice follows the span, the loading and how the beam gets into the building.
- Are calculations included in a building regulation package?
- They are coordinated with it. We arrange the structural work and bring the results onto the drawings so building control receives one consistent set rather than two documents that disagree.
Keep reading
Follow the chain: survey, drawings, build
We cover Probus and the wider TR2 district directly. Structural Calculations enquiries here are common enough that we know the constraints before the first visit.
Other services in Probus
Nearby places we cover
From initial feasibility to final handover, we manage structural calculations projects across Probus with careful attention to what makes Mid Cornwall unique. Here that means the Conservation Area boundary decides the route before the design does.
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