Structurewise Logo
Structural steel framework during construction
Chartered structural engineer Building Control-ready designs

Residential structural design for extensions, lofts and renovations —

buildable, compliant, and clear.

From concept to calculations to construction drawings, we help homeowners, builders and architects move projects forward with confidence.

250+
Projects delivered
12yrs
Experience
12hr
Typical response
Structural designs Construction site Steel beams Timber work construction

Services

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Clear calculations, buildable details, and compliant documentation for residential and light commercial projects.

Loft conversion with exposed beams

Domestic Conversions and Extensions

Structural design for lofts, extensions and refurbishments, ensuring safe, efficient and compliant alterations to existing homes.

Plans Calculations Details
Warehouse structural design

Warehouse

Structural schemes and load assessments for new-build or refurbished warehouse facilities, optimised for racking, mezzanines and industrial use.

Racking Mezzanines Load Assessments
Cladding design

Cladding Design

Support structure design, fixing details and load assessments for rainscreen, composite and bespoke cladding systems.

Rainscreen Composite Fixing
Reinforced concrete frame

Reinforced Concrete Framed Structures

Full RC frame design including slabs, beams, columns and foundations, delivering robust and buildable solutions for multi-storey developments.

Slabs Beams Columns
Steel Detailing

Steel Detailing

GA drawings, connection details, fabrication drawings and bolt schedules ready for workshop.

Drawings Connections Fabrication
Special Projects

Special Projects

Tailored structural solutions for unique, complex or non-standard schemes requiring bespoke engineering input.

Bespoke Complex Engineering

Selected projects

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A glimpse of recent calculations, drawings and built outcomes.

Brooklands Road, St HelensBrooklands Road, St HelensBrooklands Road, St HelensBrooklands Road, St HelensBrooklands Road, St Helens
1 / 5

Brooklands Road, St Helens

Universal beam design, padstones, and connection plates with deflection checks.

Elgin StreetElgin StreetElgin StreetElgin Street
1 / 4

Elgin Street

Racking panels and hold-downs for a new two-storey extension.

Hiresafe WarehouseHiresafe WarehouseHiresafe WarehouseHiresafe WarehouseHiresafe Warehouse
1 / 5

Hiresafe Warehouse

Cantilever wall with hydrostatic pressure, crack control and waterproofing details.

Forth StreetForth StreetForth StreetForth StreetForth StreetForth Street
1 / 6

Forth Street

Lateral bracing and base plate upgrades to an existing portal frame.

Connection Package

Connection Package

Moment and simple connections with shop-ready drawings and bolt lists.

Open-Plan Beam

Open-Plan Beam

Compound beam with point loads, web stiffeners and vibration control.

What to expect

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A straightforward process that keeps your project moving — clear drawings, robust calculations, and support through Building Control and on-site queries.

Collaborative delivery

We coordinate closely with your architect and contractor, and provide responsive support so decisions don't stall on site.

Clear scope & fixed fees Building Control-ready Site-friendly details
Simple process
  1. Review drawings/photos and confirm scope.
  2. Fixed-fee proposal (typically within 12 hours).
  3. Deliver calculations + marked-up drawings.
  4. Support through Building Control queries.

Clear drawings

Concise marked-up plans and notes that reduce site queries — dimensions and fixings where they matter.

Robust calculations

Verified load paths, serviceability checks, and documentation aligned with current standards and Building Control expectations.

Fast response

Proposals typically within 12 hours. Phased deliverables available to keep your programme moving.

Coordination & support

We coordinate with your architect and contractor to avoid clashes, and respond quickly to Building Control or contractor questions.

Have drawings ready? Send them over and we'll confirm the right scope and fee.
Contact us →

What clients say

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Homeowners, builders and architects on recent collaborations.

How to Order Beam Calculations

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A simple three-step process to get accurate beam calculations for your project.

blueprint

Step 1

Share your project details

To size and check the structure accurately, we'll need some basic information about your project.

This usually includes:

  • Property address
  • Photos of the existing structure
  • Sketches, marked-up plans, or estate agent drawings
  • Existing and proposed layouts
  • Dimensions, wall types, floor/roof construction
  • A short description of the works you're planning
  • If you're working with an architect or designer, Building Control drawings (PDF or CAD) are ideal
send email

Step 2

Review & fixed-price quote

Send everything over to info@structurewise.net

Once we've reviewed your information, we'll:

  • Confirm the scope of works
  • Provide a clear, fixed-price quotation
  • Advise if any additional details are required

There's no obligation to proceed — we only move forward once you're happy.

calculations

Step 3

Calculations & certification

After instruction, we'll prepare your structural calculations and supporting drawings.

You'll receive:

  • A clear, Building Control-ready calculations pack
  • Supporting sketches where required
  • An invoice and confirmation of professional indemnity cover

Once issued, the calculations can be submitted directly to Building Control or shared with your builder.

Price list

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Transparent, fixed fees for common residential structural items and typical packages. All prices exclude VAT.

Complex layouts or specialist items may need a bespoke quote — please get in touch.

Included: calculations + clear marked-up plan / sketch
Turnaround: typically 3–7 working days
To quote: send drawings/photos + key dimensions

Typical packages

Fixed-fee packages for common home layouts (no site visit).

Most popular

Typical ground floor rear extension

Double beam, 3 lintels, ground floor design, masonry check, roof design

£350

Dormer conversion

3 single beams, flat roof design, floor joists, masonry check, strip foundation check

£480

Goalpost

Double beam, column, pad foundation, connection design, fabrication drawings

£495

New roof design

Rafter, purlin, ridge, ceiling tie, hips, collar ties

£560

Double storey side extension

Double beam, 4 lintels, 2 roof timbers, strip foundation, masonry check, 2 floor joists

£640
Not sure what applies to your project? Send your plans and we'll confirm the right scope and fee. Typically replies within 12 hours.
Request a fixed-fee proposal

Individual items

For straightforward single calculations.

  • Single beam £60
  • Bespoke lintel beam £100
  • Double beam £110
  • Column £115
  • Strip foundation design/check £70
  • Timber floor joist (per span) £40
  • Timber roof joist (per span) £80
  • Connection design £50
  • Lintel £30
  • Pad foundation £70
  • Structural / fabrication drawings £150
  • Masonry checks £70
  • Ground slab / beam & block layout £70
  • Site visit (project dependent) £150

Tell me about your project

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Share drawings or a brief and we'll return a fixed-fee proposal with scope and timeline. Typically replies within 12 hours (Mon - Fri).

Based in
North West England, UK • Remote-friendly
What happens next
  1. We review your drawings (or photos/sketch) and clarify any gaps.
  2. You receive a fixed-fee proposal with scope, deliverables and timeline.
  3. We deliver calculations + marked-up drawings ready for Building Control.
Typical deliverables
  • PDF drawings and marked-up plans
  • Calculation package for Building Control
  • DWG exports on request

Contact form

To price quickly, include:
  • Drawings (PDF) or photos/sketches
  • Approx. sizes/spans (if known)
  • Your timeline (e.g. “starting in March”)

PDF/JPG/PNG. If files are large, email them instead.

Typically replies within 12 hours (Mon - Fri).

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