Domestic Conversions and Extensions
Structural design for lofts, extensions and refurbishments, ensuring safe, efficient and compliant alterations to existing homes.
buildable, compliant, and clear.
From concept to calculations to construction drawings, we help homeowners, builders and architects move projects forward with confidence.
Clear calculations, buildable details, and compliant documentation for residential and light commercial projects.
Structural design for lofts, extensions and refurbishments, ensuring safe, efficient and compliant alterations to existing homes.
Structural schemes and load assessments for new-build or refurbished warehouse facilities, optimised for racking, mezzanines and industrial use.
Support structure design, fixing details and load assessments for rainscreen, composite and bespoke cladding systems.
Full RC frame design including slabs, beams, columns and foundations, delivering robust and buildable solutions for multi-storey developments.
GA drawings, connection details, fabrication drawings and bolt schedules ready for workshop.
Tailored structural solutions for unique, complex or non-standard schemes requiring bespoke engineering input.
A glimpse of recent calculations, drawings and built outcomes.




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



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




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





Lateral bracing and base plate upgrades to an existing portal frame.
Moment and simple connections with shop-ready drawings and bolt lists.
Compound beam with point loads, web stiffeners and vibration control.
A straightforward process that keeps your project moving — clear drawings, robust calculations, and support through Building Control and on-site queries.
We coordinate closely with your architect and contractor, and provide responsive support so decisions don't stall on site.
Concise marked-up plans and notes that reduce site queries — dimensions and fixings where they matter.
Verified load paths, serviceability checks, and documentation aligned with current standards and Building Control expectations.
Proposals typically within 12 hours. Phased deliverables available to keep your programme moving.
We coordinate with your architect and contractor to avoid clashes, and respond quickly to Building Control or contractor questions.
Homeowners, builders and architects on recent collaborations.
A simple three-step process to get accurate beam calculations for your project.
Share your project details
To size and check the structure accurately, we'll need some basic information about your project.
This usually includes:
Review & fixed-price quote
Send everything over to info@structurewise.net
Once we've reviewed your information, we'll:
There's no obligation to proceed — we only move forward once you're happy.
Calculations & certification
After instruction, we'll prepare your structural calculations and supporting drawings.
You'll receive:
Once issued, the calculations can be submitted directly to Building Control or shared with your builder.
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.
Fixed-fee packages for common home layouts (no site visit).
Double beam, 3 lintels, ground floor design, masonry check, roof design
3 single beams, flat roof design, floor joists, masonry check, strip foundation check
Double beam, column, pad foundation, connection design, fabrication drawings
Rafter, purlin, ridge, ceiling tie, hips, collar ties
Double beam, 4 lintels, 2 roof timbers, strip foundation, masonry check, 2 floor joists
For straightforward single calculations.
Share drawings or a brief and we'll return a fixed-fee proposal with scope and timeline. Typically replies within 12 hours (Mon - Fri).