Meet C.A.L.C.
The STRUCTURA Construction Analytics & Logistics Computer
At STRUCTURA, we don't believe in guesswork, back-of-the-napkin math, or pulling quotes out of thin air. That is exactly why we powered up C.A.L.C. Sure, he might look like he rolled straight out of a 1980s secret laboratory, but underneath that retro chassis is a highly advanced estimating matrix dialed directly into the current North West construction market. C.A.L.C. doesn't do "builder faff" and he doesn't do hidden fees—he just processes cold, hard, realistic data.
Whether you are dreaming of a single-storey extension or a full house refurbishment, C.A.L.C. is standing by. Feed him your project dimensions, select your finish quality, and let him crunch the numbers to give you a true, no-nonsense ballpark estimate before you even pick up the phone.
© 2026 STRUCTURA Project Services Limited. All Rights Reserved. APEX™ and C.A.L.C.™ are proprietary trademarks.
The C.A.L.C. Mainframe
Construction Analytics & Logistics Computer
SYSTEM ONLINE. Welcome to the STRUCTURA estimating mainframe. C.A.L.C. is our proprietary, data-driven pricing droid, dialed directly into current North West construction rates. He doesn't do guesswork, and he doesn't do hidden fees.
How to use C.A.L.C: Do not rely on back-of-the-napkin math. To get a realistic, no-faff ballpark estimate for your project, simply boot up the relevant C.A.L.C. module below. Feed him your dimensions, select your parameters, and let him process the reality of your budget—including the mandatory 20% VAT and structural contingencies.
Select your required data module below to begin.
C.A.L.C. Extension Estimator
C.A.L.C. (Construction Analytics & Logistics Computer)
SYSTEM ONLINE: Feed your project dimensions to C.A.L.C. to compute a realistic, Tier-1 North West construction estimate. No faff, just data.
C.A.L.C. Roofing Estimator
C.A.L.C. MODULE: ROOFING WORKS
MODULE LOADED: Calculate the cost of premium flat roof systems (GRP/EPDM) or traditional pitched roof replacements.
C.A.L.C. Structural Alterations Estimator
C.A.L.C. MODULE: STRUCTURAL ALTERATIONS
MODULE LOADED: Calculate the costs of removing load-bearing walls, installing RSJ steel beams, and making good.
C.A.L.C. Commercial Strip Out Estimator
C.A.L.C. MODULE: COMMERCIAL STRIP-OUT
MODULE LOADED (B2B): Calculate the estimated cost to strip a commercial unit back to a standard Landlord 'Cat A' blank canvas.
C.A.L.C. Groundworks & Landscaping Estimator
C.A.L.C. MODULE: GROUNDWORKS & EXTERIOR
MODULE LOADED: Calculate the realistic costs of driveways, porcelain patios, and heavy site clearance.
C.A.L.C. Commercial to Residential Conversion Estimator
C.A.L.C. MODULE: COMM TO RESI CONVERSION
DEVELOPER MODE LOADED: Calculate the costs of converting commercial units into domestic apartments. Note: Qualifying conversions benefit from the reduced 5% UK VAT rate.
C.A.L.C. Joinery & Carpentry Estimator
C.A.L.C. MODULE: JOINERY & CARPENTRY
MODULE LOADED: Calculate the costs of 1st and 2nd fix carpentry, from structural timber and roof pitching to premium internal doors and kitchen installations.
C.A.L.C. Plumbing & Heating Estimator
C.A.L.C. MODULE: PLUMBING & HEATING
MODULE LOADED: Calculate the costs of 1st and 2nd fix plumbing, boiler upgrades, underfloor heating, and wet-room installations.
C.A.L.C. Decorating & Finishes Estimator
C.A.L.C. MODULE: DECORATING & FINISHES
MODULE LOADED: Calculate the costs of professional painting, feature wallpapering, woodwork finishing, and premium acoustic slat wall installations.
C.A.L.C. Electrical Diagnostic Estimator
C.A.L.C. INFRASTRUCTURE ENGINE
PROTOCOL: We do not just run wires; we build digital and physical infrastructure. Select your project parameters below to calculate a Tier-1 estimate for Power, Data, Security, and legal Certification.
SYSTEM DIAGNOSTIC TOTALS
Calculations are generated via the proprietary APEX algorithm. Unauthorised reproduction or reverse-engineering is strictly prohibited under the C.A.L.C. Protocol.
C.A.L.C.s' COWBOY CRUSHER
For when you're bored of Adulting :D
COWBOY CRUSHER
Tap left/right sides of the screen to move, or use arrow keys.
Keep your eyes peeled for Flappy C.A.L.C. The Steel Beam Dodge!
Submit your score, if you want...
C.A.L.C.'s Hall Of Fame
Wowwww... Now this is something to tell the Grandkids about... Well done champ?
Mr C.A.L.C. ULOUS
Cowboy Crusher PB = 2860
Flappy C.A.L.C PB = 234
SPS001GH
Cowboy Crusher PB = 750
themilkman
Cowboy Crusher PB = 980
Flappy C.A.L.C. PB = 53
Big D
Cowboy Crusher PB = 1300
If the PB Champion happens to be a member of The STRUCTURA Team or one of our Vetted Trade Partners, the winner will be provided an unhealthy amount of FREE liquid courage at the next STRUCTURA Liquid Merriment Event.
Got a Question?
Head over to our FAQ's & Contact Hub to see questions and discussions from members of the public and other STRUCTURA clients. Alternatively, you can contact one of our awesome team.