Procurement & Contracts
Which contract forms and tender conventions apply in Wales?
Public estates frequently utilise NEC4 frameworks alongside JCT Standard/D&B forms in Cardiff, Swansea, Newport, and Wrexham.
Building Regulations (Wales) Approved Documents & Welsh SuDS SAB Mandatory Drainage Approval
Wales Construction Cost Planning & NRM2 Estimating
Estimating support across South and North Wales covering coastal civil works, residential extensions/new-builds, industrial sheds along the M4 corridor, and heritage stone refurbishments.
Weather & Technical Standards
What climate and fabric standards shape Wales takeoffs?
Mandatory Sustainable Drainage Approving Body (SAB) compliance in Wales directly shapes external sitework quantities—requiring quantified swales, permeable paving sub-bases, rainwater harvesting, and attenuation crates even on smaller residential developments.
Measurement & Deliverable Parameters
How are Wales building packages structured and audited?
| Estimating Parameter | Technical Specification | Standard / Audit Basis |
|---|---|---|
| Regulatory System | Building Regulations (Wales) Approved Documents & Welsh SuDS SAB Mandatory Drainage Approval | Applied to architectural & structural drawings across Wales |
| Procurement Formats | JCT Design & Build, Traditional, SBCC & NEC4 schedules | Structured to RICS NRM1 / NRM2 in m2, m3, m, kg, and nr |
| Waste & Prelim Split | 5%–10% typical trade waste isolated from net build items | Allows contractors in every UK county to verify merchant & labour rates |
| Workbook & Turnaround | 100% open-formula Excel + 24–48 hr target for small residential packages | Supports drawing uploads up to 25 MB via encrypted quote portal |
Calibration note: 1:50 and 1:100 architectural and structural drawings are scaled to 25 mm masonry tolerances and 100 mm thermal zones, isolating 5 percent to 10 percent wastage from net quantities.
Which regions are covered in Wales?
Counties in Wales
Popular Estimating Trades for Wales
Construction EstimatingNRM2 Full Work Sections 1–41Sitework EstimatingNRM2 Sections 33–36 (Roads, Drainage & Utilities)Roofing EstimatingNRM2 Sections 17–18 (Sheet & Tile/Slate Roofing)Concrete EstimatingNRM2 Section 11 (In-Situ & Precast Concrete)Residential EstimatingNRM1 / NRM2 Housing ElementsMasonry EstimatingNRM2 Section 14 (Masonry)
Wales Estimating FAQs
Do Welsh external sitework takeoffs capture mandatory SuDS SAB drainage elements?
Yes. Geocellular attenuation crates, permeable Type 3 aggregate layers, inspection silt chambers, swales, and headwalls shown on SuDS drawings are itemised completely.
Can you measure Welsh natural slate and traditional lime-mortar stone masonry?
Yes. Pennant stone, lime pointing, Lead Code 5/6 valley gutters, and natural Welsh slate laps are all tracked on dedicated trade lines.