QA / structurePre-pour gate
One of the most expensive defect classes is discovering an error only after the structural element has been cast.
WHEN / Before every structural concrete pour
CHECKLIST / reinforcement to drawing · cover and spacers · penetrations · earthing · axes and levels · formwork cleanliness · pump/vibrator access
EVIDENCE / wide photos · penetration close-ups · site-manager record · concrete delivery note
QA / recordsHidden-works evidence
Every element that becomes inaccessible after the next trade should leave a traceable proof of execution.
WHEN / Before closing insulation, services, reinforcement and floor layers
CHECKLIST / wide photo · location reference · detail close-up · room/grid description · drawing revision
EVIDENCE / hidden-works album · link to task and drawing
EnvelopeExternal joinery acceptance
Window performance depends on support, fixing, seals and the insulation interface, not only the profile specification.
WHEN / Immediately after installation and before covering layers
CHECKLIST / plumb and level · fixings · threshold support · inside/outside seals · insulation continuity · hardware adjustment
EVIDENCE / installation report · layer photos · element IDs
DesignMEP coordination before construction
Service clashes with structure belong in the model and drawings, not under a hammer on site.
WHEN / Before technical design freeze and again before slabs
CHECKLIST / soil stacks · air intake/exhaust · ventilation ducts · distribution boards · cable routes · foundation/slab penetrations
EVIDENCE / coordination issue set · closed clash list
ManagementChange control
Every post-freeze change receives a cost delta, schedule delta and affected-system list.
WHEN / From design freeze through final acceptance
CHECKLIST / change description · reason · cost delta · time delta · affected drawings · affected contractors · approve/reject
EVIDENCE / decision record · updated baseline
ProcurementQuote normalisation
Compare scope to scope, never price to price.
WHEN / Every material package or trade contract
CHECKLIST / materials · labour · transport · plant · waste · warranty · lead time · payment · exclusions
EVIDENCE / bid matrix · selection rationale
FinanceCost baseline and contingency
The budget separates committed contracts, owner purchases, contingency and approved changes.
WHEN / Before site start and at every design revision
CHECKLIST / cost WBS · committed vs paid · forecast at completion · contingency · cash flow
EVIDENCE / versioned baseline · monthly forecast
Smart HomeSmart Home backbone
Automation is a layer over a robust electrical and controls design, never a substitute for basic house functionality.
WHEN / Electrical / controls technical design
CHECKLIST / technical rack · wired LAN · PoE · neutral conductors where required · spare cabling · UPS for critical services · manual mode
EVIDENCE / logical architecture · port plan · cable schedule
CommissioningWhole-house commissioning
Handover is not satisfied by equipment merely switching on; the integrated system must be measured under realistic conditions.
WHEN / Before move-in
CHECKLIST / ventilation measurements · heating curves · zones · DHW · noise · electrical tests · network · Smart Home failure scenes
EVIDENCE / commissioning report · settings baseline
RecordsHandover pack
Years later, the most valuable construction deliverable is knowing what is inside the walls and who is accountable for it.
WHEN / Final weeks of construction
CHECKLIST / as-built · test reports · warranties · manuals · serial numbers · contractor contacts · hidden-works photos · maintenance schedule
EVIDENCE / handover pack v1.0