Why clients switch

Impact, line by line, against a traditional contractor.

Name: Impact Construction
Address: London, GB
Telephone: 020 3870 9047
Price range: ££-£££

We've sat on both sides of the table. This is the honest delta — pricing, programme, change control, handover — that drives most of our enquiries.

01Pricing model
Impact
Open-book — every line item visible, every change priced before it's done.
Traditional
Lump-sum with sealed margins, then variation orders mid-job.
02Programme
Impact
Single PM owns the critical path end-to-end.
Traditional
Sub-contractors sequenced by a site manager who didn't price the job.
03Change control
Impact
Variations agreed in writing, costed inside 48 hours, signed before work starts.
Traditional
Verbal nods on site, invoiced at month-end with markup.
04Tenant / occupier impact
Impact
Phased works, out-of-hours where required, zero trading downtime targeted.
Traditional
Whole-floor shutdowns, dust egress, weekend overtime billed at premium.
05Handover
Impact
O&M manuals, as-built drawings, BIU certificates, 12-month defects line — day one.
Traditional
Snag list, then a six-week chase for paperwork.
06Communication
Impact
Weekly written progress note + WhatsApp for the client principal.
Traditional
Monthly site meeting; calls go to voicemail.
07Payment terms
Impact
Stage payments tied to verifiable milestones.
Traditional
Front-loaded valuations, retention disputes at PC.
08Defects period
Impact
12 months from PC, single point of contact, fix-first ethos.
Traditional
12 months from PC, sub-contractor finger-pointing.

Next step

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