HammerTech lists permit workflows, equipment and plant management, inspections, and optional IronGate facial-recognition turnstiles. Site Control provides UK CDM document generation (RAMS, CPP, COSHH; HammerTech lists US-style JHAs), RFIs, document-review evidence and published per-site pricing. Site Control does not provide biometrics, turnstiles, CIS payroll, GPS geofence, plant management or scheduling.
HammerTech's breadth, permit depth and turnstile hardware serve large multi-site GCs, while Site Control provides UK-CDM document generation and published per-site pricing for builders who need RAMS/CPP/COSHH.
Figures and feature claims are from HammerTech's pricing, platform, access-control and integration pages re-checked 2026-10-05; HammerTech pricing is quote-only with no public figures, and Site Control pricing reflects The Site Book's published From-£675/site framing.
From £675/site per month plus £5,000 one-off setup; volume tiers as sites scale
Quote-only flat subscription scaled by annual construction volume and active job sites; no per-user fee, unlimited users, subcontractors free, implementation and support bundled.
Team size
Per active site with unlimited workers (~75+ typical), multiple contractor companies and assigned-site Site Supervisor logins inherited from Business
Enterprise GC safety, operations and EHS teams managing many concurrent projects and large subcontractor pools.
Best for
Principal contractors and builders running live sites with subcontractors who need UK CDM documents generated plus on-site contractor access, attendance, RFIs and audit-ready evidence in one per-site tool.
Mid-to-large general contractors running multiple job sites who want one mature EHS and site-operations platform with optional turnstiles and equipment management.
Not ideal for
No biometric turnstiles or physical access control, so it cannot secure a Tier-1 perimeter the way hardware-led platforms like MSite can.
Runs US-style JHAs, Safety Plans and SDS and does not generate UK RAMS, CPP or COSHH documents, so UK CDM packs still need a separate tool.
RAMS / CPP / COSHH generation
Generates UK RAMS, CPP, COSHH and method statements from the project brief.
Stores and distributes safety documents and runs US-style JHAs, Safety Plans and SDS; it does not generate UK RAMS, CPP or COSHH documents.
RAMS
AI-generated, site-specific and editable in-browser on every The Site Book plan; inherited by Site Control.
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CPP
Full Construction Phase Plans, not just RAMS.
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COSHH
Standalone COSHH document, site-specific substance register and safety-data-sheet upload with extraction.
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Method statements
Built-in trade task library plus your own reusable work types and method steps.
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PCPP import
Upload an existing pre-construction plan and reuse its structure.
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Document review
Review status and history, optional named-approver routing before issue, and client approve/request-changes via share links.
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Document checking
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Site diary
Editable daily entries; owner/admin deletion is permanent, while a Site Supervisor's deletion is retained for owner/admin restore. Live entries and photo counts appear in the Audit Pack.
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Site files
Drawings, plans, H&S docs, procedures, RAMS, CPP and emergency information.
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Site portal
Workers get their own link to the documents and information for the sites they are on.
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Subcontractor tracking
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Subcontractor evidence
Evidence record, review and archive workflow against the project.
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Corrective actions
Owner, due date and completion state against each inspection finding.
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Data export
Includes the Audit Pack: one merged PDF with documents, sign-offs, worker evidence, attendance, incidents, COSHH, permits and up to the latest 500 live Site Diary entries.
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AI chat
In-app assistant answering from the published Help Centre articles.
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Permits to work
Dedicated Permits module within the Coordinate workflow; permit depth is a recognised HammerTech strength.
Site inductions
Digital induction blocks check-in until acknowledged - readable in 9 worker languages.
Orientations and worker onboarding module gates worker readiness before site access.
Multilingual inductions (9 languages)
Workers read and acknowledge key H&S details in 9 languages at the entrance QR; the language used is recorded in the audit trail and translations are site-team reviewable.
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RAMS sign-off (per worker)
Per-worker RAMS acknowledgement can block check-in until the current version is signed. Optional 4-digit PINs add evidence to shared-link document sign-off without changing attendance.
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Worker cert tracking
CSCS upload, internal review and expiry notifications.
Worker info, qualifications and orientation tracking with expiry handling as part of subcontractor management.
Right to work
Records Home Office share-code checks with outcome, expiry and an evidence file (manual verification, not a live API).
Captures worker credentials and onboarding data; UK right-to-work share-code verification is not a documented native feature.
Contractor self-onboarding
Contractor self-join via the entrance QR with CSCS upload and approval.
Subcontractor management lets sub firms self-complete onboarding; subcontractor access is free.
QR / mobile sign-in
Permanent entrance QR for guest sign-in/out and contractor self-join.
IronGate access supports QR codes and pin codes alongside facial recognition; mobile app handles field sign-in.
GPS clock-in
Attendance is captured via turnstiles and app; geofenced GPS clock-in is not a documented core feature.
Biometric access
IronGate partner turnstiles provide facial-recognition biometric access.
Physical access control
IronGate facial-recognition turnstiles and gates engineered for harsh construction conditions.
Site attendance
Check-in/out, history and a live people-on-site view.
Site Access plus IronGate sync labour hours and attendance in real time.
CIS payroll
Captures labour hours but no documented UK CIS timesheet-to-pay payroll module.
Live people-on-site
Triggered evacuation + muster roll-call: snapshot who is on site, mark each person safe, export a roll-call PDF.
Turnstile and access data give real-time who-is-onsite visibility for muster and evacuation.
Multi-company isolation
Each contractor company sees only its own workforce — test-verified.
Built around GC-managed projects with free subcontractor access; per-company data isolation is implied by role model but not publicly test-verified.
RFIs
Create, attach, comment, answer and close.
Focused on EHS and site operations; no request-for-information workflow documented on the platform pages.
Document-review evidence
Version-specific read/acknowledge audit chain.
Bulletins and safety meetings capture acknowledgements; a version-specific document-review audit chain is not explicitly documented.
Handover sign-off
Per-plot, per-trade hand-over sign-off is captured in person on one phone; a certified PDF is emailed to the developer and contractor, with a per-plot progress board.
Toolbox talks
Safety Meetings and Bulletins modules cover broadcast toolbox talks and acknowledgement.
Site inspections
Mature Inspections module within the Report workflow; inspections maturity is a HammerTech strength.
Incident log
Incidents and Injuries module for reporting, tracking and investigation.
Plant / asset management
Business and Site Control include spreadsheet import, project assignments, configured evidence, inspections, defects, quarantine, exports and Audit Pack history.
Equipment Compliance module covers plant and equipment registers, operator checks, servicing alerts and pre-start inspections.
Workforce scheduling
Logistics schedules site deliveries, crane lifts and work zones; no workforce shift or dispatch roster is advertised.
Multi-site dashboard & exports
Attendance CSV, monthly H&S CSV/PDF and project audit-log exports.
Reporting and Insights real-time analytics dashboard spans multiple job sites with exportable data.
Mobile app
No native app required; workers scan the entrance QR and use the browser on their own phone.
Native iOS and Android apps linked from the platform pages for field use.
Offline mode
Mobile app is used in the field; offline capability is plausible but not explicitly documented on public pages.
Single sign-on (SSO)
SAML single sign-on with Okta or Microsoft Entra; can be required across your company email domain.
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Public API
Read-only REST API with scoped account keys, rate limiting and an OpenAPI 3.1 spec (projects, documents, workers, certifications, attendance).
Open API for custom integrations, plus built maintained connectors to Procore and Autodesk.
Outbound webhooks
Signed real-time webhooks — documents generated/signed, certificates expiring, workers checking in — with retries and a delivery log.
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Reading this table: a tick means supported, a dash means partly supported, and a cross means we checked and it is not supported. An em dash (—) means we have not verified that capability for that product either way — treat it as unknown, not as a missing feature, and check with the vendor.
Who each tool is for
At-a-glance fit per product - pulled from the same data that drives the snapshot table.
The Site Book Site Control
Best for
Principal contractors and builders running live sites with subcontractors who need UK CDM documents generated plus on-site contractor access, attendance, RFIs and audit-ready evidence in one per-site tool.
Not ideal for
No biometric turnstiles or physical access control, so it cannot secure a Tier-1 perimeter the way hardware-led platforms like MSite can.
Team size
Per active site with unlimited workers (~75+ typical), multiple contractor companies and assigned-site Site Supervisor logins inherited from Business
HammerTech
Best for
Mid-to-large general contractors running multiple job sites who want one mature EHS and site-operations platform with optional turnstiles and equipment management.
Not ideal for
Runs US-style JHAs, Safety Plans and SDS and does not generate UK RAMS, CPP or COSHH documents, so UK CDM packs still need a separate tool.
Team size
Enterprise GC safety, operations and EHS teams managing many concurrent projects and large subcontractor pools.
The bottom line
Pick the option that matches how your team actually works.
Small UK builders and sole traders needing CDM packs
Site Control includes RAMS, CPP and COSHH generation with per-site pricing and no site hardware. HammerTech lists a quote-led enterprise offering and US-style JHAs. Compare the documents, integrations and site workflows each product covers.
Mid-size GCs wanting one UK site-operations platform
Toss-up: choose Site Control for UK CDM generation, assigned-site supervisors, optional PIN evidence for shared-link document sign-off, diary-backed Audit Packs, RFIs and per-site clarity; choose HammerTech if you need deep permits, equipment management and inspection maturity in one tool.
Large multi-site contractors needing turnstiles and plant
HammerTech lists IronGate facial-recognition turnstiles and equipment management. Site Control provides UK CDM document generation. For a multi-site estate, compare physical access, plant controls and UK CDM documentation.
Full breakdown per product
Strengths, weaknesses, fit, and the sources every claim came from.
From £675/site per month plus £5,000 one-off setup; volume tiers as sites scale
Best for
Principal contractors and builders running live sites with subcontractors who need UK CDM documents generated plus on-site contractor access, attendance, RFIs and audit-ready evidence in one per-site tool.
Team size
Per active site with unlimited workers (~75+ typical), multiple contractor companies and assigned-site Site Supervisor logins inherited from Business
Sweet spot
A principal contractor running one or more active sites who must generate the CDM pack, control who is inducted and on site, run RFIs, and produce audit-ready attendance and H&S exports without hardware.
Strengths
Generates UK RAMS, CPP, COSHH and method statements, and captures worker sign-off on site.
Per-site pricing with unlimited workers (~75+) and test-verified multi-contractor-company data isolation, instead of per-seat or per-turnstile economics.
No hardware: a permanent entrance QR plus browser sign-in on the worker's phone means a new site needs no turnstile capex or install.
Combines RFIs, document-review evidence, CSCS and induction gating, attendance and audit-grade exports in one tool — plus SSO (Okta / Microsoft Entra), a scoped REST API and signed webhooks for enterprise IT.
Plot-by-plot hand-over sign-off: capture every trade signed off on every plot in person, with a certified PDF and a live progress board.
The Audit Pack can include per-worker RAMS sign-off (with check-in blocked until the current method statement is signed), right-to-work evidence with expiry, and a triggered evacuation roll-call PDF.
Weaknesses
No biometric turnstiles or physical access control, so it cannot secure a Tier-1 perimeter the way hardware-led platforms like MSite can.
No CIS payroll or GPS-geofenced clock-in, so payroll-accuracy-led buyers may prefer Chime or Donseed.
No plant or workforce scheduling, dispatch or telematics — the Plant register is evidence-led rather than a fleet operations suite.
Site Control is a newer plan, introduced in 2026, for principal contractors managing site access and compliance workflows.
Check the product detail
These maintained Help Centre guides show exactly how the controls behind this comparison work.
Quote-only flat subscription scaled by annual construction volume and active job sites; no per-user fee, unlimited users, subcontractors free, implementation and support bundled.
Best for
Mid-to-large general contractors running multiple job sites who want one mature EHS and site-operations platform with optional turnstiles and equipment management.
Team size
Enterprise GC safety, operations and EHS teams managing many concurrent projects and large subcontractor pools.
Sweet spot
Multi-site GCs in the US/AU/UK that prioritise breadth of safety modules, permit depth and access-control hardware over UK-CDM document generation or a self-serve per-site product.
Strengths
Most feature-complete rival in this comparison set: deep permits, mature inspections, incidents and equipment/plant management in one platform.
Optional IronGate facial-recognition turnstiles and gates provide physical access control through installed hardware.
No per-user fee with unlimited users and free subcontractor access, plus implementation, training and support bundled into the subscription.
Long track record across the US, Australia and UK with mid-to-large general contractors and enterprise EHS teams.
Weaknesses
Runs US-style JHAs, Safety Plans and SDS and does not generate UK RAMS, CPP or COSHH documents, so UK CDM packs still need a separate tool.
Pricing is quote-only, with the annual fee based on construction volume and active job sites; buyers need a sales quote to compare their costs.
No request-for-information (RFI) workflow, which collaboration-heavy site teams may expect.
Breadth and enterprise onboarding are aimed at larger contractors. A buyer considering one UK site can compare its required workflows with the platform's modules and quoted scope.
Short, straight answers - the same questions real builders ask.
Does HammerTech generate UK RAMS, CPP and COSHH documents?
No. HammerTech stores and distributes safety documents and runs US-style JHAs, Safety Plans and SDS rather than generating UK CDM paperwork. The Site Book Site Control is built UK-CDM-first and actively generates RAMS, CPP, COSHH and method statements, so UK contractors get audit-ready compliance packs without a separate document tool. If UK CDM generation is the priority, Site Control closes a gap HammerTech leaves open for British sites.
How much does HammerTech cost compared with Site Control?
HammerTech is quote-only: a flat subscription scaled by annual construction volume and active job sites, with no per-user fee and free subcontractor access. No public figures are published. Site Control is transparent at £5,000 one-off setup plus £675 per active site per month, with volume tiers. If you want a budgetable, self-serve per-site number, Site Control is clearer; HammerTech needs a sales conversation.
Which platform has more safety and operations features?
HammerTech is the more feature-complete platform here, with deep permits, mature inspections, incidents, equipment and plant management, plus optional turnstiles. Site Control is lighter and focused on UK CDM workflows: document generation, inductions with gating, attendance, RFIs and document-review evidence. HammerTech includes broad safety modules for large estates; Site Control focuses on UK-specific compliance and per-site access workflows.
Does HammerTech offer turnstiles or biometric access?
Yes. Through its Irongate partner, HammerTech offers facial-recognition turnstiles and gates engineered for construction, with site entry and labour hours synced into HammerTech. Site Control deliberately does not do biometrics, turnstiles or physical hardware; it uses a permanent entrance QR for guest sign-in, contractor self-join and check-in/out. HammerTech offers hardware access control; Site Control uses a no-hardware QR workflow. Compare those operating models with the site's requirements.
Does either platform have an RFI workflow?
Site Control includes a full RFI workflow: create, attach, comment, answer and close, which is unusual in this site-access category. HammerTech focuses on EHS and site operations and does not document an RFI module on its platform pages. If request-for-information tracking matters to your site teams, Site Control covers it natively; HammerTech would need a separate construction-management tool alongside it for that collaboration workflow.
Which is better for a UK general contractor?
It depends on the site requirements. Large multi-site UK GCs may need HammerTech’s turnstiles, equipment management and inspection modules, alongside a UK CDM document source. Site Control provides UK RAMS/CPP/COSHH generation, gated inductions, RFIs, document-review evidence and published per-site pricing without access-control hardware. Compare the required physical access, plant and document workflows, then check each product’s quoted or published price.
How we built this comparison
Figures and feature claims are from HammerTech's pricing, platform, access-control and integration pages re-checked 2026-10-05; HammerTech pricing is quote-only with no public figures, and Site Control pricing reflects The Site Book's published From-£675/site framing.
Every pricing, feature, and fit claim in this comparison is checked against public vendor documentation and, where relevant, independent sources. The “source basis” footer on each product card lists the exact URLs and the date we fetched them. The internal freshness dashboard flags source evidence after 45 days; priority pricing is scheduled for monthly review and feature or ownership claims for quarterly review. Last reviewed on .
