Written by Nicola Dobbie, Founder, The Site Book — Last reviewed
Your Construction Phase Plan — sorted
Every job needs one. Most builders hate writing them. Whether you need a CPP for an extension or a full commercial project, we do it for you. Describe the job or upload a pre-construction plan — your construction phase plan template is filled in and ready in minutes, not hours.
How it works
Upload a pre-construction plan or describe the job. Either way, your CPP is ready in minutes.
Describe the job — or upload a PCPP
Tell us what you're doing, or upload a pre-construction plan from your client. We read the whole document and pull out the details that matter — ground conditions, existing services, access restrictions.
We fill in the hazards and controls
Based on your job description, we pre-fill the risk register, emergency procedures, site rules, and welfare arrangements. For domestic jobs, the Lightweight CPP wizard asks just 4 questions.
Review and adjust
Check what was filled in. Add anything specific to your site. Nothing goes into the document without your approval.
Download and share
Professional PDF with your logo. Share a read-only link with the client or principal designer — no login needed on their end.
Your finished Construction Phase Plan
Already got a pre-construction plan from your client?
Upload it — we read the whole thing. Ground conditions, existing services, asbestos surveys, access restrictions — it all feeds straight into your CPP so nothing gets missed. You review everything before the document is created.
What's included
- Lightweight CPP for domestic projects — 4 questions, 1–2 page output
- Full CPP for commercial projects with comprehensive wizard
- Pre-filled from your project description and site details
- Risk register with site-specific hazards and control measures
- Emergency procedures, welfare arrangements, and site rules
- Covers all CDM 2015 requirements for notifiable and non-notifiable projects
- Include site photos directly in the document
- Company-branded PDF — share with clients or principal designers
Enter your site details once — they flow into every document
Domestic job? Lightweight CPP — done in 5 minutes
If you're the only contractor on a domestic project, you don't need a 20-page document. Our Lightweight CPP wizard asks 4 plain-English questions and creates a professional 1–2 page plan that covers everything CDM 2015 requires.
Kitchen extension, loft conversion, bathroom refit — 4 questions, done.
What's included at each tier
| Feature | Starter£0 | Pro Monthly£39/mo | Pro Annual£30/mo | Business£99/mo |
|---|---|---|---|---|
| First project free | — | — | — | |
| RAMS generator | ||||
| PDF download | ||||
| Worker sign-off | ||||
| Unlimited projects | ||||
| CPP generator | ||||
| COSHH library | ||||
| Team members | — | — | ||
| Priority support | ||||
| Site inductions | — | |||
| Toolbox talks | — | |||
| Multi-site rollout | — | |||
| Save £108/yr vs monthly | — | — | — |
Common questions about Construction Phase Plans
Do I need a CPP for a domestic extension?
Yes. Under CDM 2015, every construction project needs a Construction Phase Plan — including domestic extensions, loft conversions, and kitchen refits. The good news is that for domestic projects where you're the only contractor, you don't need a 20-page document. Our Lightweight CPP wizard creates a professional 1–2 page plan in under 5 minutes.
What's the difference between a CPP and RAMS?
A CPP (Construction Phase Plan) is the overall safety plan for the whole project — it covers site rules, emergency procedures, welfare, management arrangements, and a risk register. A RAMS (Risk Assessment and Method Statement) covers a specific piece of work within the project — the hazards and step-by-step method for that task. You need both. The Site Book creates them both from the same project description.
Already got a pre-construction plan from my client?
Upload it. We read the whole document — whether it's a PCPP from a principal designer, an architect's site report, or a client brief — and extract ground conditions, existing services, asbestos surveys, access restrictions, and more. Everything feeds straight into your CPP so nothing gets missed.
What if my project is notifiable?
The Site Book checks your project automatically based on duration and headcount. If your job exceeds 30 working days with more than 20 workers, or 500 person-days, we flag it and your F10 HSE notification is pre-filled from your project data. Review it and submit — no forms, no guesswork.
Can the principal designer see my CPP?
Yes. You can share a read-only link to your full document pack — CPP, RAMS, inductions, everything — with one click. No login required on their end. Reset the link at any time.
Do I need a CPP for a kitchen extension?
Yes. CDM 2015 requires a Construction Phase Plan for every construction project, including kitchen extensions. As the only contractor on a domestic job, you need a plan that covers site rules, emergency procedures, and key hazards. The good news: our Lightweight CPP wizard creates a professional 1-2 page plan in under 5 minutes — designed specifically for domestic extensions.
Do I need a CPP for a loft conversion?
Yes. Loft conversions involve working at height, structural alterations, and often electrical and plumbing work — all of which need documenting in a Construction Phase Plan. CDM 2015 applies to all construction work, domestic or commercial. The Site Book creates a CPP tailored to loft conversions with the right hazards pre-filled.
Do I need a CPP for a bathroom?
Yes. Even a straightforward bathroom renovation involves risks — electrical work in wet environments, plumbing, tiling, and potentially asbestos in older properties. CDM 2015 requires a Construction Phase Plan for all construction projects. Our Lightweight CPP covers bathroom refits in 4 simple questions.
What's the difference between a CPP and RAMS?
A CPP covers the whole project — site rules, emergency procedures, welfare, management arrangements, and an overview of risks across all work activities. A RAMS covers a specific piece of work within the project — the detailed hazards and step-by-step method for that task. You need both. The CPP is your project safety plan; the RAMS is your task-level detail. The Site Book creates both from the same project description.
CPP for domestic extension
On domestic projects with a single contractor, CDM 2015 still requires a Construction Phase Plan — but it doesn't have to be a 20-page document. The Site Book's Lightweight CPP wizard is designed for exactly this: answer 4 questions about your job and get a professional 1-2 page plan that covers everything the regulations require. Works for rear extensions, side returns, single and double storey builds.
Related guides
What is a CPP?
Construction Phase Plans explained in plain English.
CPP Example
A worked example of a Construction Phase Plan.
Do I Need a CPP for a Domestic Extension?
When a CPP is required for domestic building work.
Principal Contractor Duties
Your responsibilities as principal contractor under CDM 2015.
Honest pros and cons
Pros
- Full Construction Phase Plans, not just RAMS bolt-ons
- CDM 2015 structure pre-filled from your job brief
- Version history — download a fresh PDF any time
- Shareable review link for principal contractors
Cons
- UK CDM 2015 only — international H&S frameworks not covered
- No BIM / 3D model integration
- Phased-handover CPP edits still need a human review step
Why The Site Book
- Only UK construction compliance tool that ships RAMS + CPP + COSHH + inductions + worker sign-off in one flat-rate subscription.
- AI-generated documents are site-specific from a natural-language brief, not a template library you hand-fill -cuts writing a RAMS from 2 hours to under 5 minutes.
- Worker sign-off, PCPP import, cert tracking, and document checking are included at the entry tier, not locked behind an enterprise plan.
- Transparent flat-rate pricing starting at £30/mo -no per-seat surprise as the team grows.
Your first CPP — done today
No card needed. No catch. Create your first project and download a professional Construction Phase Plan in minutes.
Compared against the competition
How TheSiteBook stacks up
Alternatives to HandsHQ for Small Builders (UK 2026)
HandsHQ is a genuinely good tool - but it's built for mid-to-large contractors with dedicated health and safety staff, and if your team is under ten people you're almost certainly paying for scale you don't use.
See comparison →
Best Alternatives to RAMS App for UK Builders (2026)
The top credible alternatives to RAMs App for builders who have outgrown template-only tooling - The Site Book for full CDM coverage at flat-rate pricing, HandsHQ for enterprise, RapidRAMS for pay-per-document, Evalu-8 for broader EHS, CDM Wizard as a free learning starting point, and Word/Excel for DIY paperwork.
See comparison →
Best Construction Compliance Software (2026)
Full compliance suites ranked - The Site Book for CDM document creation at small-builder prices, Evalu-8 for broad enterprise EHS, Procore for integrated project management, and SafetyCulture for ongoing inspection workflows.
See comparison →