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Cloud-based Estimating & Cost Management Software for Construction

One system. Full control. 

Chalkstring is the only fully integrated cloud platform built for specialist contractors — combining estimating and cost management in one connected workflow.

From first price to final account, your team works in a single system. Estimates flow straight into live projects, and everything — scope, rates, variations, valuations, procurement, plant and more — is tracked in real time. No spreadsheets. No silos. No surprises.

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Built for
specialist contractors.

Chalkstring was built by people who know what it's like to run specialist contracting businesses. Every feature reflects the real challenges you face — from pricing work to tracking profit.

Whether you're in interiors,  facades or beyond, we’ve designed a takeoff, estimating and cost management system with the specialist trades in mind.

Chalkstring's estimating module

Price work faster, smarter and with total consistency.

Build accurate rates using shared templates and live supplier quotes. Measure directly from drawings, create professional tenders in clicks, and explore value engineering options without starting from scratch.

From first measure to handover, everything is structured, auditable and ready to track.

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All the estimating features you need

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Templates & Centralised Database

Estimate faster and more consistently with shared templates and a single pricing database.

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Rate Build-Up

Build accurate, auditable rates using structured labour, material and prelims.

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Professional Tender Documents

Produce sharp, branded tenders in clicks — easy to read, easy to say yes to.

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Integrated Takeoff

Measure from drawings and flow quantities straight into your estimates — no double-handling.

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Value Engineering

Quickly price and compare options to find the best value for you and your client.

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Project Handover

Generate consistent handovers with full scope, pricing and assumptions — instantly.

See Chalkstring for yourself

Chalkstring's cost management module

Benefit from a live, 360° view of every project’s commercial position — from procurement to final account.

Track cost, revenue, margin and cost-to-complete in one connected system.

No spreadsheets, no surprises — just total control from day one.

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All the cost management features you need

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Post Tender Review

Reality-check the scope, pricing and assumptions before delivery begins — and lock in margin with a clean, structured commercial baseline.

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Plant management

Track hired plant day-by-day, avoid hidden charges, and see real-time costs reflected in your live project performance.

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Labour

Approve hours against live scope and mark up drawings with what’s been done and issue certification— progress, cost and performance all stay aligned.

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Cost reports

See a live picture of your cost, revenue and margin position for all projects— with breakdowns by zone, package or cost type. No spreadsheets. No guesswork.

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Procurement

Raise and manage material orders directly from your live scope. Log deliveries & reconcile invoices easily.

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Variations

Track and price changes as they happen, not after the fact. Maintain a clear audit trail and protect your margin from scope creep.

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Valuations

Log site progress accurately and build structured applications for payment — using live scope, variations and cost data. Nothing gets missed, nothing slips through.

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Accounts integration

Raise and manage material, labour and subcontract orders directly from your live scope — with full pricing context, not a blank order sheet.

From spreadsheets to real-time certainty 

Before Chalkstring

Before Chalkstring

Pricing methods vary wildly across the team

Hours lost digging through old files or past tenders

Spreadsheets full of copy/paste errors and broken formulas

Client tenders lack clarity, detail or consistency

Handover means rework, rebuilds and lost assumptions

Value E requests cause chaos — or get ignored

The team is stressed and not working efficiently

We don’t know where the margin stands — it changes daily

Procurement doesn’t match what was actually priced

Variations are buried in emails or tracked in separate files

Valuations are slow, inconsistent and error-prone

Overspends aren’t spotted until it’s too late

Forecasting cost-to-complete is manual guesswork

Everyone’s working in different spreadsheets and systems

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With Chalkstring

Build rates using shared templates and consistent methods

Estimate faster by using a centralised database

Generate clear, branded, client-ready tenders in clicks

Track cost, revenue and margin as you build the price

Hand over cleanly — no rekeying, no gaps, no ambiguity

Respond to VE changes in minutes, not hours

A happy, productive team who can now sleep at night

See margin, cost and revenue in real time — no surprises

Align procurement with the agreed project scope

Log and track variations in one central place

Generate accurate, auditable valuations fast

Track spend daily and catch overspends early

Forecast cost-to-complete in real time as the job progresses

Keep commercial, site and accounts fully aligned

With Chalkstring you will:

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Centralise

Bring your estimating, cost management, procurement, valuations, and reporting into one cloud-based system — no more silos, spreadsheets or lost data between teams.

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Standardise

Use consistent templates, workflows and pricing across every project — from bid to final account — so your whole team works the same way, with full transparency and control.

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Analyse

See live cost, value, margin and cost-to-complete at every stage of the job. Learn from real data, improve performance and protect profitability — project by project.


Craig Scott video case study (1)
Video Case Study

Hear how SCS makes better decisions using Chalkstring

Craig Scott, Commercial Director at SCS Building Solutions explains how the management team uses Chalkstring in board meetings to review each project's performance.

Want to chat? Let’s see if we’re a fit.

We don’t do hard sells. And we won’t demo unless we know we can help.

Support from people who "get it"

When you call, we answer. No ticket queues, no bots — just real help from real people.

Our support team also includes experienced Quantity Surveyors, so you’ll  speak to someone who understands Chalkstring, your world and speaks your language.

Whether it’s a quick how-to or a detailed walkthrough, we’re here to make sure you get the most out of Chalkstring — every step of the way.

Chalkstring cost management software being used by specialist subcontractors

★★★★★

“PWB has grown significantly and Chalkstring has, without doubt, supported this."

Paul Bagley
PWB Drylining Ltd

★★★★★

"We can easily price different options and schemes, make changes and see the financial impact in seconds."

Rory Smith
Smiths Drylining Ltd

★★★★★

"Chalkstring's increased our speed and efficiency. We have only 2 estimators to price/win projects worth £18m pa."

Dan Elwell
Rapidfix Ltd

How Chalkstring helps specialist subcontractors

  • Use one platform for all projects
  • Apply defined & consistent processes
  • Standardise documentation
  • Automate repetitive tasks
  • Eradicate data duplication
  • Adopt a project management framework
  • Comply with ISO & quality procedures
  • Work from anywhere, using the cloud
  • View project data in real-time
  • Identify early warnings & take action
  • Control & analyse spend better
  • Eliminate over-ordering & over-paying
  • Accurately predict cost-to-complete
  • Make data-driven, informed decisions
  • Scale & grow your business