PriMus — Professional Construction Estimating Software
Design Smarter. Model Faster. Deliver with Confidence.
PriMus is the detailed construction estimating software trusted by project designers, quantity surveyors, contractors, and public administrations worldwide. Produce bills of quantities, run BIM quantity takeoffs, manage construction costs, and schedule project work — from one connected suite that grows with every project you take on.
Now available across the Middle East and Africa through Isotech — your regional implementation partner.
Certification Callout buildingSMART International® Certified — IFC quantity takeoff from BIM models, verified to the global openBIM standard.
Trust Statement Before technology, there has to be a relationship. ACCA software and Isotech work alongside estimating teams, quantity surveyors, and construction companies across the GCC — coaching and supporting your adoption of professional construction estimating software at every step.
Value Pillars
The Complete Construction Estimating Software Suite
Five integrated tools covering every estimating workflow: desktop cost estimates and BoQs, BIM model quantity takeoff, CAD drawing measurement, cloud-based online estimating, and project scheduling. One platform. Every project stage. No gaps in your commercial process.
BOQ Software Built for Professional Procurement
Produce bills of quantities to the exact format and structure your client, contractor, or government authority requires. PriMus is the BOQ software that handles public procurement documentation, tender packages, and contract BoQs — with full audit trails and export in every standard format.
BIM-Connected Construction Cost Estimator
PriMus IFC extracts quantities directly from IFC BIM models — automatically, accurately, and dynamically. When the model changes, the estimate updates. The construction cost estimator that stays connected to the design, not behind it.
Online Construction Takeoff Software. Free to Start.
PriMus online is the cloud-based construction takeoff software that lets your entire team collaborate on the same estimate in real time — from any browser, any device, anywhere. Free with usBIM registration. No installation required.
Supported by Isotech from Day One
We do not hand over software and walk away. Isotech configures PriMus for your project types and procurement environment, trains your team, and stays alongside you long after go-live. Because before technology, there has to be a relationship.
Platform Introduction
A Construction Cost Estimate That Lags Behind the Design Is Not a Cost Estimate. It Is a Risk.
GCC construction operates at extraordinary speed and scale. Mega-projects, government infrastructure programmes, and national vision initiatives are running simultaneously across the region — and the commercial teams behind them are under pressure to produce accurate cost estimates faster, maintain BoQs through continuous design changes, and demonstrate BIM cost compliance on projects that increasingly require it.
For many construction companies and quantity surveying practices across the region, this is still managed through spreadsheets: manually maintained, difficult to update when designs change, disconnected from the BIM model, and impossible to audit under the scrutiny of a public procurement review.
PriMus solves this. It is the detailed construction estimating software chosen by professionals, construction companies, and public administrations for cost estimating, quantity surveying, and cost management — precisely because it connects the estimate to the project, keeps the BoQ current through every design iteration, and provides the professional documentation output that GCC procurement processes demand.
Five tools. One connected suite. Every construction estimating workflow covered — from first budget to final account.
Detailed construction estimating software for cost estimating, quantity surveying, BoQ management, and BIM cost compliance.
Free Trial Callout
Try PriMus free for one month — full capability included, with technical support from day one. Then choose the plan that fits your project volume and team structure.
PriMus: Core Cost Estimates and Bills of Quantities
Detailed Construction Estimating Software for Every Stage of the Cost Process.
PriMus is the core application, the detailed construction estimating software that covers the full range of cost estimating, quantity surveying, and cost management activities from first budget through tender documentation to post-contract cost control.
Produce construction cost estimates quickly and accurately using an interface built for professional estimating workflows. Build bills of quantities to any structure your procurement process requires. Conduct rate analysis against a constantly updated database of construction industry price lists, covering building and plant works with current articles, materials, and prices, and manage site material requirements and construction site costs in a single environment.
For GCC construction companies and consultants working to government procurement requirements, PriMus is the BOQ software that produces submission-ready tender documentation, structured to public authority formats, fully auditable, and exportable in every standard format your submission requires.
PriMus IFC: Quantity Takeoff from BIM Models
Extract Quantities Directly from Your BIM Model. Automatically. Every Time the Model Updates.
The most significant change in construction estimating software over the past decade is the ability to derive quantities from a BIM model rather than measuring them manually from drawings. PriMus IFC delivers this — certified by buildingSMART International for IFC quantity takeoff.
Open any IFC file from Revit, ArchiCAD, Edificius, Allplan, Tekla, or any IFC-compliant tool. Every building element — walls, floors, columns, beams, openings, finishes, MEP components — is measured automatically from the model geometry. No manual counting. No scaling from drawings. No risk of omission because an element was overlooked.
The extracted quantities transfer directly into PriMus for cost estimate and BoQ production. When the design changes, the quantities update. The estimate always reflects the current model — not last week's version or the one before that.
For quantity surveyors and construction estimating software users across the GCC working on BIM-delivered projects — or who need to demonstrate 5D BIM capability to government clients — PriMus IFC turns BIM-connected estimating from a specialist capability into a daily workflow.
PriMus TAKEOFF: Quantity Takeoff from CAD Drawings
Professional Construction Takeoff Software for CAD Files and Scanned Drawings.
Not every project arrives with a BIM model. Renovation works, smaller developments, infrastructure projects, and jobs where the design is delivered in 2D all require quantity takeoffs measured from drawings — and the accuracy of the bill of quantities depends entirely on how reliably those measurements are made.
PriMus TAKEOFF is the construction takeoff software designed for this workflow. Open DWG and DXF CAD files, or scanned raster images of drawings, directly in PriMus TAKEOFF. Measure quantities using purpose-built tools for linear measurement, area calculation, and element count — with the precision of a professional software tool, not the approximation of manual scaling.
Every measurement transfers directly into PriMus for cost estimate and BoQ production, with a fully auditable measurement record that tracks from drawing through quantity to cost — essential for the procurement audit trails that public authority contracts across the GCC require.
PriMus Online: Cloud Collaborative Estimating
Online Construction Estimating Software. Real-Time Collaboration. Free to Start.
PriMus online is the cloud-based construction estimating software that brings full professional estimating capability to any browser, on any device, from any location, with real-time collaborative working built in from the ground up.
For construction companies and quantity surveying practices managing projects across the GCC and wider MEA region, where the estimating team, the site manager, the commercial director, and the client representative may be in different cities or different countries, PriMus online creates a single shared environment that every authorised team member accesses simultaneously.
Multiple users work on the same cost estimate or BoQ at the same time. Changes are visible in real time. The current version is always in the cloud, accessible from anywhere, never lost to a local machine failure, never sent as an email attachment that creates a version conflict.
PriMus online is free as part of usBIM platform registration, including cloud storage, full BOQ software capability, and real-time collaboration, making it the fastest way to start using professional construction estimating software with no upfront investment and no installation overhead.
PriMus KRONO: Project Scheduling
Link Your Construction Estimates to the Project Programme. Manage Time and Cost Together.
Cost overruns and programme delays are rarely independent problems. When the construction estimate and the project schedule are disconnected, neither tells the complete story — and project owners, government authorities, and commercial teams are left making decisions with only half the information they need.
PriMus KRONO connects the two. Build Gantt charts for the full construction programme. Define work phases and activities. Link programme activities directly to the cost items in your PriMus estimate — so that cash flow projections, resource loading, and progress reporting are all derived from the same connected picture of cost and time.
For government contracts and public procurement across the GCC — where programme reporting, milestone certification, and progress payment documentation are contractual requirements — PriMus KRONO provides the scheduling and reporting capability to meet those obligations from within the same construction estimating software environment that manages your cost data.
PriMus for the GCC
Construction Estimating Software for Contractors and Quantity Surveyors Working at GCC Scale.
GCC construction is not like construction anywhere else. Projects are larger. Procurement requirements are more prescriptive. Government clients expect detailed, auditable documentation at every stage. And the financial exposure on major infrastructure or development programmes demands estimating precision that spreadsheets cannot deliver.
PriMus is the construction estimating software for contractors, quantity surveyors, project designers, and commercial managers who operate at this level.
For contractors tendering government infrastructure, PriMus is the BOQ software that produces submission-ready tender packages, with full rate analysis documentation, quantity measurement records, and document export formats that meet public authority requirements across the region.
For quantity surveyors managing cost across the full project lifecycle, PriMus is the quantity surveying software that connects pre-contract estimates to post-contract cost management, tracking variations, certifying payments, and reconciling the final account within the same environment used to produce the original tender.
For project designers and consultants producing cost plans for client approval, PriMus is the construction cost estimator that delivers professional, credible cost documentation at every design stage, from order of magnitude budget through detailed design cost plan to tender estimate.
And for organisations delivering BIM-compliant projects, where 5D BIM is a procurement requirement on major GCC infrastructure works, PriMus IFC is the certified construction takeoff software that makes model-connected estimating a working daily practice.
Produce submission-ready tender packages with rate analysis, quantity records, and export formats required by public authorities.
Connect pre-contract estimating to post-contract cost management, variations, payment certification, and final account reconciliation.
Deliver credible cost documentation from early budget planning through detailed design cost plans and tender estimates.
Use certified IFC quantity takeoff to make 5D BIM and model-connected estimating part of the daily workflow.
Capabilities Summary
Detailed Construction Estimating Software — Five Tools. One Connected Platform.
What Our Testimonials Say
Marcin Pszczolka
Poland • Civil Design Lead
Pierpaolo Canini
Switzerland
Victor Fuentes
Chile
David Quevedo
Ecuador
Marcin Pszczolka
Poland • Civil Design Lead
Pierpaolo Canini
Switzerland
Victor Fuentes
Chile
David Quevedo
EcuadorIsotech Differentiator
Detailed Construction Estimating Software. Regional Expertise. Long-Term Support.
PriMus is the construction estimating software chosen by professionals and public administrations globally, built by ACCA, the world's number one IFC-certified openBIM expert. As Isotech, we bring it to contractors, quantity surveyors, and commercial teams across the Middle East and Africa with the regional project knowledge, procurement context, and implementation expertise that the GCC construction environment demands.
Deploying construction estimating software that actually works in your environment, configured for regional price lists, aligned to local BoQ formats, integrated with your BIM model workflow, and adopted by your estimating team, requires a partner who understands the regional context as well as the technology.
We configure. We train. We stay alongside you. In a region where many estimating teams are making the transition from spreadsheet-based workflows to professional construction estimating software for the first time, the support of an experienced regional partner is what makes the difference between a tool that gets used and one that gets shelved.
Configuration
Set up PriMus for regional price lists, BoQ formats, and procurement requirements.
Training
Train estimators, quantity surveyors, commercial managers, and site managers.
Integration
Connect PriMus IFC with BIM models and existing design team workflows.
Support
Provide multilingual onboarding and dedicated support across GCC and MEA.
Technology Partner
We are proud to partner with ACCA Software, a global provider of BIM, digital construction, and Common Data Environment (CDE) solutions. Through this collaboration, we leverage advanced technologies that support ISO 19650-compliant workflows, streamline project coordination, and enhance information management across the entire project lifecycle.
This partnership enables us to deliver innovative, scalable, and industry-aligned solutions that help clients improve collaboration, efficiency, and project outcomes.
Questions Worth Answering Up Front.
What is PriMus, and which construction estimating workflows does it cover?
PriMus is a five-tool construction estimating software suite covering every workflow in the estimating and cost management process. PriMus desktop handles cost estimates, bills of quantities, rate analysis, and site cost management. PriMus IFC extracts quantities from IFC BIM models for 5D BIM estimating. PriMus TAKEOFF measures quantities from CAD drawings and scanned images. PriMus online provides cloud-based collaborative estimating from any browser. PriMus KRONO connects the construction estimate to the project programme. Used by project designers, quantity surveyors, contractors, and public administrations — chosen for its depth of capability and its connection to BIM model workflows.
What is BOQ software, and how does PriMus support the production of bills of quantities?
BOQ software is construction estimating software designed to produce structured, itemised bills of quantities — listing every measurable project element alongside quantity, unit rate, and extended cost. Bills of quantities are fundamental to GCC construction procurement, as they are required by government authorities and major private clients for tendering, valuation, and contract administration. PriMus produces bills of quantities in any client, contractor, or public authority format — with full audit trails, rate analysis documentation, and export to Word, PDF, and CSV for submission and review.
How does PriMus IFC work as construction takeoff software from BIM models?
PriMus IFC opens IFC BIM files from Revit, ArchiCAD, Edificius, Allplan, Tekla, or any IFC-compliant tool and automatically extracts quantities from the model geometry—walls, floors, columns, openings, finishes, and MEP components. Measurements are transferred directly into PriMus for cost estimation and BoQ production. When the model changes, quantities update automatically. PriMus IFC is certified by buildingSMART International, independently verifying its IFC quantity takeoff capability against the international openBIM standard.
Is PriMus construction estimating software for contractors suitable for GCC government procurement?
Yes. PriMus is widely used as construction estimating software for contractors on government infrastructure projects across the region. Its BOQ software capabilities support the document formats, audit trail requirements, and rate analysis documentation of GCC public procurement. Its BIM integration through PriMus IFC supports the 5D BIM requirements increasingly specified on government projects. Isotech provides full regional configuration support — including price list setup for GCC market rates and BoQ template alignment to local authority requirements.
What is quantity surveying software, and how complete is PriMus for QS use?
Quantity surveying software covers the full range of QS activities — from initial cost planning and tender pricing through contract administration, variation management, and final account reconciliation. PriMus covers all of these across its suite: cost estimates and BoQs from PriMus desktop, BIM takeoff from PriMus IFC, CAD measurement from PriMus TAKEOFF, collaborative online working from PriMus online, and programme management from PriMus KRONO. For quantity surveying practices managing pre- and post-contract responsibilities on major GCC projects, PriMus provides a complete quantity surveying software platform in a single integrated environment.
Can PriMus online be used without installing the desktop application?
Yes. PriMus online runs entirely in the browser — on any device, from any location, no installation required. It provides full construction cost estimation and BOQ software capabilities in a real-time, collaborative cloud environment. Multiple team members can work on the same estimate simultaneously. PriMus online is free with usBIM platform registration, making it the lowest-friction starting point for teams that want professional construction estimating software without a desktop deployment.
What support does Isotech provide for PriMus implementation?
Isotech provides end-to-end coaching and implementation support — from regional price list configuration and BoQ template setup through team training and long-term technical assistance. We configure PriMus for your specific project types and procurement environment, not a generic setup. For organisations transitioning from spreadsheet estimating to professional, detailed construction estimating software for the first time, we provide the structured onboarding and ongoing guidance that make adoption successful and sustained.
The Construction Estimating Software Your Commercial Team Has Been Waiting For.
PriMus connects your cost estimates, bills of quantities, and quantity takeoffs to the current state of every project — whether it lives in a BIM model, a set of CAD drawings, or a live construction programme. Trusted by professionals and public administrations globally. Backed by Isotech’s coaching and support from day one across the Middle East and Africa.
Try it free. Control your costs with confidence. Build with Isotech alongside you.
“Technology creates possibilities. Relationships create successful outcomes.”
