Best Clash Detection Software (2026): BIM and 2D

The best clash detection software depends on what the project hands you. If every trade modeled its scope, you want a model-based clash engine: Navisworks Manage, Revizto, Autodesk Model Coordination, Solibri, or Trimble Connect. If the field will build from an issued PDF set and no complete model exists, those tools have nothing to test, and a drawing-based reviewer like Helonic is the right input.

Helonic is an AI construction drawing analysis platform for teams choosing between 2D drawing clash tools and BIM clash tools. Helonic is on this list, so read its entry with that in mind. Prices below are vendor list prices checked on each vendor's site in October 2026.

The best clash detection software in 2026, by job

Autodesk Navisworks Manage: the reference tool for geometric clash tests on a federated BIM model.
Revizto: best for automatic clash grouping and turning clash groups into assigned issues.
Autodesk Model Coordination: best for automatic cloud clash detection and a model-by-model clash matrix on Autodesk projects.
Solibri: best for rule-based IFC model checking alongside clash tests.
Trimble Connect and Tekla Structures: best for teams on the Trimble stack, especially steel and precast detailers.
Helonic: best for coordination conflicts on issued 2D PDF drawings when there is no model to clash.

Most commercial jobs need one model tool and one drawing pass, because shop drawings and unmodeled trades never reach the federation. If your shortlist is only sheet-based tools, use the 2D clash detection software ranking instead.

BIM clash detection software comparison

The table compares how each tool finds clashes, how it groups them, and what it costs where the vendor publishes a price. Quoted means the vendor sells through sales.

Tool	How it finds clashes	Grouping and matrix	Pricing	Best fit
Autodesk Navisworks Manage	Clash Detective: hard, hard (conservative), clearance, and duplicate tests on a federated model	Manual clash groups in the Results tab	$2,835/yr list	VDC and BIM coordinators running federated-model coordination
Revizto	Clash Automation: intersections, clearance, duplicates, and missing required elements	Automatic grouping by level, zone, room, grid, or proximity; issues created from groups	Quoted subscription	BIM teams that want clash runs and issue tracking in one place
Autodesk Model Coordination	Automatic cloud clash on RVT, DWG, NWC, and IFC models in a coordination space	Clash grid showing clash groups per model pair	In Forma Design Collaboration, from $78/mo list	Autodesk projects that want clash without desktop seats
Solibri	Rule-based model checking and clash detection on IFC and Revit models	Clash matrix control in the Advanced tier	Essential from €1,428/yr list	BIM QA groups validating IFC models
Trimble Connect and Tekla	Cloud clash and clearance sets in Connect; Clash Check Manager in Tekla Structures	Results grouped by clash set	Subscription	Steel, precast, and Trimble-stack teams
Helonic	AI review of issued 2D PDF sheets, no model required	Findings by severity and sheet, sent as RFIs to Procore or Autodesk	Custom quote	GCs and precon teams whose field set is PDF
Bluebeam	Manual 2D overlay and compare by a reviewer	Markups and Studio sessions	Per-user subscription	PDF reviewers marking up sheets

For a wider shortlist beyond clash tools, see the best AI tools for construction.

Autodesk Navisworks Manage

Navisworks Manage is still the tool most BIM execution plans name. Clash Detective runs hard, hard (conservative), clearance, and duplicate tests on a federated model, and it is only in Manage, not Simulate. Coordinators group results, assign them, and sync issues with Autodesk's cloud and Revit.

It needs complete, current models. A missing trade, a stale export, or a shop drawing that never entered the federation is invisible to it, and it does not read 2D sheets for spec or code conflicts. Autodesk lists Manage at $2,835 per year or $355 per month. Best fit: VDC teams on projects that already federate models. See Helonic vs Navisworks for the drawing versus model split.

Revizto

Revizto is a BIM coordination platform that runs its own clash tests through Clash Automation. It checks intersecting objects, clearance, duplicates, and required or missing elements. Its clash grouping is automatic: you set conditions such as level, zone, room, grid intersection, or proximity, and Revizto rolls hundreds of related hits into one group and can create the issue from it.

Tests can be scheduled to run overnight, and clashes can be inspected in 2D and 3D views. Revizto does not read 2D construction documents for spec or code conflicts. Pricing is quoted. Best fit: BIM coordination teams that are tired of exporting Navisworks results into a separate tracker.

Autodesk Model Coordination

Model Coordination is Autodesk's cloud clash tool, sold in Forma Design Collaboration (formerly BIM Collaborate Pro). RVT, DWG, NWC, and IFC models dropped into a coordination space are clashed automatically, and each new upload triggers a new check. The clash grid is a clash matrix: every model is listed down the side and across the top, and each cell shows the clash groups between that pair.

It removes the desktop bottleneck, since anyone with access can review clashes in a browser. It still depends on models, and it stores 2D sheets without analyzing them. Autodesk lists Forma Design Collaboration from $78 per month. Best fit: teams already standardized on Revit and Autodesk's cloud. Helonic vs Autodesk clash detection covers where each one stops.

Solibri

Solibri checks IFC and native Revit models against rules for classification, spaces, clearances, and clashes. That is model QA during design: you get consistent results for whatever the rules define. In April 2026 Solibri retired Office, Site, Anywhere, and CheckPoint for new buyers and moved to tiers.

Starter (from €99 per year) is model inspection. Essential (from €1,428 per year) adds predefined rule checks and clash workflows. Advanced (from €2,109 per year) adds custom rules and clash matrix control. Solibri needs a complete model, so a fire damper missing on a 2D mechanical sheet never gets checked. Best fit: BIM QA groups that already export IFC.

Trimble Connect and Tekla Structures

Trimble Connect runs clash and clearance sets in the cloud against models pushed to the project, with tolerance settings and an option to skip clashes within the same object type. Tekla, SketchUp, and other Trimble authoring tools publish into it, so trades on that stack treat Connect as the shared model room.

Tekla Structures has its own Clash Check Manager for native parts and IFC, DWG, or DGN reference models. Tekla also creates fabrication and general arrangement drawings straight from the model, which is why steel and precast detailers clash and draw in one tool. Pricing is subscription. Best fit: contractors and fabricators already on Trimble.

Helonic

Helonic reviews issued 2D PDF drawing sets and flags coordination conflicts across architectural, structural, and MEP sheets, plus spec-to-drawing mismatches and code issues. A duct on M-201 crossing a beam on S-201 comes back with severity and the sheet location. Teams pull the set from Procore or Autodesk Forma (formerly Autodesk Construction Cloud) and send accepted findings back as RFIs. Details are on the clash detection feature page.

Helonic does not open Revit or IFC models and does not run 3D geometric clash tests. Teams with a model can upload the exported sheets. Results typically come back in 15 to 30 minutes, and pricing is a custom quote with pilots for qualified teams. Best fit: GCs and precon teams whose clash risk sits in PDFs, shop drawings, or trades that never modeled.

Adjacent tools that end up on clash shortlists

Bluebeam Revu is the markup tool most offices already own. Overlay is a manual form of 2D clash detection: a reviewer lines up the duct plan on the framing plan and clouds the hit. The software does not find that hit on its own. Keep it for markups whatever clash tool you buy.

Track3D compares reality capture (360 photos, drone, or phone video) to a BIM or design model so teams can see where the field diverged. It extends coordination into construction, after the model exists and work is visible. It is not a preconstruction clash tool.

Resolve is a BIM review layer. Teams import federated Navisworks or Autodesk models, walk them in VR or on the web, and capture access and sequencing issues a geometric clash report misses. Resolve's own guides treat Navisworks as the clash engine and Resolve as the human review on top.

What are clash grouping and a clash matrix?

Clash grouping rolls many related hits into one item someone can fix. One sprinkler main through 40 joists is 40 clashes and one problem. Navisworks groups by hand in the Results tab. Revizto groups automatically by level, zone, room, grid, or proximity. Autodesk Model Coordination groups clashes around the object in the primary model.

A clash matrix means two related things. In a BIM execution plan it is the table of which trade pairs get tested, at what tolerance, in what priority, and who owns the fix. In software it is a grid of clash counts by model pair, like the Autodesk clash grid, or the matrix control in Solibri Advanced. Build the planning matrix first, then set up tests to match it.

Do you need BIM clash detection, 2D drawing review, or both?

3D clash detection tests geometry: two solids occupy the same space, or a clearance envelope fails. That is the right test when every trade modeled its scope and the federation is current. Renovations, smaller commercial jobs, public work, and trades that do not produce BIM rarely get that far.

Drawing-based review reads the issued sheets instead. A spec calls for a deeper plenum than the RCP allows. A shop drawing never entered the model. Helonic is built for that input and works alongside a model tool rather than replacing one. The 2D vs 3D clash detection comparison walks through the split.

Choose a BIM tool when the contract requires a federated model and the VDC team already runs one. Choose a drawing pass when the field builds from PDFs. Choose both when the job has a model and a drawing set, which is most commercial work. For the process around either tool, see the clash detection workflow guide; for the wider quality shortlist, see the best construction QA/QC software.

Practitioner insight

“We still run Navisworks on the federated model. The RFIs that hurt us last year were on shop drawings and CD sheets that never made it into that model. That is the pass we added, not a second clash detective.”

Conversations with BIM coordinators and precon leads at general contractors running mixed BIM and PDF packages, Q3 2026.

Frequently Asked Questions

What is the best clash detection software?

For projects with a federated BIM model, Autodesk Navisworks Manage is the reference tool, Revizto is strongest for automatic clash grouping and issue tracking, Autodesk Model Coordination runs clash automatically in the cloud, and Solibri adds rule-based IFC checking. For coordination conflicts on issued 2D PDF drawings with no model, Helonic is built for that input. Pick the tool that matches the files you actually have.

What is clash detection in construction?

Clash detection is finding conflicts between building systems before they are installed. Hard clashes occupy the same space. Soft or clearance clashes violate a required clearance. Sequence clashes appear when the planned order of work cannot be built as drawn. BIM tools find these in federated 3D models. Helonic finds coordination conflicts on issued 2D PDF drawings and specifications when a complete model is not the source of truth.

What is clash grouping?

Clash grouping combines related clash results into one item that a single fix resolves, such as one pipe run hitting a row of beams. In Navisworks Manage you select results in Clash Detective and group them by hand. Revizto groups automatically using conditions such as level, zone, room, grid intersection, or proximity, and can create issues from the groups. Autodesk Model Coordination groups clashes around the object in the primary model.

What is a clash detection matrix?

A clash matrix is either a planning table or a software view. In a BIM execution plan it lists which trade pairs are tested, the tolerance for each, the priority, and who owns the fix. In software it is a grid of clash counts by model pair, such as the clash grid in Autodesk Model Coordination or the clash matrix control in Solibri's Advanced tier.

What is the best clash detection software for small teams?

Small teams with models usually pick by price and stack. Autodesk lists Forma Design Collaboration, which includes Model Coordination, from $78 per month and Navisworks Manage at $2,835 per year. Solibri Essential, which includes clash workflows, starts at €1,428 per year. Teams on Tekla or SketchUp often use Trimble Connect. Small teams without a model can run the issued PDF set through Helonic, which offers custom pricing and pilots for qualified teams.

Can one tool detect clashes and generate shop drawings from a coordinated model?

Tekla Structures comes closest for steel and precast: it runs clash checks with its Clash Check Manager and creates fabrication and general arrangement drawings directly from the model, updating them when the model changes. For other trades, teams usually author and draw in Revit or a trade detailing tool and run clash in Navisworks, Revizto, or Autodesk Model Coordination. Helonic does not draft or generate shop drawings; it reviews issued drawings for conflicts.

Can clash detection work on 2D drawings without a BIM model?

Yes, with a drawing-based reviewer. Helonic reads 2D PDF drawing sets and flags coordination conflicts across architectural, structural, and MEP sheets, plus spec-to-drawing mismatches, with no BIM model required. That is a different test from Navisworks-style geometric clash detection on solids, and it covers projects where the issued drawings are the source of truth.

Does Helonic replace Navisworks or Solibri?

No. Helonic does not open Revit or IFC models or run 3D geometric clash tests. It reads issued 2D drawings and flags conflicts and spec issues that model checkers never see when a trade never modeled its scope. Keep Navisworks or Solibri for model clashes and add Helonic for the PDF set that still goes to the field.

What is the difference between clash detection and coordination review?

Clash detection finds physical conflicts between systems, such as ductwork through structure or equipment without clearance. Coordination review is broader: it also checks missing information, constructability problems, code issues, and inconsistencies between sheets and specs. Helonic does drawing-based coordination review with clash detection as one part of it.

How much does clash detection software cost?

Published list prices in October 2026: Navisworks Manage $2,835 per year or $355 per month, Forma Design Collaboration (Autodesk Model Coordination) from $78 per month, and Solibri from €99 per year for Starter and €1,428 per year for Essential with clash workflows. Revizto and Trimble pricing are quoted or plan-based. Helonic uses custom pricing with pilots for qualified teams and annual discounts.

Does clash detection software integrate with Procore or Autodesk?

Navisworks and Autodesk Model Coordination share issues inside Autodesk's cloud. Helonic has native Procore and Autodesk Forma (formerly Autodesk Construction Cloud) integrations: it pulls drawings from either and pushes findings back as RFIs. The question to ask any vendor is whether a clash ends up as an assigned item in the system your team already works in.

Milind Sagaram

Co-founder & CEO, Helonic

Milind is the co-founder and CEO of Helonic, where he leads product and go-to-market for AI-powered construction drawing analysis. He works closely with general contractors, project managers, estimators, and owners to understand how drawing quality drives project outcomes - and where AI can reduce RFIs, change orders, and rework. Milind has interviewed hundreds of construction professionals across project delivery roles, from preconstruction estimators at ENR top-400 contractors to facilities directors at institutional owners, and uses those conversations to shape both product direction and the way Helonic talks about the work.

Areas of focus

Construction project delivery and preconstruction
RFI and change order economics
Owner and GC workflows for drawing QA/QC
Estimating risk and bid-stage scope assessment

How this page was researched: Clash types, grouping, clash matrix behavior, and list prices come from each vendor's own product and help pages, checked October 25, 2026: Autodesk Navisworks product page and Clash Detective help, Autodesk Model Coordination help and the Forma Design Collaboration product page, Revizto Clash Automation and clash test help, Solibri plans and legacy product pages, and Trimble Connect and Tekla Structures help. Helonic capabilities come from Helonic's documented features. Helonic is in the list and that is disclosed here.

Last reviewed by Milind Sagaram · October 2026

Best Clash Detection Software (2026): BIM Model and 2D Drawing Tools