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Top 10 Best Low Voltage Estimator Software of 2026
Ranked comparison of low voltage estimator software for electrical contractors, with key features, strengths, tradeoffs, and selection criteria.
How we ranked these tools
Core product claims cross-referenced against official documentation, changelogs, and independent technical reviews.
Analyzed video reviews and hundreds of written evaluations to capture real-world user experiences with each tool.
AI persona simulations modeled how different user types would experience each tool across common use cases and workflows.
Final rankings reviewed and approved by our editorial team with authority to override AI-generated scores based on domain expertise.
Score: Features 40% · Ease 30% · Value 30%
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STACK is the strongest overall choice when low-voltage teams need shared drawing takeoffs and repeatable estimates across active bids, while QuoteSoft suits contractors who want structured, assembly-based estimates from drawings without extensive integration requirements.
Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
STACK
Shared cloud takeoff workspaces synchronize drawing revisions, annotations, measurements, and estimate assemblies for distributed estimating teams.
Built for fits when low-voltage contractors need shared drawing takeoffs, repeatable assemblies, and estimator collaboration across active bids..
Countfire
Editor pickAutoCount applies a user-selected drawing symbol across pages and presents editable results for rapid review.
Built for fits when electrical contractors need fast drawing takeoff before separate estimating and bid calculation work..
PlanSwift
Editor pickPlanSwift's configurable assemblies, conditions, and formulas turn counted drawing objects into reusable low-voltage estimate logic.
Built for fits when estimators need customizable desktop takeoff logic for recurring low-voltage scopes and mixed plan files..
Related reading
Comparison Table
Low-voltage estimator software converts drawings, device schedules, and scope data into measured quantities, labor assumptions, and bid-ready costs. This ranking helps analysts, estimators, and technical operators compare takeoff automation, measurement accuracy, integrations, and proposal controls against the tradeoff between faster throughput and detailed configuration, with scores based on workflow coverage, configuration depth, usability, and project fit.
STACK
SMBCloud takeoff and estimating software used by specialty contractors to quantify drawings and build project estimates.
Shared cloud takeoff workspaces synchronize drawing revisions, annotations, measurements, and estimate assemblies for distributed estimating teams.
STACK fits contractors estimating fire alarm, security, communications wiring, and other drawing-led scopes. The workspace supports PDF plan takeoff, scale-based measurements, symbol counts, annotations, custom assemblies, and estimate exports. Shared templates and project access controls help standardize assumptions across multiple estimators.
Specialty low-voltage labor databases are not STACK's central strength, so companies relying on prebuilt catalogs must configure their own assemblies. A security contractor handling revised floor plans can compare drawing versions, update quantities, and preserve estimate context within one project.
- +Browser collaboration keeps current plan sets visible to distributed estimating teams.
- +Custom assemblies connect measured quantities with labor and material assumptions.
- +Automatic counting reduces repetitive selection for repeated low-voltage devices.
- +Drawing revision controls help identify changed quantities before bid submission.
- –Specialized low-voltage labor catalogs require internal assembly configuration.
- –Native BIM takeoff depth is narrower than the primary drawing workflow.
- –A broad public API is not central to the estimating experience.
- –Estimate accuracy depends on maintained assemblies and current cost inputs.
Low-voltage subcontractors
Count devices across revised drawing sets
Fewer missed device quantities
Electrical estimating teams
Build repeatable installation assemblies
More consistent estimates
Show 1 more scenario
Estimating managers
Coordinate multiple estimators on bids
More controlled bid production
Managers distribute shared projects, templates, and drawing sets while reviewing work before submission.
Best for: Fits when low-voltage contractors need shared drawing takeoffs, repeatable assemblies, and estimator collaboration across active bids.
More related reading
Countfire
SMBCloud electrical takeoff and estimating software that automates counts from drawings and supports branch circuit and device estimation.
AutoCount applies a user-selected drawing symbol across pages and presents editable results for rapid review.
Countfire uses a browser workflow for counting, measuring, and reviewing drawings without requiring local CAD installation. AutoCount applies a selected symbol across relevant pages, while estimators can review and correct results manually. PDF plan takeoff work benefits from page organization, visual markups, and quantity exports.
The main tradeoff is scope. Countfire focuses on drawing quantities and does not replace estimating databases, assembly libraries, labor-unit calculations, or job-cost systems. It suits contractors that already use separate estimating software and need faster takeoff before bid calculations.
- +Automatic symbol counting across multiple drawing pages
- +Linear measurement tools for cable and pathway quantities
- +Revision comparison highlights changed drawing content
- +Excel export supports downstream estimating workflows
- –Not a full assembly, labor, or job-cost database
- –Spreadsheet export leaves downstream bid calculations outside Countfire
- –Accuracy depends on clear, consistently drawn symbols
- –Advanced BIM and CAD model workflows are not its core focus
Electrical estimating teams
Count symbols across plan sets
Faster quantity extraction
Low voltage contractors
Measure pathway and cable quantities
Consistent takeoff quantities
Show 1 more scenario
Design-build estimators
Compare successive drawing revisions
Fewer missed changes
Revision comparison identifies changed drawing content before quantities are recalculated.
Best for: Fits when electrical contractors need fast drawing takeoff before separate estimating and bid calculation work.
PlanSwift
SMBDigital takeoff software for construction estimators that supports measuring conduit runs, cable routes, and device counts from plans.
PlanSwift's configurable assemblies, conditions, and formulas turn counted drawing objects into reusable low-voltage estimate logic.
PlanSwift handles lengths, areas, counts, and polylines on imported drawings, then converts those measurements into cost calculations through configurable assemblies and conditions. Estimators can assign labor, material, waste, markup, and production factors to recurring work items. Custom reports organize quantities and costs by project section, phase, or estimate item.
The main tradeoff is the limited amount of specialized low-voltage content supplied out of the box. Teams estimating fire alarm, access control, structured cabling, or audiovisual work must build and maintain their own assemblies and pricing inputs. That approach suits contractors handling repeated scopes across mixed PDF, CAD, and image-based drawing sets.
- +Measures lengths, areas, counts, and polylines directly on digital drawings.
- +Reusable assemblies store labor, material, waste, and markup calculations.
- +Custom reports break quantities and costs down by estimate section.
- +Plugin and API support extend integrations beyond native workflows.
- –Low-voltage templates require manual assembly-library construction.
- –Browser-based collaboration is absent from the core desktop workflow.
- –Automatic counting of device symbols is limited for dense drawings.
- –Accounting connections rely on separate plugins or configured exports.
Low-voltage subcontractors
Recurring security installation bids
Consistent bid calculations
Estimating managers
Multi-discipline drawing takeoffs
Centralized estimate structure
Show 2 more scenarios
Specialty contractors
Scope revision pricing
Faster revision estimates
Saved measurements and estimate items support revisions, additions, and deletions during project changes.
Software integration teams
Custom estimating integrations
Extended workflow connectivity
Plugins and API access connect estimate data with external reporting, accounting, or operational systems.
Best for: Fits when estimators need customizable desktop takeoff logic for recurring low-voltage scopes and mixed plan files.
More related reading
Esticom
SMBCloud estimating software used for electrical and low-voltage takeoff and bid creation.
Shared browser-based takeoff connects annotations, quantities, assemblies, estimate revisions, and bid records in one workspace.
Esticom combines cloud-based electrical estimating with a visual takeoff workspace for low-voltage contractors. Estimators can import PDF and CAD plans, count devices, measure cable runs, assign custom assemblies, and apply labor and material costs. Bid tracking, quote comparison, and shared estimate access cover common preconstruction workflows, while model-based takeoff and public API coverage remain limited.
- +Cloud access keeps plans, takeoff marks, and estimate revisions available to distributed estimating teams.
- +Visual count and measurement tools support device quantities and cable-length calculations.
- +Custom assemblies combine material, labor, waste, and markup rules for repeatable estimates.
- +Bid tracking and subcontractor proposal comparison keep quotes attached to estimate decisions.
- –Model-based takeoff is less developed than in specialist estimating suites.
- –No broad public API supports extensive automated estimating workflows.
- –Large labor and material libraries require ongoing manual maintenance.
- –Post-award project controls remain outside Esticom's estimating-focused workflow.
Best for: Fits when low-voltage estimating teams need shared browser-based takeoff and custom assembly workflows.
QuoteSoft
enterpriseTakeoff and estimating software for MEP trades with products used by electrical contractors.
QuoteSoft Electrical combines electrical and low-voltage estimate types within one project, pricing, and reporting workflow.
QuoteSoft handles low-voltage estimating through drawing takeoff, reusable assemblies, and labor and material pricing in a project file. QuoteSoft Electrical covers fire alarm, security, data, communications, and related electrical work, with outputs for bid summaries, proposals, and change estimates. Its main distinction is a combined electrical and low-voltage workflow, while external automation and browser collaboration receive less product emphasis.
- +Supports fire alarm, security, communications, and other low-voltage estimating categories.
- +Imports electronic drawings for on-screen quantity capture.
- +Reusable assemblies connect device quantities with labor and material factors.
- +Produces bid summaries, proposal documents, and change-order estimates.
- –The product lacks a clearly documented public API for custom automation.
- –Its Windows-based workflow limits browser-native collaboration.
- –Advanced symbol recognition is less central than manual drawing takeoff.
- –Database maintenance remains necessary for vendor costs and local labor assumptions.
Best for: Fits when low-voltage contractors need structured drawing takeoff and assembly-based estimates without extensive integration requirements.
Quote Express
vertical specialistSales quoting and proposal software built for security, AV, low-voltage, and custom integration projects.
Reusable estimate templates combine configurable line items, markups, and proposal formatting for recurring low-voltage work.
Quote Express targets low-voltage contractors that need a focused estimating workspace instead of a broad construction suite. Its main distinction is the combination of reusable quote templates, labor and material line items, markups, and customer records in one workflow.
Contractors can assemble estimates, adjust quantities and rates, and produce client-ready proposals without managing separate spreadsheets. The narrower feature set makes Quote Express easier to approach than enterprise estimating systems, but limits integrations and advanced plan automation.
- +Reusable quote templates reduce repeated entry for recurring installation types
- +Labor, material, markup, tax, and freight fields support practical estimate construction
- +Customer and project records keep proposal history tied to each account
- +Focused workflow requires less training than large electrical estimating suites
- –Advanced takeoff automation and drawing-based quantity extraction are limited
- –Integration coverage is narrower than enterprise construction estimating products
- –Large item catalogs require ongoing rate and product maintenance
- –Reporting and administrative controls are less extensive for multi-office teams
Best for: Fits when low-voltage contractors need repeatable estimates and client proposals without advanced drawing takeoff.
More related reading
D-Tools Cloud
vertical specialistProposal, system design, and quoting software for AV, security, and connected-system integrators.
A shared project record links the estimate, proposal, purchasing queue, change orders, and delivery workflow.
D-Tools Cloud combines estimating, proposal generation, purchasing, project coordination, and service records in one browser-based workspace for low-voltage integrators. Its differentiator is a shared catalog and project record that carries selected products, labor, client information, and change orders from sales into delivery. QuickBooks connectivity, workflow dashboards, and mobile access support operational handoffs, but drawing-based quantity extraction and highly specialized estimating depth are limited.
- +Connects estimates to proposals, purchasing, project schedules, and service records.
- +Shared catalog stores item costs, labor details, vendors, and reusable product information.
- +QuickBooks connectivity reduces duplicate customer and financial-entry work.
- +Browser and mobile access support distributed sales and installation teams.
- –Automated plan takeoff is not its primary workflow.
- –Advanced system design may require separate D-Tools capabilities.
- –Large catalogs require deliberate item, labor, and permission administration.
- –Reporting is narrower than dedicated estimating suites for detailed production analysis.
Best for: Fits when low-voltage integrators need connected estimating, proposals, purchasing, and project coordination in one cloud workspace.
Jetbuilt
vertical specialistProject sales and proposal platform for AV, security, and structured technology system integrators.
Room-and-system builder links equipment, labor, and proposal scopes to the same project record.
Jetbuilt uses a room-and-system estimating model that connects equipment selections, labor, proposals, and project records. Its core workflow covers quote assembly, product catalog management, proposal generation, purchasing, project coordination, and change tracking.
Templates and reusable assemblies reduce repeated entry for AV and low-voltage integrators with similar project structures. Coverage is narrower for automated drawing takeoff, detailed electrical estimating, and contractor-focused accounting workflows.
- +Room-based estimating links equipment, labor, and proposal scopes in one project record
- +Reusable assemblies reduce repeated configuration for recurring AV and low-voltage designs
- +Proposal, purchasing, and project workflows share estimates without repeated export steps
- +Product catalog tools support manufacturer, model, category, and cost organization
- –Automated PDF, DWG, and Revit takeoff capabilities are limited
- –Electrical labor-unit estimating is less specialized than dedicated contractor packages
- –Accounting workflows depend on external integrations rather than a full contractor ledger
- –Large catalogs require disciplined product, labor, and assembly administration
Best for: Fits when AV and low-voltage integrators need estimating connected to procurement and project delivery.
More related reading
On-Screen Takeoff
enterpriseOn-Screen Takeoff provides digital quantity measurement and plan takeoff for construction bidding.
Drawing overlay comparison aligns revisions and exposes changed, added, or removed scope areas.
On-Screen Takeoff converts digital drawings into color-coded counts, linear measurements, and area quantities. Its Conditions feature applies reusable measurement rules and exports quantified results for estimate preparation.
Drawing overlays compare revisions against earlier sheets, which helps identify scope changes without recreating the original measurements. The software focuses on quantity extraction rather than labor databases, material pricing, or complete bid assembly.
- +Color-coded Conditions separate counts, linear measurements, and areas on each drawing.
- +Drawing overlays compare revisions without rebuilding the original takeoff.
- +Excel export transfers quantified results into downstream estimate workflows.
- +Supports PDF plan takeoff and CAD file import.
- –It lacks a native labor-cost database and complete bid-pricing engine.
- –Revision comparison depends on accurate sheet alignment and disciplined file naming.
- –Many symbols and irregular details still require manual quantity extraction.
- –Accounting integration is not a core On-Screen Takeoff function.
Best for: Fits when estimators need drawing-centered quantity measurement and revision comparison more than integrated cost modeling.
eTakeoff
vertical specialisteTakeoff provides digital quantity takeoff software for construction plans and estimating workflows.
Dimension's overlay comparison aligns drawing revisions and identifies changed geometry before estimators update quantities.
eTakeoff serves estimators who need measured quantities from drawings without adopting a full bid-management suite. Its Dimension application handles PDF plan takeoff with linear, area, count, and volume measurements, plus annotation and revision comparison.
CAD drawing support, reusable assemblies, and spreadsheet exports cover core quantity workflows. Integration relies more on file exchange and Bridge connections than on a broad public API, while pricing administration and job-cost controls remain limited.
- +Accurate linear, area, count, and volume measurements support plan-based quantity work.
- +Overlay and revision comparison tools expose drawing changes without remeasuring every sheet.
- +Reusable assemblies reduce repeated measurement and calculation steps.
- +Exports support handoff to spreadsheets and external estimating workflows.
- –Pricing, tax, freight, and margin controls are not the product's central focus.
- –Bid collaboration and subcontractor proposal comparison are limited.
- –Complete bid preparation may require companion estimating software.
- –Advanced automation requires careful configuration of assemblies and measurement rules.
Best for: Fits when electrical and low voltage estimators need controlled drawing measurement with exports into separate estimating workflows.
How to Choose the Right low voltage estimator software
STACK, Countfire, PlanSwift, Esticom, and QuoteSoft cover drawing takeoff, symbol counting, configurable assemblies, and shared estimating workspaces. Quote Express focuses on reusable quote templates, while D-Tools Cloud and Jetbuilt connect estimates with proposals, purchasing, rooms, equipment, and project delivery.
On-Screen Takeoff and eTakeoff center on drawing measurement and revision comparison rather than complete labor and bid-pricing systems. The guide compares these tools by takeoff depth, assembly logic, collaboration model, integration surface, and coverage of low-voltage estimating workflows.
What Low Voltage Estimator Software Handles
Low voltage estimator software converts digital plans, symbols, measurements, equipment selections, and installation assumptions into quantities, assemblies, labor calculations, material totals, markups, and proposals. PlanSwift stores reusable formulas and assemblies, while Countfire applies selected drawing symbols across multiple pages and exports the resulting counts.
The category ranges from focused drawing measurement tools to connected project systems. STACK synchronizes drawing revisions, annotations, measurements, and estimate assemblies across browser workspaces, while D-Tools Cloud links estimates with proposals, purchasing, schedules, and service records.
Evaluation Criteria for Low Voltage Estimator Software
Drawing takeoff determines how quickly an estimator can convert plans into counts, lengths, areas, and device quantities. Countfire automates symbol counts, while PlanSwift converts measured drawing objects into reusable estimate logic.
Assembly handling, revision control, collaboration, and project integration determine what happens after measurement. STACK connects revisions and assemblies in shared workspaces, while D-Tools Cloud carries estimate records into proposals, purchasing, and service coordination.
Drawing takeoff and quantity capture
Countfire applies a selected symbol across multiple drawing pages and exports editable results. PlanSwift measures counts, lengths, areas, and polylines directly on digital drawings.
Shared revision and annotation control
STACK synchronizes drawing revisions, annotations, measurements, and estimate assemblies across browser workspaces. Esticom keeps plan marks, quantities, estimate revisions, and bid records in one shared workspace.
Reusable assembly and estimate logic
QuoteSoft Electrical combines electrical and low-voltage estimate types within one project and reporting workflow. Quote Express uses reusable templates with line items, labor fields, material fields, markups, tax, and freight.
Project delivery integration
D-Tools Cloud links estimates with proposals, purchasing queues, change orders, schedules, and service records. Jetbuilt connects room and system scopes with equipment, labor, procurement, and project delivery.
Drawing revision comparison
On-Screen Takeoff overlays aligned drawing revisions and identifies changed, added, or removed scope areas. eTakeoff uses Dimension overlays to identify changed geometry before quantities are updated.
Automation and integration surface
Esticom provides browser access but lacks a broad public API for automated estimating workflows. QuoteSoft also lacks a clearly documented public API, which limits custom connections to external systems.
How to Match Takeoff Architecture to Estimating Workflow
The main choice is between drawing-first tools, configurable estimating engines, and connected project systems. Countfire and On-Screen Takeoff prioritize measurement, while PlanSwift and STACK carry quantities into repeatable estimate structures.
Project scope also determines the required collaboration and integration model. Browser workspaces suit distributed estimating, desktop tools suit controlled local configuration, and D-Tools Cloud or Jetbuilt suit companies that need estimates connected to delivery records.
Choose measurement-first or project-connected software
Select Countfire, On-Screen Takeoff, or eTakeoff when the primary task is extracting quantities from drawings. Select D-Tools Cloud or Jetbuilt when estimates must remain connected to proposals, purchasing, equipment, schedules, or service records.
Choose automatic counting or configurable estimating logic
Countfire applies a selected symbol across drawing pages with limited downstream bid calculation. PlanSwift uses conditions, formulas, and reusable assemblies for estimators who need to encode recurring labor and material assumptions.
Match collaboration to deployment requirements
STACK and Esticom provide shared browser workspaces for distributed estimators working on active bids. PlanSwift and QuoteSoft use desktop-centered workflows that suit local control but do not provide the same browser collaboration model.
Define the required revision workflow
Choose On-Screen Takeoff or eTakeoff when overlay comparison and controlled remeasurement are central requirements. Choose STACK when revisions must also synchronize with annotations, measurements, and estimate assemblies.
Set an integration boundary before selection
D-Tools Cloud and Jetbuilt extend estimate records into purchasing and delivery activities. Esticom and QuoteSoft provide less documented API access, so custom automation requires a narrower integration plan.
Audience Fit by Low Voltage Estimating Workflow
Low-voltage contractors with recurring drawing-based bids need different controls from integrators selling room-based systems and managing equipment procurement. STACK, PlanSwift, and QuoteSoft address estimate construction, while D-Tools Cloud and Jetbuilt extend the record beyond the bid.
Focused measurement tools serve estimators who already use separate pricing or job-cost systems. Countfire, On-Screen Takeoff, and eTakeoff fit that boundary because their core workflows center on drawing quantities and exports.
Distributed low-voltage estimating teams
STACK keeps drawing revisions, annotations, measurements, and assemblies synchronized in shared browser workspaces. Esticom provides a similar shared workspace for plan marks, quantities, estimate revisions, and bid records.
Contractors with recurring assembly-driven scopes
PlanSwift stores labor, material, waste, markup, conditions, and formulas in reusable assemblies. QuoteSoft supports fire alarm, security, communications, and other low-voltage estimate categories in one workflow.
AV and systems integrators managing delivery
Jetbuilt links rooms and systems with equipment, labor, proposal scopes, procurement, and project delivery. D-Tools Cloud connects estimates with purchasing, schedules, change orders, and service records.
Estimators using a separate bid-pricing system
Countfire exports symbol counts and provides linear measurement tools for cable and pathway quantities. On-Screen Takeoff and eTakeoff support controlled drawing measurement without serving as complete labor-cost and bid-pricing systems.
Common Low Voltage Estimating Software Selection Mistakes
Selection errors often come from treating drawing measurement, estimate construction, and project delivery as the same software requirement. Countfire and eTakeoff can produce accurate quantities while leaving labor, material pricing, markup, and proposal work to another system.
A second error is assuming that shared access or reusable assemblies guarantees integration depth. STACK provides shared revision control, while QuoteSoft and Esticom have limited documented API coverage for custom automation.
Choosing a takeoff tool as a complete bid-pricing system
Countfire exports counts but does not provide a full assembly, labor, or job-cost database. On-Screen Takeoff lacks a native labor-cost database and complete bid-pricing engine, so downstream estimating systems must be included.
Assuming reusable templates contain the required low-voltage logic
PlanSwift requires manual construction of low-voltage templates and assemblies. Quote Express reuses line items and proposal formats but provides limited drawing-based quantity extraction.
Ignoring deployment constraints for distributed estimators
PlanSwift and QuoteSoft use Windows-centered workflows without browser-native collaboration. STACK and Esticom provide shared browser access for teams working on the same active bids.
Treating integration claims as equivalent to documented automation access
D-Tools Cloud connects estimates with purchasing, schedules, and service records. Esticom and QuoteSoft lack broad, clearly documented public APIs for extensive automated estimating workflows.
How We Selected and Ranked These Tools
We evaluated ten low voltage estimator software products across takeoff, assemblies, collaboration, project workflow coverage, and integration capabilities. Features carried 40% of each overall score.
Ease of use carried 30%, and value carried 30%. STACK ranked first because shared cloud takeoff workspaces synchronize drawing revisions, annotations, measurements, and estimate assemblies while custom assemblies connect quantities with labor and material assumptions.
Frequently Asked Questions About low voltage estimator software
Which low voltage estimator software is best for drawing-based device counts and cable measurements?
How do low voltage estimator tools connect with accounting and external systems?
When should a contractor choose a cloud workspace over desktop takeoff software?
What security and administration capabilities should buyers check before deployment?
How can an estimator migrate drawings, assemblies, and historical estimates into a new system?
Which tools support estimating beyond measured drawing quantities?
Where does automated takeoff fall short for low voltage work?
What is a practical way to start using low voltage estimator software on recurring bids?
Conclusion
After evaluating 10 tools, STACK stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.
Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
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