Design-Build

GraphQL API (plus a companion self-serve web estimating tool) providing live pricing for 68 million construction material, labor, and equipment cost data points across 3,000+ US counties, refreshed daily from national retailers and local suppliers. Embedded by third-party construction estimating platforms including Buildxact, STACK Construction Technologies, and CostCertified rather than sold mainly as a standalone end-user app.

Industry-standard vector graphics application for creating logos, diagrams, presentations, and design visualizations. Widely used in AEC for architectural diagrams, floor plan overlays, presentation graphics, and client-facing design communication. Available as desktop application, web-based editor, and iPad app with cloud document collaboration.

AI takeoff platform that reads PDF construction drawings (architectural, structural, civil, and MEP sheets) and extracts trade-specific quantities across 15+ trades, including HVAC, electrical, plumbing, concrete, steel, paving, and landscaping. Offered as a self-service mode (claimed ~10-minute turnaround, 90% feature-capture accuracy) or a QA-reviewed "done-for-you" service (24-72 hour turnaround, claimed accuracy within ±1% of in-house takeoffs). Operated by Attentive.ai, which also sells a separate per-property takeoff product for landscaping/paving/snow field services (formerly branded Automeasure) and has recently launched a BIM CoPilot modeling service.

Client-side beam analysis tool that calculates reactions, shear forces, bending moments, and deflection for cantilever, simply supported, and continuous beams. Generates visual diagrams and validates against AISC 360, IBC Chapter 16, and ADA requirements. Supports steel, wood, and concrete with live/dead load combinations.

Cloud-native platform for BIM collaboration and coordination that centralizes issue management, clash detection, and model quality assurance. Integrates with all major BIM tools (Revit, Navisworks, ARCHICAD, Tekla) via open BCF standards and provides a unified Common Data Environment (CDE) for multidisciplinary teams.

Comprehensive cost estimation tool for concrete projects that calculates material, labor, delivery, reinforcement, and site prep costs. Supports multiple project types (slabs, walls, footings, decorative), regional pricing variations, and provides detailed cost breakdown with contingency planning.

Free web-based calculator that estimates concrete volume required for staircase construction. Supports multiple calculation methods: waist slab (for angled stairs with throat depth), rectangle method (for simplified step-by-step estimation), and inclined slab method. Outputs results in cubic yards, cubic feet, and cubic meters with waste factor adjustments.

Free web-based calculator that estimates construction project costs using parametric, assembly, and square-foot estimating methods. Breaks down hard costs, soft costs (site development, professional services), and contingency reserves by design phase. Supports multiple estimation approaches from conceptual design through construction documents.

Enterprise resource planning (ERP) platform designed specifically for architecture, engineering, and consulting firms. Integrates project management, financial management, CRM, and resource planning into one cloud-based or on-premises system to manage the complete project lifecycle from pursuit to payment.

Cloud-based SaaS platform that automates pre-construction processes by centralizing communication, planning, budgeting, and scheduling between property owners, architects, engineers, and contractors from initial design through construction administration.

Cloud-based platform that uses 45+ years of ERA-5 climate data and Monte Carlo simulation to quantify weather-related schedule delays and provide 92.3% accurate risk modeling for construction projects. Integrates with P6, Asta, Microsoft Project, and Oracle Primavera Cloud.

Free web-based calculator for assessing embodied carbon impact of building materials. Input material type, quantity, and sourcing region to calculate total CO2 equivalent emissions. Uses Environmental Product Declaration (EPD) data and ISO 14040/44 LCA standards. Supports concrete, steel, wood, aluminum, insulation, masonry, and 20+ material categories. Includes regional adjustment factors for energy mix and transportation.

Free interactive lookup table for building material densities. Covers 75+ construction materials including metals (steel, copper, aluminum), masonry (brick, concrete, stone), wood species, soils, aggregates, and finishes. Displays densities in kg/m³ and lb/ft³ simultaneously. Essential for load calculations, weight estimation, material selection, and structural analysis.

AI building-code research software that returns project-specific compliance requirements in minutes, with step-by-step reasoning, full compliance decision trees, and direct citations to the exact code sections. Covers state-adopted IBC, IRC, and IEBC, plus IFC (fire), IMC (mechanical), IPC (plumbing), IECC (energy), NEC/NFPA (electrical), and ADA/ANSI A117.1 (accessibility), including amendments for all 50 U.S. states.

Computer-vision and OCR platform that reads uploaded electrical single-line diagrams, P&ID schematics, riser diagrams, and panel schedules — including scanned or handwritten legacy drawings — automatically detecting, counting, and labeling components, then mapping them to part numbers to produce a structured, ERP-ready bill of materials. Engineers review every AI-labeled component overlaid on the source diagram and can relabel or remove detections before export. Backed by Techstars (Alabama EnergyTech Accelerator, Fall 2025 cohort).

AI platform that reads uploaded architectural drawings with computer vision to automatically generate construction cost estimates, takeoffs, 3D models, and scenario-based value-engineering analysis for real estate developers, general contractors, and investors.

Cloud platform from Qualis Flow Ltd (UK) that digitizes paper and digital delivery dockets, goods-received notes (GRNs), and waste transfer notes (WTNs) at the point of capture, then cross-checks them against purchase orders and invoices to give contractors and developers real-time materials, waste, and carbon data for cost reconciliation and sustainability reporting.

AI platform that reads structural PDF plan sets and auto-detects concrete elements (footings, walls, columns, slabs), expanding each into priced concrete, formwork, and rebar line items for concrete subcontractor estimators. Y Combinator-backed (Summer 2026 / S26 batch); founded 2026 by ex-Amazon and ex-Airbnb engineers, currently a 2-person team.

Determine how long it takes for solar panels to pay for themselves and estimate total return on investment. Accounts for system costs, local electricity rates, federal/state incentives, panel degradation, inverter replacement, and electricity rate inflation over 25 years.

Cloud construction software combining digital quantity takeoff and estimating (Takeoff & Estimate) with field collaboration, document control, and daily reporting for the build phase (Build & Operate). Floor Plan AI auto-detects doors, windows, rooms, and walls to generate a baseline takeoff, and STACK Assist is a chat-based AI assistant that answers plan-specific questions with sheet references. Founded 2008 as Cloud Takeoff; rebranded to STACK Construction Technologies.

Free web-based calculator that checks stairway headroom clearance against building codes. Verifies compliance with IBC Section 1011.3 (80 inches standard, 78 inches for spiral), IRC R311.7.2 (residential), and OSHA requirements. Calculates required floor opening size, warns of violations, and handles alternating tread stairs.

Free web-based calculator that determines the correct transformer size in kilovolt-amperes (kVA) based on electrical load parameters. Supports single-phase and three-phase systems, accounts for demand factors and diversity, and applies AEC-standard design margins for future load growth.

XBuild is an AI estimating platform for residential trade contractors — launched first for roofing — where users describe a project via an AI chat interface, or import measurement reports (EagleView, GAF QuickScope, Hover, Roofr) and jobsite photos, and the platform generates a standardized, editable estimate and a branded, shareable proposal (insurance-ready or retail Good/Better/Best options) with e-signature and Stripe-based deposit collection.