SPEC Toolbox
SPEC Toolbox is a Melbourne-based construction technology SaaS that automates structural engineering calculations for mass timber buildings. Its cloud platform integrates international building standards and 35+ manufacturer catalogs, serving structural engineers across Australia, New Zealand, Europe, the UK, and North America.
- Company typePrivate
- Founded2022
- HeadquartersMelbourne, Australia
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What SPEC Toolbox does
SPEC Toolbox (formerly CLT Toolbox) is a Melbourne-headquartered construction technology company that provides a cloud-based SaaS platform automating structural engineering calculations for mass timber and modern sustainable building materials. The platform embeds international building standards (AS1720 for Australia/New Zealand, Eurocode 5 for Europe, CSA O86 for Canada, and NDS for the United States) and integrates catalogs from 35+ verified timber product suppliers, enabling structural engineers to design cross-laminated timber (CLT), glulam (GLT), dowel/screw/bracket connections, light-frame, ribbed deck, timber-concrete composite (TCC) floors, acoustics, shear walls, and fire-rated assemblies within a single verified workflow. Founded in 2022 by structural engineers Adam Jones and Ringo Thomas, the company operates distributed development teams across Melbourne, Addis Ababa (Ethiopia), and Java (Indonesia), and serves markets in Australia, New Zealand, Europe, the UK, the United States, and Canada.
The product is modular and distributed via a freemium SaaS model: a free tier provides basic calculators and limited supply-chain access, a Pro tier is priced at A$2,500 per license per year (or A$750 quarterly), and an Enterprise tier offers unlimited licenses, advanced user management, and dedicated onboarding. Go-to-market combines product-led growth (self-serve sign-up via app.spectoolbox.com) with a sales-led Enterprise motion featuring "Book a Demo" and "Contact Us" calls to action. Marketing is content-driven through technical blog articles, live webinars, a community forum on Circle.so, YouTube product release videos, and partner testimonials. The company has accumulated over 6,000 user signups and 35+ integrated suppliers across its four regional markets, and has raised approximately A$5.5 million in disclosed funding, including a A$1.5M seed round in 2023 led by Archangel Ventures and a A$3M Pre-Series A round in January 2026 co-led by Black Nova and Investible.
SPEC Toolbox firmographics
Firmographics- Name
- SPEC Toolbox
- Legal name
- SPEC Toolbox
- Website
- https://clttoolbox.com.au
- Company type
- Private
- Founded year
- 2022
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- SPEC Toolbox is a Melbourne-based construction technology SaaS that automates structural engineering calculations for mass timber buildings. Its cloud platform integrates international building standards and 35+ manufacturer catalogs, serving structural engineers across Australia, New Zealand, Europe, the UK, and North America.
- Ownership category
- akta.pro rank
Where SPEC Toolbox is headquartered
LocationHeadquarters
- HQ city
- Melbourne
- HQ country
- Australia
- HQ region
- Oceania
Offices3 records
Markets served
SPEC Toolbox business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure
Revenue model
- Software Subscription (Pro & Enterprise): SaaS subscription model with Free tier (basic features), Pro tier at $2,500 AUD/year or $750 AUD/quarter, and Enterprise tier with unlimited licenses and advanced support. Revenue from license subscriptions to structural engineering software platform.
- Freemium / Free Tier: Free tier provides basic CLT, basic GLT, core screw calculation, hangers design, and access to free-tier supply chain partners. Serves as acquisition funnel for Pro and Enterprise conversions.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Free | Free tier for individuals and small teams starting their journey with mass timber design |
| Subscription | Annual | Pro subscription for structural engineers and teams requiring advanced features |
| Subscription | Multi-year contract | Enterprise tier for companies requiring multiple license deals across their organization |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels7 records
SPEC Toolbox product offering
Product offeringCore offering
SPEC Toolbox provides a cloud-based SaaS platform that automates structural engineering calculations for mass timber and modern construction materials, integrating built-in international building standards (AS1720, Eurocode 5, CSA O86, NDS) with manufacturer product catalogs from 35+ suppliers. The platform turns days of manual structural calculation into minutes of automated analysis, supporting calculators for CLT, GLT, screws, dowels, brackets, light-frame, ribbed decks, timber-concrete composites, acoustics, shear walls, and fire design.
Product overview
SPEC Toolbox (formerly CLT Toolbox) is a construction technology platform providing cloud-based structural timber design software for engineers. The platform offers a modular portfolio centered on its core design engine, which integrates built-in international building standards (AS1720, Eurocode 5, CSA O86, NDS) with manufacturer product catalogs. The product suite includes dedicated calculator modules for CLT (Cross-Laminated Timber), GLT (Glulam), dowel/bolt connections, timber screws, brackets, light-frame construction, ribbed deck design, timber-concrete composite (TCC) floors, acoustic design, and shear wall analysis. The platform bridges the supplier-designer gap by integrating over 35 product supplier catalogs directly into calculations. Access is tiered: Free (basic calculators with limited supply chain), Pro ($2,500 AUD/year for full-feature access with advanced modules and pro-tier suppliers), and Enterprise (unlimited licenses with dedicated support). The company expanded from its original CLT focus to eight product categories following a 2024 rebrand, and now serves markets in Australia/New Zealand, Europe, North America, and Canada.
Differentiator
Problem solved
Functional benefit
Products and services
- SPEC Toolbox Platform Cloud-based structural timber design platform combining built-in international standards (AS1720, Eurocode 5, CSA O86, NDS) with manufacturer product catalogs to automate engineering calculations for mass timber and modern construction materials.
Quantifiable outcome
- Turns days of manual crunching into minutes of automated structural analysis
- +2 more outcomes
Companies that use SPEC Toolbox
Customer profileSegments3 records
Ideal customer profiles3 records
SPEC Toolbox technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
SPEC Toolbox partnerships and signals
Strategic signalPartnerships
33 partnerships are on record, tiered core.
- Hyne TimbercoreMajor Australian timber manufacturer integrated into SPEC Toolbox supply chain. Featured prominently in partner section with logo and dedicated partner page. Hyne provides structural timber products catalogued in the platform.
- BinderholzcoreEuropean mass timber manufacturer integrated into the platform's supply chain. Featured supplier with logo and dedicated partner page listing products in the design tool.
- RothoblaascoreFastening and structural hardware manufacturer integrated as a supplier partner. Products include fasteners, screws, and brackets available within the design platform.
- Simpson Strong-TiecoreGlobal leader in structural hardware integrated into the platform. Provides connection hardware specifications for timber design calculations.
- WürthcoreFastening systems manufacturer integrated as a supplier partner. Products listed within the timber design calculation tools.
- KLH SuppliercoreKLH (KLH Massivholz) European CLT manufacturer integrated as a supply chain partner on the platform.
- XLAMcoreAustralian CLT manufacturer integrated as a supply chain partner. Featured in partner section with logo and dedicated partner page.
- AnzorcoreAustralian timber hardware supplier integrated into the platform. Featured supplier partner with dedicated listing.
- EuroteccoreEuropean timber construction hardware supplier. Testimonial featured on website: 'Creating solutions that improve the wood construction industry is one of the core goals Eurotec and SPEC Toolbox have in common.'
- Timber Unlimited NZcoreNew Zealand timber supplier partnership including free advanced timber design software access for engineers in New Zealand. Partnered to launch free design tools for NZ engineers.
- Batten & CradlecoreFlooring systems manufacturer and supplier partner integrated into the platform. Featured supplier with logo displayed on homepage.
- Red StagcoreNew Zealand mass timber manufacturer integrated into the supply chain. Products available within the design platform.
- ProlamcoreAustralian glulam and structural timber manufacturer partner. Products integrated into design calculations.
- ASHcoreTimber hardware and accessories supplier integrated into the platform's supply chain catalog.
- KlimascoreEuropean timber connection hardware supplier integrated into the platform. Products available in design tools.
- NeXTimbercoreAustralian mass timber and engineered wood product supplier integrated as a partner.
- PitzlcoreTimber connection hardware manufacturer integrated as a supplier partner.
- SPAXcoreFastener manufacturer with products integrated into the timber design platform.
- SIHGAcoreTimber hardware and fixings supplier integrated into the platform's product catalog.
- Schmid Schrauben HainfeldcoreAustrian screw and fastener manufacturer integrated into the platform.
- MercercoreTimber supplier partner featured on the Canada region of the platform.
- Nordic StructurescoreNordic timber structures supplier partner listed in the Canada region.
- FrerescoreUS mass timber manufacturer integrated into the European/US region of the platform.
- SmartlamcoreUS-based mass timber manufacturer and partner on the platform.
- SterlingcoreStructural timber products supplier integrated into the platform.
- Bi-MirthcoreTimber hardware supplier partner listed in Canada and US regions.
- ESSVEcoreFastening solutions supplier partner on the platform.
- KalvastacoreTimber connection hardware supplier partner in the Canada region.
- MTTcoreMass timber technology supplier partner listed in Canada region.
- RocketcoreTimber hardware supplier partner in Canada region.
- SodracoreSwedish timber and forest products supplier partner.
- THEURLcoreTimber construction hardware supplier partner.
- XLAM DolomiticoreItalian CLT manufacturer and supplier partner integrated into the platform.
Scale indicators6 records
Recent moves9 records
Expansion highlights6 records
SPEC Toolbox competitors and assessment
Company assessmentBroad incumbents
- SCIA Engineer (Nemetschek Group): SCIA Engineer is a multi-material structural analysis software with timber modules included in the broader Nemetschek AEC portfolio. Overlaps with SPEC Toolbox on structural engineering calculations but competes as part of a much larger AEC software suite (Graphisoft, Vectorworks, Bluebeam).
- Computers & Structures (SAP2000 / ETABS): SAP2000 and ETABS are industry-standard structural analysis suites used by virtually every structural engineering firm. While not timber-specialized, they are the incumbent tools SPEC Toolbox must displace or integrate with; their broad scope and deep BIM integrations make them the dominant alternative for practicing structural engineers.
- Tekla Structures (Trimble): Tekla Structures is a leading structural BIM platform with timber detailing capabilities and deep integration into Trimble's construction ecosystem. Competes with SPEC Toolbox for engineering and detailing workflows in mass timber projects, with much broader scope and an established enterprise install base.
- RISA Technologies: RISA produces 3D structural analysis software (RISA-3D, RISAFloor) widely used in US engineering firms for steel, concrete, and timber design. Comparable to SPEC Toolbox as a structural engineering calculation tool, with a much broader material scope but less mass timber specialization and no supplier integration.
Direct peers
- Dlubal Software (RFEM): Dlubal's RFEM is a 3D structural analysis software with dedicated timber design modules (including CLT/GLT) per Eurocode, AS/NZS, and NDS. Directly competes with SPEC Toolbox for structural engineers designing mass timber buildings, with a broader scope (steel, concrete, membranes) but less supplier integration.
- Cadwork: Cadwork is a specialist timber construction CAD/CAM platform widely used in European CLT/glulam manufacturing and engineering. Comparable to SPEC Toolbox in its deep timber specialization, but oriented upstream toward manufacturing/joineries rather than engineer-facing specification.
- Dietrich's: Dietrich's is a long-established timber engineering and frame construction CAD software serving European manufacturers and engineers. Comparable to SPEC Toolbox for timber-framed and mass timber design, with stronger manufacturing-shop focus and weaker end-engineer specification workflow.
- S-FRAME Software: S-FRAME delivers structural analysis software with timber design capabilities and code-checking modules. Overlaps with SPEC Toolbox on engineer-facing structural calculations across multiple materials, though S-FRAME is more general-purpose and less supplier-integrated.
- IDEA StatiCa: IDEA StatiCa specializes in structural connection design, with timber connections as a growing module. Highly comparable to SPEC Toolbox's connection modules (dowels, screws, brackets) and competes for the same engineer persona, with a different scope (connections only) but similar cloud-native approach.
- SEMA (SEMA GmbH): SEMA is a specialist timber engineering and stair/railing CAD software with strong penetration in European timber manufacturing. Comparable to SPEC Toolbox in its timber-only focus and engineer/manufacturer audience, but oriented more toward manufacturing output than design specification.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
SPEC Toolbox social profiles
Digital presenceSPEC Toolbox financial estimates
Financial estimateRevenue estimate
Valuation estimate
SPEC Toolbox leadership team
Management profileNumber of profiles
Profiles4 records
SPEC Toolbox funding detail
Funding detailFunding overview
Funding rounds3 records
Investors14 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SPEC Toolbox M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SPEC Toolbox
What does SPEC Toolbox do?
SPEC Toolbox provides a cloud-based SaaS platform that automates structural engineering calculations for mass timber and modern construction materials, integrating built-in international building standards (AS1720, Eurocode 5, CSA O86, NDS) with manufacturer product catalogs from 35+ suppliers. The platform turns days of manual structural calculation into minutes of automated analysis, supporting calculators for CLT, GLT, screws, dowels, brackets, light-frame, ribbed decks, timber-concrete composites, acoustics, shear walls, and fire design.
Is SPEC Toolbox a public or private company?
SPEC Toolbox is a private company. It is classified as venture growth investor backed and is currently operating.
When was SPEC Toolbox founded?
SPEC Toolbox was founded in 2022. It employs 11 to 50 people.
Where is SPEC Toolbox based?
SPEC Toolbox is headquartered in Melbourne, Australia, in the Oceania region.
How does SPEC Toolbox make money?
Two revenue lines are on record. Software Subscription (Pro & Enterprise) is the primary driver. The others are freemium / Free Tier.
Who are SPEC Toolbox's main competitors?
Broad incumbents on record are SCIA Engineer (Nemetschek Group), Computers & Structures (SAP2000 / ETABS), Tekla Structures (Trimble) and RISA Technologies. Direct peers are Dlubal Software (RFEM), Cadwork, Dietrich's, S-FRAME Software, IDEA StatiCa and SEMA (SEMA GmbH).
Does SPEC Toolbox have an API?
No public API is recorded for SPEC Toolbox.