Best TestFit Alternatives (2026)
Updated November 2, 2026. Independent editorial; how we research.
TestFit, from Dallas-based TestFit, Inc., is a site feasibility platform: its generative engine lays out buildings, parking and roads on a real site in 3D, with automatic takeoffs, typologies from multifamily to industrial, data centers, retail, hotels and parking, and exports to Revit, AutoCAD, SketchUp, Excel and PDF. Pricing is published: Parking Solver at $195 a month with unlimited users plus paid add-ons for zoning data, a live pro forma and an MCP connection, and the full Site Solver with generative design from $15,000 a year. The reasons people look elsewhere follow from that structure. The jump from the monthly entry plan to annual Site Solver is steep, zoning data and the pro forma cost extra on the entry plan, no free trial is listed, and the tool covers the feasibility stage only, so teams still need other software to find sites upstream and design them downstream.
Pick the replacement by the question you use TestFit to answer. If it is "what massing fits here, and how does it perform for sun, wind and daylight", an architect-oriented design tool is the closer match. If it is "does this deal pencil", look for massing tied to a live financial model at a monthly price. If it is "what does the zoning allow on this lot", a zoning capacity tool answers that without a full layout. Teams outside the US should check data coverage first. And if the hard part is finding sites worth testing, that is a parcel search job that comes before any test fit.
TestFit and its alternatives at a glance
| Tool | Starting price | Free trial | Best for | Deployment |
|---|---|---|---|---|
TestFit | $195/month | No | Developers, Architects | Cloud |
Forma Site Design | From $59/month | Yes | Architects, Urban Planners | Cloud |
G Giraffe | US$45/month | Yes | Developers, Designers | Cloud |
Deepblocks | $99.99/month | No | Developers, Investors | Cloud |
Archistar | Free; paid plans from A$79.17/month billed annually | No | Developers, Architects | Cloud |
Gridics | Contact for pricing | No | Municipal Planners, Developers | Cloud |
Plotzy | $180/month | Yes | Real Estate Brokers, Land Acquisition Teams | Cloud |
Top TestFit Alternatives
Cloud early-stage site design (ex-Spacemaker): rapid massing plus AI sun, wind, noise, and carbon analysis.
Why pick it over TestFit: Forma Site Design, Autodesk's successor to Spacemaker, is the natural pick for architects and design-led developers: automatic site setup with terrain and surrounding buildings, manual or generated massing with live area metrics, and analysis of sun hours, daylight, wind, noise, views, microclimate and total carbon, with Revit, Rhino, Dynamo, ArcGIS and IFC connections. It is included at no extra cost with the Autodesk AEC Collection, is also accessible through Revit and Forma for Buildings subscriptions, and offers a free trial. It is lighter than TestFit on parking automation and live pro forma economics, and it delivers the most inside the Autodesk ecosystem.
Collaborative map-based design: GIS data, 3D massing, and real-time feasibility for development sites.
Why pick it over TestFit: Giraffe is the closest all-round match at a fraction of the price: a map-based workspace with zoning, ownership, infrastructure and environmental layers, AI that finds parcels and reads broker PDFs, live layout calculations for areas, unit counts and parking, and links to feasibility and cash flow models, with CAD, BIM and Excel exports. Core costs US$45 a month after a two-week free trial with no card, and Teams is US$1,500 per user per year. Organizations larger than 5 staff move to enterprise pricing, and it has no dedicated parking solver of the kind TestFit sells on its own.
Development feasibility software for US cities: live 3D massing beside an editable pro forma, priced by the number of cities.
Why pick it over TestFit: Deepblocks DEV produces feasibility studies for US cities with instant 3D massing next to a financial model, priced by the number of cities: $99.99 a month for about 5 cities up to $499.99 for about 30, with cities not yet built added on request within 0 to 3 business days. It suits small development teams who want massing plus numbers without a $15,000 annual contract. No free trial is listed, usage is capped by city count, and its AIM site selection product is still listed as coming soon.
AI site feasibility: zoning analysis plus generative design that produces compliant 3D building concepts.
Why pick it over TestFit: Archistar pairs zoning, planning-rule and environmental constraint data with a generative design engine that produces compliant 3D concepts for duplexes, townhouses, subdivisions, apartments, commercial and mixed-use schemes, and its free tier includes generative design. Paid plans run A$79.17 to A$495.83 a month billed annually (A$95 to A$595 monthly), with no contract. The catch for US teams is coverage: feasibility plans cover Australia's states and territories, with other countries by direct discussion, so it is the TestFit alternative for Australian developers.
Zoning intelligence platform - parcel-level zoning data, 3D development capacity analysis, and municipal code tools.
Why pick it over TestFit: Gridics approaches feasibility from the zoning side: its rules engine converts ordinances into parcel-level data, ZoneIQ shows a site's zoned development potential in real-time 3D, a Zoning Data API exposes hundreds of parcel-level data points, and expert-prepared Property Zoning Reports answer feasibility questions. Choose it when the binding constraint is what the code allows rather than how a parking field lays out. Coverage depends on which municipalities Gridics has calibrated, with South Florida cities prominent, and pricing is by demo.
AI parcel search with two-level zoning, owner contacts and exports across 150M+ US parcels.
Why pick it over TestFit: Plotzy sits upstream of a test fit: it finds the parcels worth testing. Search 150M+ parcels across 3,200+ counties by permitted use, lot size and land use with two-level zoning on every parcel, check FEMA flood layers and look up owners, then take the shortlist into a massing tool. It does not generate site plans, massing, unit counts or yield studies, it is still labeled beta, and at $180 to $300 a month it is an addition to a feasibility tool rather than a replacement for one.
Frequently Asked Questions
How much does TestFit cost?
Parking Solver is $195 a month billed monthly with unlimited users, plus optional Site Intelligence (+$150 a month), Pro Forma (+$170) and MCP Connection (+$100) add-ons. Site Solver starts at $15,000 a year and Site Solver Portfolio at $20,000 a year, both billed annually. The pricing page does not list a free trial.
What is the cheapest TestFit alternative?
Giraffe Core costs US$45 a month and includes 3D modelling, layered maps and its calculation engine, after a two-week free trial. Deepblocks starts at $99.99 a month for about 5 US cities. In Australia, Archistar has a free tier that includes generative 3D design.
Is there a free alternative to TestFit?
Archistar's free tier includes generative 3D design, but feasibility coverage is Australia only. Giraffe and Forma Site Design offer free trials, and Forma Site Design is included at no extra cost for Autodesk AEC Collection subscribers.
Can any of these tools find sites as well as test them?
Giraffe includes AI that finds parcels matching your criteria, and Deepblocks lists a site selection product as coming soon. For nationwide site sourcing by zoning and permitted use with owner lookup, teams pair a parcel search tool such as Plotzy with their feasibility software.
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