--- title: "The Best Real Estate Feasibility Analysis Software For Architects In 2026" description: "Honest comparison of the top real estate feasibility analysis tools for architects and developers — Atlasly, Autodesk Forma, TestFit, Archistar, and spreadsheets. What each does well, what each misses, and how to pick." canonical: https://atlasly.app/blog/best-real-estate-feasibility-analysis-software-ai-architects published: 2026-04-21 modified: 2026-04-21 primary_keyword: "best real estate feasibility analysis software" target_query: "best real estate feasibility analysis software for architects" intent: commercial --- # The Best Real Estate Feasibility Analysis Software For Architects In 2026 > Honest comparison of the top real estate feasibility analysis tools for architects and developers — Atlasly, Autodesk Forma, TestFit, Archistar, and spreadsheets. What each does well, what each misses, and how to pick. ## Quick Answer The best real estate feasibility analysis software for architects depends on what you're optimising for. Atlasly (from £0 free) leads on UK site intelligence — real flood zones, listed buildings, planning history, plus CAD/BIM exports. Autodesk Forma is best for generative massing + sun/wind analysis on confirmed sites. TestFit is best for rapid mid-rise residential layout testing. Archistar has the strongest Australian planning coverage. Spreadsheets still win for pure financial modelling. Most practices use Atlasly for the evidence layer + one of the others for design iteration. ## Introduction Real estate feasibility analysis has changed more in the last 18 months than the previous 18 years. AI tools now do in minutes what used to take an intern a week — flood risk checks, zoning interpretation, massing studies, walkability scoring, cost estimation. The problem: every vendor claims to do everything. In reality each of these tools has one thing it's genuinely excellent at and several things that are passable at best. This article is written from practice — it compares the five categories of feasibility tools real architects and developers use in 2026, without fake rankings or sponsor bias. The team behind this article builds Atlasly, so we're biased there; we'll call out where Atlasly falls short and where others do the job better. ## The five categories you actually need A real feasibility study answers five questions. Different tools excel at different ones: 1. **Can we build here at all?** (Planning + statutory constraints) — Atlasly, PlanningBot, manual research 2. **How much can we build?** (Zoning envelope, FAR, buildable area) — TestFit, Spacemaker, Archistar, Atlasly 3. **What will it perform like?** (Sun, wind, noise, daylight) — Autodesk Forma, Atlasly (partial), specialist consultants 4. **What will it cost / earn?** (Cost estimation, GDV, IRR) — Spreadsheets, Argus, Buildora IQ 5. **What does the site allow aesthetically?** (Context, massing studies) — Forma, SketchUp + manual, Atlasly (for 3D context) No single tool answers all five well. The practices doing this best use 2-3 tools in combination. ## Atlasly — where it leads and where it doesn't **Leads on:** UK site intelligence (real Environment Agency flood zones, Historic England listed buildings, planning.data.gov.uk history, NPPF + London Plan citations with legal status), CAD/BIM exports with georeferencing (DXF, DWG, SKP, IFC, GLB), walkability scoring with persona weighting, AI chatbot trained on 40+ urban design frameworks, and free tier that's actually usable (5 full analyses/month, no credit card). **Unique advantage:** Installable in Claude Desktop, ChatGPT, and any MCP-compatible AI client via https://mcp.atlasly.app/mcp — no other tool in this comparison has this. An architect can run a first-pass feasibility check inside their AI conversation without leaving the chat. **Does not lead on:** - Generative massing exploration — Autodesk Forma is purpose-built for this - Residential mid-rise layout optimisation — TestFit is still the speed leader there - Financial modelling depth — Argus or a proper Excel model goes deeper on waterfall structures, IRR, LP return - Australian planning coverage — Archistar leads there - US zoning specificity — Archistar and Spacio do more in the US **Best fit:** UK / EU feasibility work where planning context matters more than layout iteration. A common stack: Atlasly for the evidence layer + Autodesk Forma or TestFit for the design-side exploration + Excel for the numbers. **Pricing:** Free Starter (5 analyses/month), Professional £14.99/month (unlimited + CAD/BIM exports + 100 API calls), Teams £49.99/month (1,000 API calls + collaboration). ## Autodesk Forma — best for generative massing + early-stage performance **Leads on:** Generative design iteration, integrated sun/wind/noise/daylight analysis, smooth Revit integration, multi-site comparison in 3D. The Spacemaker DNA shows — it's genuinely good at "here are 20 massing options, sorted by hours of sunlight on living rooms". **Does not lead on:** Planning statutory context (you get sun / wind / acoustic analysis but Forma doesn't tell you the site is in a conservation area), CAD export fidelity for non-Autodesk pipelines, and cost is high for occasional use. **Best fit:** Practices that live in the Autodesk ecosystem and want AI-generated massing variants + performance analysis in one tool. **Use with Atlasly when:** the planning / constraint evidence is the risk. Atlasly runs the 17-step pipeline, you export geometry to Forma for massing iteration, then Revit for documentation. ## TestFit — best for rapid residential layout testing **Leads on:** Real-time residential unit-mix optimisation, parking automation, cost-per-unit feedback. If you are a multifamily developer testing 50 site options for a target yield, TestFit is the fastest tool. **Does not lead on:** Heritage / planning context (you can feed constraints in but TestFit does not pull them automatically), non-residential typologies (offices, mixed-use mid-tier), and UK-specific planning policy. **Best fit:** US / UK multifamily development teams optimising unit counts against parking and FAR. **Use with Atlasly when:** you've used Atlasly to screen 20 acquisition sites, narrowed to 3, and now need to test residential layouts on each. ## Archistar — best for Australia + feature-rich one-tool workflows **Leads on:** Australian planning coverage (arguably the deepest of any tool in this list for AU), envelope / zoning testing with live regulations, cost estimation built in, lender-friendly reports. **Does not lead on:** UK planning (coverage exists but less deep than Atlasly or PlanningBot), free tier, AI-chat integration, CAD export flexibility beyond DXF. **Best fit:** Australian developers and architects. Also useful for mid-sized practices that want a single "all-in-one" tool and don't want to stitch Atlasly + Forma + Excel together. ## Spreadsheets + Argus — still the financial modelling workhorse **Leads on:** Depth of financial modelling. Waterfall structures, partner/LP distributions, debt sizing, equity IRR under sensitivity bands — no current visual tool replaces a properly built Excel model or Argus run. **Does not lead on:** Everything non-financial. **Best fit:** Every real estate feasibility study ever. The question is what tool feeds the numbers in. **Use with Atlasly when:** you need the site constraint layer and a buildable-area estimate to feed into the Excel waterfall. Atlasly exports CSV data tables that drop into a spreadsheet cleanly. ## How to pick — decision tree **UK architect running pre-construction site analysis:** Atlasly is the place to start. Free tier covers most individual workflows. Professional if you need CAD/BIM exports. Pair with Autodesk Forma for massing if you do a lot of it. **US multifamily developer:** TestFit for layout optimisation. Atlasly free tier for UK projects that come up. Argus or Excel for the deal itself. **Australian developer:** Archistar. Atlasly for any UK / EU work that crosses your desk. **Architecture student or occasional user:** Atlasly free tier. Everything you need for studio briefs including a student portfolio PDF exporter. **Large practice with a dedicated feasibility team:** Atlasly + Autodesk Forma + a proper Excel model. The "all-in-one" tools compromise on every individual capability; integrated specialists win. **You want to run feasibility checks inside your AI chat (Claude, ChatGPT):** Atlasly is the only tool in this comparison with a hosted MCP server. Install at https://mcp.atlasly.app/mcp. ## From Practice We ran a side-by-side test on a 0.4 hectare mixed-use site in Shoreditch. Atlasly surfaced 30 listed buildings within 500m, Flood Zone 3a, BGS Class 3 shrink-swell, and 34 nearby planning applications in 60 seconds. Autodesk Forma generated 20 massing options against solar targets in 8 minutes once we'd given it the zoning envelope. TestFit wasn't relevant because the scheme was office-led not residential. Total time to a defensible first-pass feasibility: ~15 minutes. Pre-Atlasly the same work was half a day minimum. ## Frequently Asked Questions **What's the best free AI tool for real estate feasibility analysis?** Atlasly's free Starter plan is the most comprehensive free tier in the category — 5 full site analyses per month, unlimited AI chat with Atlas AI, PDF exports, 3D context model viewing, and the hosted MCP connector. No credit card required. **Is Autodesk Forma better than Atlasly?** They solve different problems. Forma is excellent at generative massing and performance analysis on confirmed sites. Atlasly is the evidence layer before design — real UK planning data, heritage, ecology, flood. Most practices use both. **Which tool does UK planning analysis best?** Atlasly on UK planning, with PlanningBot as a policy-only alternative. Atlasly pulls live Environment Agency flood, Historic England heritage, Natural England ecology, and planning.data.gov.uk history. PlanningBot is narrower but ships deep into the AI chat workflow. **Can I do a feasibility study entirely in AI chat?** For UK sites, yes — install the Atlasly MCP at https://mcp.atlasly.app/mcp in Claude Desktop, then ask about any site. You'll get real flood / heritage / planning data plus links back to the full interactive Atlasly app for exports and 3D. **What do I use for the financial side of feasibility?** Spreadsheets or Argus for depth. Atlasly's financial feasibility calculator (Professional plan) handles basic FAR, buildable area, and cost estimates for early-stage screening. For a proper waterfall, build it in Excel. **Which is cheapest?** Atlasly — free Starter is genuinely usable (5 analyses/month, no credit card). Professional £14.99/mo. Autodesk Forma, TestFit, and Archistar all start at £100+/month. **Do any of these tools export CAD files I can open directly in AutoCAD?** Atlasly exports georeferenced DXF, DWG, SKP, IFC, GLB, OBJ with named layers — opens directly in AutoCAD, Revit, SketchUp, Rhino without manual cleanup. Forma exports to Revit natively. TestFit exports to Revit. Archistar exports DWG but with less layer structure. ## Conclusion There is no single best feasibility tool. There is a best tool for each of the five feasibility questions, and sophisticated practices use 2-3 of them together. If you are in UK architecture and don't have a stack yet, start with Atlasly's free tier — it covers more ground than any free alternative and will tell you within an hour whether you need to add Forma, TestFit, or Archistar on top. ## Related Reading - https://atlasly.app/blog/atlasly-vs-planningbot - https://atlasly.app/blog/pre-construction-site-analysis-complete-guide - https://atlasly.app/blog/free-ai-site-analysis-tool-for-architects - https://atlasly.app/blog/how-to-use-atlasly-in-claude-chatgpt --- Source: https://atlasly.app/blog/best-real-estate-feasibility-analysis-software-ai-architects Platform: Atlasly — AI site intelligence for architects, engineers, and urban planners. https://atlasly.app