Cornerstone PM vs Aareas

• Scope: Cornerstone PM is a whole operating platform for small-to-mid home builders (scheduling with Gantt charts, permitting and inspections, purchasing, budgets and POs, bid management, a sales pipeline, a design center and a homeowner portal) and lists itself as a beta limited to 100 builders. Aareas sells digital sales and visualization tools: Virtual Design Center versions (Pro, Packages, Play, Virtual Reality), home and product configurators and visualizers, iRenderings, a Virtual Scale Model, a Virtual Site Plan, a 247 Sales Center, a Virtual Purchase Wizard and rendering services, across production, custom and manufactured housing.
• Selections: Cornerstone's design center handles room-by-room selections, spec levels, structural options with real-time pricing, per-room allowances that roll overages into change orders, a product configurator for items such as cabinets and countertops, 64 curated designer packages and a Trade Copy of selections with prices stripped. Aareas focuses on how the buyer sees the choices: it says it renders material combinations live from the active catalog, so a changed or discontinued finish shows everywhere once saved, rather than pre-rendering images.
• AI: Cornerstone's StyleSmith AI (Pro+ and Enterprise) composes a whole-home selection set from one of 10 style themes using the builder's own catalog and prices, holds the home's spec floor and an optional ceiling, writes into selections only on command and does not overwrite approved or locked selections (vendor statements); a buyer style quiz feeding it is in early access, enabled per account. Cornerstone also lists Foreman AI, Blueprint AI, Bid Import AI, Punchlist AI and others. Aareas says AIDA will run inside the Virtual Design Center, take plain-language requests or an inspiration image, map them only to the builder's catalog and suggest compatible options with their pricing impact, but marks it Coming Soon. Tags stay as listed: Cornerstone AI-first, Aareas AI features added to an established product.
• Who drives it: StyleSmith AI is pointed at a home by a design or sales user, with the buyer quiz as an input. AIDA is described as guiding the buyer inside the 3D configurator before the design appointment, and Aareas says it can be activated within an existing VDC Pro or VDC Play setup.
• Data and integration: Cornerstone lists a REST API with webhooks and a built-in MCP server on Pro+ so Claude, ChatGPT, n8n or your own agent can use the same skills, plus one-click JSON or CSV export. The Aareas pages we read describe its 247 Sales Center syncing pricing and availability across websites, kiosks and sales apps but do not list an API for outside agents.
• Pricing (checked Oct 20, 2026): Cornerstone publishes prices: Starter $149, Builder $299 (adds the design center), Pro $499 and Pro+ $599 a month (StyleSmith AI is on Pro+), Enterprise $500 per division a month for the first 5 divisions, annual billing 2 months free, no implementation fee, and a free beta for the first 100 builders. Aareas publishes no prices (/pricing returns a not-found page; Schedule Your Free Demo), and AIDA has no listed price.
• Not used here: Cornerstone's comparisons with NEWSTAR, BuildPro, Buildertrend and JobTread and its implementation-cost figures for other vendors; Aareas's savings, efficiency, upgrade-sales and revenue figures and its years-in-business line. Neither tool has been tested by Means & Methods Lab.

Paraphrased from the sources listed above. Vendor claims are reported as claims.