Buildout API
A working API exists only on the Prospect (ProspectNow) side: property search, owner lookup, and foreclosure endpoints behind per-customer API keys from sales. There is no developer portal, OpenAPI spec, OAuth, or webhooks. Rethink CRM data is reachable only through Salesforce's own APIs.
Frequently asked questions
Buildout scores F on the API Report Card. A working API exists only on the Prospect (ProspectNow) side: property search, owner lookup, and foreclosure endpoints behind per-customer API keys from sales. There is no developer portal, OpenAPI spec, OAuth, or webhooks. Rethink CRM data is reachable only through Salesforce's own APIs.
Without a usable official API, teams fall back on manual exports, file drops, or one-off vendor integrations. The other option is an unofficial API layer like Supergood that automates the authenticated web app directly.
Buildout is a commercial real estate (CRE) brokerage technology platform founded in 2010 in Chicago by Jason Tillery and Vishu Ramanathan, backed by Susquehanna Growth Equity, Riverside, and Saratoga Investment.
Real Estate, specifically U.S. commercial real estate brokerages (office, retail, industrial, multifamily-investment-sales, land). A CRE brokerage uses Buildout end-to-end across a deal: brokers prospect off-market owners and pull tenant/occupancy/transaction history in Prospect by Buildout/ProspectNow; pipeline leads, contacts, and listings into Rethink (Salesforce-based CRE CRM); generate offering memoranda, flyers, email blasts, and a public listing microsite via Buildout Showcase, syndicating to LoopNet, CREXi, Catylist, Brevitas, OfficeSpace.com, TotalCommercial, and other partner sites; manage the buyer/tenant outreach and tours; track LOIs and contracts in Transact; and run commission splits, invoicing, and back-office close in Manage & Close (Quoin).
High within CRE brokerage. Buildout is the de-facto category leader for CRE listing marketing brochures (the 'OM' / offering memorandum workflow) and one of the top three CRE CRM stacks alongside Salesforce-direct and Apto/AscendixRE.
Buildout holds, end-to-end, the data that runs a CRE brokerage: active and historical listings (lease + sale), offering memoranda and flyers with confidential pricing/financials, listing microsites with click/view/inquiry analytics, prospect lists with ProspectNow-enriched owner contact info (LLC piercing, mailing addresses, phone, email, transaction history, debt/foreclosure status, 'likely-to-sell' scores on ~155M U.S. properties), CRM pipeline and forecast in Rethink (deals, stages, comp-set, broker activity), tour/showings history, LOIs and contracts in Transact, commission splits by deal and by broker, broker production reports, accounts-receivable on closed deals in Manage & Close, and the firm's syndication history into LoopNet/CREXi/Catylist.
Mature, mid-modern. Buildout launched in 2010 as a CRE brochure/OM-generation tool and has spent the last five years stitching acquired products (Apto 2022, Rethink 2021, ProspectNow, Quoin) into a single brand.
No public developer portal, no published OpenAPI spec, no documented OAuth flow, and no public SDKs, API access on the ProspectNow side is gated through an internal 'API Console' and per-customer API keys provisioned by Buildout sales/support. Buildout's own marketing copy admits API integration across Buildout's separately-acquired products 'may run into difficulty managing multiple tools that weren't built from the start to speak to each other', i.e., the suite itself is hard to integrate. Full sourced list under Sources below.
Common alternatives include AscendixRE, Apto (now Buildout-owned), CREXi, LoopNet (CoStar), CoStar / CoStar Suite, Reonomy (Altus Group). Graded alternatives appear under "More from the report card" below.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.
Yes. Supergood maintains an unofficial Buildout API and MCP server so AI agents and internal tools can read and write Buildout data. See the Buildout integration docs at supergood.ai/docs/buildout-api.