Showing Signal started with a straightforward observation: ShowingTime had been owned by Zillow for three years, and independent buyer's agent teams still had no automated post-showing follow-up. That wasn't changing. So we built it.
Showing Signal is built by THD Agentic Systems LLC, a one-person infrastructure and automation shop run by a senior cloud engineer with 15+ years of hands-on experience across aerospace, enterprise IT, and DevOps. Not a VC-backed PropTech startup optimizing for Series B metrics. A practitioner who builds things that solve specific, real problems.
The architecture behind Showing Signal — email-parsing middleware, resilient format detection, CRM API integration — is the same class of work that runs in production environments where downtime means planes are late or financial data goes missing. It was designed to be quiet, reliable, and invisible when it's working.
It's built for agents who need it to just work — not for demos, not for pitch decks.
ShowingTime processed over 50 million showings in 2023. Every one of those confirmations landed in an email inbox and went nowhere automatically. The follow-up — the CRM update, the feedback request — was either manual, missed, or patched together with brittle Gmail Zaps that broke every time ShowingTime changed a subject line.
The gap was obvious to anyone working buyer-side at an independent team. It wasn't on Zillow's roadmap. It's not going on Zillow's roadmap. So it became our roadmap.
Pre-sales questions, CRM integration questions, or anything else you need answered before signing up — email is the fastest path.