Yes. Each joined row from NRPP plus NRSB becomes one cached page, so the practical ceiling is your sitemap budget and Google's crawl rate, not SleekRank. A 2,000-row directory renders without code changes. Most directories pace their growth so sitemap submission and indexation stays within Search Console's normal cadence.

Each certification body is loaded as its own source with its own cache duration. The certifications column on the joined row drives dual pills, and the template renders each pill based on the live value. When NRPP or NRSB updates after a test cycle, the relevant pages reflect the change on the next cache refresh without WordPress edits.

Yes. The services column maps to a list facet on the page group. Testing-only, mitigation-only, real-estate-transaction testing, and combined testing-and-mitigation each become a chip in the sidebar. The available chips are computed from the live data, so service combinations stay aligned with what testers actually offer.

Yes. The epa_zone column maps to a regional pill on the page and a filter chip in the sidebar. Buyers in Zone 1 metros, where radon readings are statistically high, can filter directly to local pros without scrolling through Zone 3 areas where the test is more often a formality.

Update the row in the source and the page reflects the change on the next refresh. The certification pill disappears, and depending on your policy you can hide the page entirely from the public directory or leave it visible with a clear lapsed-certification status. Both approaches are configurable per page group.

Yes. Address, hours, service area, and business name map to LocalBusiness JSON-LD via meta and selector mappings. Services and certifications nest inside as Service entries. The rich result eligibility check passes because the schema is rendered server-side at the time the page is built from cache.

Yes. Configure NRPP and NRSB as primary sources and each state radon program as a tertiary source on the same page group. A join field links them, and each generated page renders the certification body credentials plus state-program approval status. This is what real estate agents and home buyers actually check before booking.

Yes. The sitemap is generated for every produced URL the moment the page group goes live. Submit it to Search Console once and Google discovers the URLs on its normal cycle. New pros added to NRPP or NRSB after launch appear as live pages and join the sitemap on the next refresh without manual steps.