About Properties Incorporated

What we publish

Those are live counts from our own database, not rounded marketing numbers. Alongside them we publish state hubs, head-to-head market comparisons, long-form research, three financial calculators, and a public methodology page that defines every metric we display.

What Properties Incorporated is — and is not

Housing sites blur this line constantly, so we will be blunt about it. Knowing which side of the transaction a website sits on tells you what its numbers are for.

Who publishes this

Properties Incorporated is founded and edited by Marc Henderson. Marc is a U.S. Navy veteran who has worked in search and organic acquisition since 2002 — more than two decades of building sites whose entire job is being found, trusted, and cited. He owns Ketchup Consulting, the Virginia Beach consultancy that operates this site, and he is the named editor of record for everything on it.

That matters here for a specific reason. The market verdicts on this site are produced by a rule set, not by a writer’s opinion — but somebody has to own that rule set, publish it, and answer for it when a number looks wrong. That is the job. Marc writes the classification logic, maintains the source list, decides when a provider’s data is no longer trustworthy enough to present as current, and signs the corrections.

He also operates several other consumer tools — a credit-review platform, a pre-purchase vehicle-inspection marketplace, and a used-motorcycle listings aggregator. Those relationships are disclosed in full on our network disclosure page, including how money moves between them. We would rather you read that page than discover the connection on your own.

How a page on this site gets made

Every market page follows the same four steps. Nothing on a city or ZIP page is hand-typed, and nothing is invented by a language model — if a number is missing from the source, the page says so rather than filling the gap with an estimate.

1. 01

   Ingest

   Five Python pipelines (pipeline_zillow, pipeline_redfin, pipeline_census, pipeline_fred, pipeline_nces_schools) pull each provider's published files directly from the provider — no scraping, no resellers, no third-party data brokers. Rows land in Postgres keyed to a location and a period.

2. 02

   Normalize

   Every row is stamped with its source and its period_start before it is stored, so a Zillow value can never be silently mixed with a Redfin value in the same sentence. Locations are matched on official place names, not fuzzy string guesses.

3. 03

   Render

   Pages are generated from templates against those stored rows. The narrative sentences — whether a market leans toward buyers or sellers, whether inventory is loosening — are produced by one published rule set documented on the methodology page, not written per-city by hand and not generated by a language model.

4. 04

   Review

   The rule set and the source list are reviewed by the named editor whenever a provider changes what it publishes. The September 2026 review is what added the Redfin freshness disclosure you see across the site.

Freshness and corrections

Different providers move at different speeds, so every number on this site carries the name of its provider and the period it describes. Zillow’s home-value and rent indices refresh monthly. The Freddie Mac mortgage-rate series refreshes weekly through FRED. Census ACS and NCES refresh yearly.

If a figure looks wrong, tell us. We publish the rule that produced it, so a correction is usually a matter of pointing at the rule or the source row. Corrections to a metric definition or a threshold get a dated note on the methodology page; corrections to a single location’s data are fixed at the pipeline and re-rendered on the next refresh.

How this is paid for

The site is free, has no paywall, and requires no login. It is funded two ways, and both are disclosed:

• •Flat advertising fees. Real estate agents and brokerages can buy one featured slot on a specific market page for a flat monthly rate. It is an advertising fee for placement — not a referral fee, not a commission split, and not contingent on any transaction closing. Details are on the advertise page.
• •Affiliate and cross-property links. Some outbound links go to services operated by the same team or to partners who pay a commission. Every one of those relationships is named on the network page.

What advertising does not buy: a different market verdict. The classification rules run on the stored data before any advertiser is attached to a page, and an advertiser’s presence is not an input to them. If a paid slot sits on a city page whose verdict says buyers have leverage, that is what the page will keep saying.

Where to go from here

• MethodologyEvery metric defined, with its formula and the rule that turns it into a verdict.
• Data sourcesEach provider, its licence, its cadence, and what we take from it.
• Browse marketsStart with the national view, then drill to a state, city, or ZIP.
• ContactCorrections, data licensing, press, and partnership questions.