Research for property decisions

Useful questions. Inspectable answers.

Name: 911 Sentinel
Address: 15806 HWY 99 STE 1, Lynnwood, WA, 98087, US
Telephone: 425-780-5192
Price range: $$$

We use operational, field, and public-record data to answer the questions property teams face before they change coverage, staffing, or equipment.

What will I get from this research library?

A direct answer first, the numbers that support it, the counterevidence that can change it, and practical questions you can apply to a real property. Methods and sources remain available without forcing every reader through a research memo.

01Operations

What happens after an alert

Response outcomes, alert triage, and the performance measures that reveal what an average hides.

26-09-23

What does Seattle's public call data show about response-time distributions?

Response time is a distribution dominated by dispatch delay for lower priorities, not a single average.

26-09-08

When an incident closes without police involvement, what actually happened?

A non-police closure rate is only useful when the provider also shows dispositions, unresolved cases, and the denominator behind it.

26-09-08

How much operational work sits between a raw alert and a distinct incident?

A useful monitoring scorecard distinguishes raw alerts, reviewed alerts, incident-linked alerts, and distinct incidents.

26-09-08

If the average is 5.6 minutes, what wait should a property plan for?

Response reporting needs a target-hit rate, upper-tail percentiles, cancellations, and missing arrivals beside the average.

02Place and time

Where exposure concentrates—and how it changes

Public-record analyses for property teams deciding where to look, when to refresh, and which shortcuts to avoid.

26-09-23

How concentrated is property crime at the street-segment level, and does the concentration persist?

Reviewing the busiest 1% of segments covers more than a quarter of recorded property crime, and the ranking barely moves year to year.

26-09-23

What do Seattle's 311 disorder reports actually tell you about property crime?

311 is a reporting process: its volume surged independently of recorded crime, and it differs sharply by precinct.

26-09-23

Does the after-dark pattern survive weather, season, and moon controls?

The midnight sensitivity holds under environmental controls; the moon shows no effect and weather very little.

26-09-23

How quickly do Seattle property-offense records actually appear?

Recent occurrence-date totals are structurally incomplete, offense-specific, and lack any published revision history.

26-09-08

Is a citywide property-crime average useful for one property?

Repeat-block history can prioritize a closer review, but it is not a forecast or property risk score.

26-09-08

Does sunset provide a defensible cutoff for security coverage?

Timestamp precision changes the direction of the result, so hour, season, offense mix, and property exposure matter more than an after-dark headline.

26-09-08

How long should a recent crime view remain marked provisional?

Occurrence-date totals for recent periods are structurally incomplete and should not be compared with settled historical periods.

26-09-08

Is permit-active status a reliable signal of increased nearby larceny?

Permit phase alone is an unstable proxy for construction-site theft exposure; site conditions and project moments deserve the attention.

26-09-08

How much should a current plan rely on a block that was elevated last year?

A useful plan combines a persistent baseline with a refreshed recent-change layer instead of freezing one hotspot map.

03Camera systems

Whether the view is actually useful

Field questions about blind priority points, light conditions, false alerts, and the limits of equipment comparisons.

26-09-08

Should a property add cameras before auditing the views it already has?

Camera count is a poor proxy for usable coverage; priority points and failure causes lead to better fixes.

26-09-08

Is thermal always better than visible imaging?

The practical decision is where thermal should supplement visible coverage, not whether it should replace visible cameras everywhere.

New coverage — intake open

Turn a useful question into a property-specific review.

Research can improve the questions. A site assessment applies them to access points, priority areas, camera views, operating hours, and escalation needs at one property.

Request a site assessment 425-780-5192