Site Lighting and CPTED — The Houston Jobsite Checklist
Crime Prevention Through Environmental Design (CPTED) applied to a Houston jobsite comes down to lighting, sightlines, defined boundaries, and maintenance. Sites that follow the checklist see 40–60% lower theft frequency than un-CPTED sites in matched Guardtress deployment data. The lighting layer is the highest-ROI investment.
The four CPTED principles applied to a jobsite
Natural surveillance — sightlines from public streets into the site are unobstructed at critical corners. Solid privacy fencing is worse than chain-link on the theft-vulnerable perimeter.
Access control — a single primary ingress with defined pedestrian and vehicle paths. Multiple half-open ingress points are the pattern that thieves scout for.
Territorial reinforcement — signage, painted boundaries, and visible cameras communicate 'this site is claimed and watched.'
Maintenance — a well-maintained site signals presence; a debris-strewn site signals abandonment even during active work.
The lighting checklist
Minimum 5 foot-candles at all pedestrian ingress. Minimum 1 foot-candle across the working perimeter. Zero dark corners deeper than 15 feet from a lit area.
Warm-white (3000K–4000K) LED is easier on neighbor complaints than cool-white. Motion-triggered flood at the high-value asset apron is the highest-ROI single fixture.
- 5 fc at all pedestrian ingress
- 1 fc across working perimeter
- No dark corners >15ft from lit area
- Motion-triggered flood at high-value apron
- Warm-white LED (neighbor-friendly)
Sightlines and fencing
The instinct to solid-fence a jobsite for privacy backfires. It creates a visual barrier that means neighbors and passers-by can't see intrusion — and thieves inside the fence can't be seen either.
Chain-link with green privacy slats only at the office trailer window line gives you office privacy without killing the perimeter sightline. This is what Guardtress recommends on 80%+ of urban Houston sites.
Signage that actually works
Generic 'NO TRESPASSING' signs are wallpaper — thieves don't read them. Signs that reference specific active monitoring (Guardtress, 24/7 talkdown, LPR active, HPD dispatch) reduce approach frequency measurably.
Post at every ingress and at 150-ft intervals around the perimeter. Use both English and Spanish. Include the phone number of the monitoring center.
- Reference active monitoring by name
- Include monitoring center phone
- English + Spanish
- Every ingress + 150ft intervals
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