CCTV Coverage Calculator.
Building parameters in, indicative camera count, retention storage, recording bandwidth and project-cost band out. Sized to NBC and IS-grade specifications across 8 sectors.
- Sectors
- 8
- Accuracy
- ±10–15%
- Codes
- NBC + IS
- Retention
- 30 days
— Coverage · storage · bandwidth · cost
Surveillance, sized to the building.
Building parameters in, indicative camera count, retention storage, recording bandwidth and project-cost band out. Conservative; for project orientation.
Camera count
62
56 interior · 6 perimeter
Retention
60 days
Hotel / Hospitality default
Recording storage
107.3 TB
RAID-5 on internal bays
Recording bandwidth
174 Mbps
H.265 / continuous record
Indicative project cost
₹ 23.2 L
IP cameras · 32-ch commercial NVR · RAID-5 · PoE switch + cabling
- IP cameras₹ 13.6 L
- 32-ch commercial NVR₹ 1.9 L
- Storage — raid-5 on internal bays₹ 4.8 L
- Network ports + cabling₹ 2.8 L
Indicative — site-survey-driven design will refine camera count, mount locations and resolution per zone. Includes cameras, NVR, enterprise storage and network ports; civil work, monitoring station and AMC quoted separately.
· Example use
A 70-bed hospital across six floors with two perimeters lands on roughly 110 cameras at 4 MP, 30 days retention, around 220 TB of recording storage and a switching backbone with 30 percent PoE headroom. Costs land in a defensible band before any vendor walks in. The same building specced casually goes wrong by 30 cameras either way.
· Frequently asked
CCTV coverage —
what people ask first.
Why design to NBC and IS codes?
NBC 2016 Part 4 and the IS 16910-1 surveillance code define the floor — minimum coverage, retention and grade-of-design for life-safety-relevant areas. Anything below is non-compliant; anything above is a design choice. The calculator never drops below code.
How accurate is the camera count?
Within 10 to 15 percent of the final design. The calculator uses field-of-view and overlap rules that match real layouts; the residual variance is for stairwells, lift lobbies and exterior corners that need a real walkover.
Does it account for low-light and high-contrast scenes?
Yes — entrance lobbies, parking ramps and outdoor courtyards trigger the WDR and starlight specifications. Indoor offices and corridors use standard 4 MP fixed-lens cameras unless you flag a special use.
What about analytics and ANPR?
Both are optional layers. ANPR cameras need dedicated lanes; people-counting and intrusion-analytics need higher resolution and specific mounting. The tool flags the upgrade band; the design conversation defines the count.
Which brands do you specify?
Hikvision and Dahua for value, Axis and Bosch for premium and defence-adjacent, Hanwha and Avigilon for analytics-heavy estates. We are brand-agnostic at concept stage and brand-specific at BoQ stage — chosen on use case, not on margin.
· Begin
Specifying CCTV
for a real building?
Send the floor plates, the operating context and the retention requirement. We will return a sized design and a defensible cost band within two working days.