Controlling access to your building is one of the most important security measures for anyone living in a flat or apartment. The right door entry system keeps unauthorised visitors out while making access convenient for residents and legitimate guests.
As experienced door entry installers across North London, East London, and the rest of the capital, we've fitted systems in everything from small conversions to large purpose-built blocks. Here's our complete guide.
Quick Summary
- →Audio intercoms start from £150–£300 per flat installed
- →Video entry systems cost £250–£500 per flat with screen
- →Smartphone-connected systems: £300–£600 per flat, no monthly fees
- →Key fob access adds convenience without compromising security
- →Freeholder/management company approval usually needed for communal installs
Types of Door Entry Systems
Audio Intercom
£150–£300/flat- Voice communication
- Remote door release
- Low maintenance
- Most affordable option
Video Entry
£250–£500/flat- See who's at the door
- Screen in each flat
- Visual confirmation
- Popular choice
Smartphone Connected
£300–£600/flat- Video call to phone
- Grant access remotely
- No monthly fees
- Works from anywhere
Audio Intercom Systems
The most affordable option — a visitor presses your flat's button and you speak through a handset or wall-mounted speaker.
- Remote door release from inside your flat
- Reliable and low-maintenance
- Best for budget-conscious buildings
Video Door Entry Systems
Adds a camera to the entrance panel so you can see who's at the door on a screen inside your flat.
- Visual confirmation before granting access
- Particularly valuable for ground-floor flats
- Popular choice for buildings in busy areas
Smartphone-Connected Systems
When someone buzzes your flat, you receive a video call on your phone and can grant access from anywhere.
- Works via Wi-Fi or 4G — at home, at work, or on holiday
- No monthly fees on most models
- Increasingly popular across London
Best value for most buildings
Key Fob & Code Access
Many buildings combine intercoms with key fob or keycode access for residents:
- Quick entry without buzzing — ideal when returning with shopping
- Fobs can be deactivated if lost
- Codes changed regularly for security
Need a quote for your building?
We provide free site surveys for buildings of all sizes across London & the Home Counties.
Choosing the Right System for Your Building
Small Conversions (2–4 Flats)
£800–£1,500- Simple video intercom
- Screen + handset in each flat
- Installed in a single day
Medium Buildings (5–20 Flats)
£2,000–£5,000- Larger entrance panel
- Key fob access for residents
- Car park / rear access coverage
Large Blocks (20+ Flats)
£5,000–£15,000+- Multiple entrance panels
- Concierge capability
- Fire alarm integration
Installation Considerations
Wiring
Most door entry systems require cabling between the entrance panel and each flat. In existing buildings, cables typically run through:
- • Communal risers and ceiling voids
- • Surface-mounted trunking where concealed routing isn't possible
The complexity of cable routing significantly affects cost and timeline.
Important for leaseholders
Common Problems We Solve
- Outdated systems: Replacing old, unreliable intercoms that no longer work properly
- No entry system: Adding access control to buildings that currently have none
- Broken door release: Repairing or replacing faulty electric door strikes
- Tailgating prevention: Systems that prevent unauthorised people following residents through doors
- Integration with CCTV: Combining door entry with CCTV cameras for comprehensive entrance security
Key Takeaway
Get a Quote for Your Building
Whether you're a resident, leaseholder, freeholder, or managing agent, we provide free site surveys and detailed quotations for door entry systems across London. We work with buildings of all sizes across Enfield, Barking, Golders Green, and all our service areas. Contact us today for a free assessment.
Eagle All Security
Family-run security specialists protecting homes and businesses across London & the Home Counties since 2014. All advice is based on hands-on installation experience.
