Blocks of flats
An entrance panel at the front door and a handset or monitor in every flat, with a trades button, fob access and remote door release.
Blocks of flats · Houses · Offices
Door entry systems in London
Audio and video door entry for blocks of flats, converted houses, homes and offices. New systems, upgrades from audio to video — often on the existing wiring — and repairs. Surveyed in person, priced in writing, installed with minimal disruption to residents.
- Installing since 2012
- 3,000+ installations
- 12-month guarantee on the installation
- All 32 London boroughs
Door entry we install
Audio and video door entry for flats, homes and businesses
New systems, upgrades from audio to video, and repairs — for houses, converted Victorian terraces, purpose-built blocks and commercial buildings.
Houses
A video intercom at the front door or gate, a monitor indoors and an app so you can see and speak to visitors from anywhere.
Answer on your phone
App-enabled systems let residents answer the door and release it remotely, ideal for deliveries and visitors when you are out.
Repairs & upgrades
Faulty panels, dead handsets and broken door releases repaired, and old audio systems upgraded to video, often on the existing wiring.
Designed for the building
Door entry for every kind of London building
Two to six flats in a Victorian or Edwardian house
Often an old audio system with handsets that no longer work. A two-wire video system usually runs over the existing cable, so residents get video without new wiring through every flat.
- Existing cable tested and reused where possible
- One entrance panel with a button per flat
- Monitors or handsets to suit each resident
Larger blocks with a communal entrance
Larger blocks need a coded or fob entrance, a trades button for deliveries, and a system the managing agent can maintain. We design for the number of flats and the way the entrance is used.
- Fob or code entry for residents
- Timed trades button for post
- Written report suitable for leaseholder consultation
Front doors, porches and driveway gates
A video intercom at the door or gate lets you see who is there before you answer, and open the gate from inside or from your phone.
- Video panel at the door or gate
- Indoor monitor and app
- Gate or door release
Receptions and staff entrances
Video entry at reception, combined with fob or PIN access for staff, so visitors are seen and let in while staff come and go freely.
- Video entry at reception
- Staff fob or PIN access
- Links with access control
Fire safety: doors on an escape route must always open from the inside. Every lock we fit releases safely on a power failure, and exit buttons or handles are provided on the inside.
Equipment
Brands we install
Quoted by make and model, chosen to suit the building and whether existing wiring can be reused.
ComelitHikvisionVidexBPTPaxton
Guide prices
What a door entry system costs
Starting prices so you can budget. Your exact price comes from the survey and is fixed in writing.
Most popular
House video intercom
From £990 inc VAT
- Video panel at the door
- Indoor monitor
- App to answer from anywhere
Audio entry, 2–4 flats
From £1,495 inc VAT
- Entrance panel and door release
- Handset in each flat
- Existing cable reused where possible
Video entry, 2–4 flats
From £2,695 inc VAT
- Video panel at the entrance
- Monitor in each flat
- App answering available
Larger blocks are priced after a survey. Anything that adds cost — new cable runs, door hardware or access control — is flagged at the survey, never on the day.
How it works
From first call to finished
Free site survey
We visit, walk the property with you and look at the entrance, the door and the existing wiring before anything is priced.
Fixed written quote
Every item by make and model, the labour and the payment terms. Usually with you within 24 hours.
Installation day
Dust sheets down, tidy cable routes, and everything tested in front of you before we leave.
Handover
Apps set up on your phones, everyone shown how it works, and a completion certificate for your records.
Where we work
Door entry installation across London and the Home Counties
Based in Harrow, we work across all 32 London boroughs and into Hertfordshire, Buckinghamshire and Middlesex. Choose your area for local information.
Free, no obligation
Book a free door entry survey
Tell us about the building and the current system. We'll call back the same working day to book a time.
- ✓Call us020 8422 7918
- ✓Emailinfo@satfocussecurity.co.uk
- ✓HoursMon–Fri 8am–6pm · Sat 8am–5pm
FAQs
Door entry systems: your questions answered
How much does a door entry system cost?
A video intercom for a house starts from £990 including VAT. For a small block of two to four flats, an audio door entry system starts from £1,495 including VAT and a video system from £2,695 including VAT. Larger blocks are priced after a survey. The price includes the entrance panel, the handsets or monitors, the door release and the installation.
Can you reuse the existing wiring in our block?
Often, yes. Modern two-wire systems from Comelit and Hikvision run over the existing cable between the entrance panel and each flat, so a video system can replace an old audio one without rewiring the building. We test the existing cable at the survey and tell you whether it can be reused.
Can residents answer the door on their phone?
Yes, with an app-enabled monitor in the flat. Residents can see and talk to the visitor and release the door from their phone, even when they are not at home.
We are a managing agent — do you work with leaseholders?
Yes. We provide a written survey report and quote suitable for leaseholder consultation, work around residents during installation, and keep disruption to the entrance to a minimum. We can also supply fobs and manage the handover to each flat.
How do postal workers and deliveries get in?
Options include a timed trades button that works during set hours, fob or code access issued to Royal Mail, or residents releasing the door remotely from the app. We set it up the way the building wants it to work.
What happens in a power cut?
Entrance doors on an escape route are fitted with locks that release safely when power is lost, so people can always get out. The door still closes and latches mechanically, and the system resumes as soon as power returns.
Do you repair existing intercoms?
Yes. We repair and replace faulty entrance panels, handsets and monitors, re-register monitors after a change of owner, and fix door releases that no longer work, on most common makes.
How long does installation take?
A house video intercom is usually fitted in a day. A small block is typically one to two days, depending on whether existing cables can be reused. We agree the timing with residents in advance.
What guarantee do I get?
A 12-month guarantee on our installation work, alongside the manufacturer's warranty on the equipment we supply. You also receive a completion certificate for your records.
Ready to upgrade your door entry?
Free survey, fixed written price, no obligation.