Security is part of everyday life in Nairobi. Homeowners, landlords, shop owners, hotels, schools, factories and offices all need some form of protection, and a growing number of companies offer physical security services in Nairobi to meet that demand. These range from manned guarding and mobile patrols to alarm response, CCTV, access control, canine units, event security and cash-in-transit.
Choosing a provider depends on what you are protecting. A residential estate needs different cover from a warehouse, a bank branch or a wedding. Some companies are large regional groups with thousands of guards, while others are smaller local firms that offer more personal service and flexible contracts.
This guide lists 12 companies offering physical security services in Nairobi, starting with Bestcare Security. The rest of the list is not a ranking, and the order does not reflect quality or popularity. Information was compiled from company websites and business directories, including Yellow Pages Kenya and Businesslist, together with industry write-ups. Addresses, phone numbers and service ranges can change, and some directory entries may be out of date, so please confirm details directly with a company before signing a contract. Where a detail could not be confirmed from the sources used, the table says so.
1. Bestcare Security
Bestcare Security is the security arm of Bestcare Facilities Management, which is based in Westlands. It provides guarding and security services for homes, businesses and institutions in Nairobi and other parts of Kenya, and combines guards with technology such as CCTV, alarm response and biometric access control.
| Company information | Details |
|---|---|
| Name | Bestcare Security |
| Services | Manned guarding, security patrols and mobile patrol, alarm systems and 24/7 alarm monitoring and response, CCTV installation and surveillance, access control and biometric systems, K9 security units, event security, fire safety and emergency response, security consultation and risk assessments |
| Phone | +254 722 566 999 / +254 725 548 383 |
| info@bestcareservices.co.ke | |
| Address | Mpaka Plaza, 1st Floor, Rm. 101, Mpaka Road, Westlands, Nairobi |
Bestcare is a practical choice for clients who want guards, electronic security and a security assessment from one provider. It lists service coverage across Westlands, Karen, Lavington, Kilimani and Embakasi, as well as towns outside Nairobi.
2. SGA Security
SGA Security is one of the largest security groups in East Africa. It has operated since 1969, runs its own security training school in Nairobi, and offers both manpower and electronic security solutions.
| Company information | Details |
|---|---|
| Name | SGA Security |
| Services | Manned guarding, K-9 units, cash-in-transit and cash management, alarms, access control and CCTV, events security, VIP services, cargo tracking and escort, consultancy and investigations |
| Phone | +254 20 2604356-61 |
| Address | Head office, Mombasa Road, opposite Crater Automobiles, Nairobi |
SGA suits large organisations, institutions and residential estates that want an established provider with wide coverage and a full range of services.
3. GardaWorld Kenya (KK Security)
GardaWorld Kenya operates in Kenya as KK Security Ltd, a GardaWorld company. It is one of the country’s longest-established private security firms, with a history going back to 1967.
| Company information | Details |
|---|---|
| Name | GardaWorld Kenya (KK Security Ltd) |
| Services | Manned guarding, canine security, cash management, facilities management, corporate security and travel risk management |
| Phone | 0709 955 000 / 0709 955 555 |
| Address | 21 School Lane, Nairobi 00100 |
Its size and international backing make GardaWorld a common option for corporates, embassies and organisations that need structured security operations.
4. Securex Africa
Securex was founded in Kenya in 1970 and is known for technology-led security. Alongside guarding, it focuses on electronic systems and vehicle tracking.
| Company information | Details |
|---|---|
| Name | Securex Africa (Securex Agencies Ltd) |
| Services | Security guarding, CCTV video surveillance, access control, alarms and automation, fleet and vehicle tracking |
| Phone | +254 711 069 999 |
| info@securex.co.ke | |
| Address | 9 Riverside, Riverside Drive, Nairobi |
Securex is worth considering for clients who want guards backed by surveillance, alarms and tracking systems rather than manpower alone.
5. G4S Kenya
G4S Kenya is part of the global G4S group, which is owned by Allied Universal. It offers manned guarding, secure logistics and technology-based security services, and is widely used by banks and large corporates.
| Company information | Details |
|---|---|
| Name | G4S Kenya |
| Services | Manned guarding, cash and secure logistics, integrated security systems, courier services |
| Phone | 020 698 2000 / 0711 042 000 (head office, Nairobi) |
| Address | Head office in Nairobi, with branches across the country; confirm the address directly |
G4S can serve organisations needing guarding and cash services under one contract, particularly where branches are spread across several towns.
6. Radar Limited
Radar Limited is a Nairobi-based security company incorporated in 1997 and operating from Ngong Road. It has a mixed client base of corporate and residential customers and is known for direct access to its management.
| Company information | Details |
|---|---|
| Name | Radar Limited |
| Services | Guarding, CCTV installation, emergency response, firefighting support and dog-assisted security sweeps |
| Phone | Not confirmed in the sources used; contact the company directly |
| Address | Ngong Road, opposite Nairobi Baptist Church, Nairobi |
Radar is a mid-sized option for businesses and residential clients who want a company that is easy to reach.
7. Ultimate Security Ltd
Ultimate Security is a long-standing local company with its own premises on Ngong Road. It offers guarding together with road rescue services.
| Company information | Details |
|---|---|
| Name | Ultimate Security Ltd |
| Services | Security guarding and road rescue |
| Phone | +254 733 778 410 / +254 722 725 310 / +254 20 3875475 |
| Address | Ultimate Security Ltd House, Ngong Road, Nairobi |
Customers should ask about the full range of electronic and response services available alongside guarding.
8. Brinks Security Services Ltd
Brinks Security Services operates from Lavington and is a familiar name in residential areas. It provides structured guarding teams for homes and commercial properties.
| Company information | Details |
|---|---|
| Name | Brinks Security Services Ltd |
| Services | Guarding for residential and commercial properties |
| Phone | +254 20 3862417 |
| Address | Brinks House, Othaya Road, Lavington, opposite the Egyptian Embassy, Nairobi |
It is suited to homeowners and estates in Lavington, Kilimani and nearby neighbourhoods.
9. Brick Security Limited
Brick Security is a Nairobi-based company with a broad list of services for businesses and residential clients.
| Company information | Details |
|---|---|
| Name | Brick Security Limited |
| Services | Manned guarding, fire marshal services, construction site security, alarm response, CCTV installation, security patrols, concierge services, retail security and event security |
| Phone | +254 745 507 698 / +254 727 223 451 |
| info@bricksecurity.co.ke | |
| Address | Nairobi (street address not confirmed in the sources used) |
The range of retail, construction and concierge services makes it relevant to shops, developers and property managers.
10. K9 Xtreme Security
K9 Xtreme Security is listed in business directories as a security company based at Nyayo Stadium. Its name suggests canine units, but the exact service range should be confirmed before booking.
| Company information | Details |
|---|---|
| Name | K9 Xtreme Security |
| Services | Security services (listed as a security company; confirm canine and guarding options directly) |
| Phone | +254 722 447837 / +254 707 963711 |
| Address | Nyayo Stadium, Nairobi |
Dog units can be useful for large compounds, warehouses and night-time perimeter patrols.
11. Saladin Security Ltd
Saladin Security is a Nairobi security company based in Langata.
| Company information | Details |
|---|---|
| Name | Saladin Security Ltd |
| Services | Security services (listed as a security company; confirm exact services directly) |
| Phone | +254 721 612885 |
| Address | Hardy Office Park, Ushirika Road, Langata, Nairobi |
Its location makes it convenient for clients in Langata, Karen and the surrounding areas.
12. Perk Security Limited
Perk Security is based in Industrial Area, which suits businesses in the industrial and commercial districts of eastern Nairobi.
| Company information | Details |
|---|---|
| Name | Perk Security Limited |
| Services | Security services (listed as a security company; confirm exact services directly) |
| Phone | +254 724 054515 / +254 20 4401635 |
| Address | Lunga Lunga Road, Industrial Area, Nairobi |
Warehouses, factories and logistics companies should confirm guard numbers, patrol arrangements and response times.
What Types of Physical Security Services Are Available in Nairobi?
The companies above show that physical security covers much more than placing a guard at a gate. Depending on the provider, customers can choose from several services.
Manned Guarding
Uniformed guards protect homes, offices, estates, shops, construction sites and factories. They control access, patrol the premises, log visitors and respond to incidents.
Mobile Patrols and Alarm Response
Patrol vehicles visit sites at scheduled or random times, and response teams are dispatched when an alarm is triggered. This is a cost-effective way to cover sites that do not need a permanent guard.
CCTV and Electronic Security
Cameras, alarms and intruder detection systems add a layer of protection and give you a record of what happens on the property. Many companies offer installation, monitoring or both.
Access Control
Visitor registration, key cards and biometric readers restrict who can enter offices, data rooms and secure areas.
Canine Security
Trained dogs and handlers patrol perimeters, detect intruders and provide an extra deterrent, especially at night and at large sites.
Event Security
Concerts, weddings, conferences and corporate functions often need temporary guards for crowd control, entry checks and emergency response.
Cash-in-Transit and VIP Protection
Larger providers also move cash and valuables securely and supply trained escorts for executives and high-profile individuals.
How to Choose a Security Company in Nairobi
Start by confirming that the company is registered with the Private Security Regulatory Authority (PSRA), which regulates private security providers in Kenya. Ask to see the registration and the company’s insurance cover.
Then ask how guards are recruited, vetted and trained, and who supervises them. A good provider should be able to explain its supervision visits, reporting process and what happens if a guard is absent.
Response time matters, particularly for alarm response and patrol services. Ask where the nearest response vehicle is based and how quickly it can reach your property.
Finally, request a site survey and a written quotation. A reputable company will assess your premises, recommend the right mix of guards and technology, and set out the contract terms, including notice periods and replacement guards. Do not choose on price alone, since the cheapest option is not always the safest.
Nairobi has a wide choice of companies offering physical security services in Nairobi, from large regional groups such as SGA, GardaWorld, Securex and G4S to local firms that serve particular neighbourhoods and industries. The 12 companies in this guide offer different combinations of manned guarding, patrols, alarm response, CCTV, access control, canine units and event security.
Because contact details, addresses and service ranges change, and some directory entries are older than others, confirm the latest information with each company before making a decision. When comparing physical security services in Nairobi, look at the whole package: registration, training, supervision, response times, technology and contract terms, as well as the monthly price.