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Key and lock service

Cutting keys, mending locks and opening jammed doors. A key is Tk 25-200 and a house call Tk 250-500; a good day brings a thousand, a bad day nothing.

  • Last reviewed: 19 September 2026
  • Version 1
Starting capital
৳3,000 – ৳40,000
Editorial estimate
Manpower
1 – 2 people
First sale
1 – 7 days
Editorial estimate
Break-even
0.5 – 4 months
Editorial estimate
Kind of work
Mobile service · Easy

What the business is

Cutting keys, mending locks and opening jammed doors and almirahs takes almost no capital: a wooden box, a few files and a rasp, some key blanks and a handful of locks. No shop is needed - sit at a busy junction with the box, and go to the house when someone calls. Ahmad Ali has sat in front of the Nagar Bhaban gate at Bandarbazar in Sylhet city for fifteen years. He told Prothom Alo that he charges Tk 25 to Tk 200 to cut a key, set by the type, the size and what is asked for. Being taken to a house pays best: sometimes Tk 500, usually Tk 250 to Tk 300. A good day can bring a thousand taka, but in his words that comes round once in three or six months, and on some days nobody comes at all and he goes home with an empty pocket. About fifteen others in the same trade sit around him - easy to start, and crowded because of it. Those who survive do not only sit: they put their phone number about and go to the house or the office the moment they are called.

Unit economics

ItemRangeEvidenceSuggest a correction
Monthly working capital৳2,000 – ৳10,000Editorial estimate
Selling price৳25 – ৳500 / unitPractitioner verified
Variable cost৳10 – ৳100 / unitEditorial estimate
Gross margin60% – 80%Editorial estimate
Time to first revenue1 – 7 daysEditorial estimate
Break-even time0.5 – 4 monthsEditorial estimate
Cash cycle0 daysPractitioner verified
Waste / loss2% – 5%Editorial estimate
Daily capacity0 – 8Editorial estimate

What you need to start

  • A wooden box, files and rasps in several sizes, pliers, a hammer, screwdrivers and thin lock-opening tools. Ahmad Ali's entire shop is a cloth spread over a wooden box.Equipment
  • Key blanks in various sizes, a few types of lock and round door handles. Ahmad Ali keeps several handles, locks and assorted keys laid out on his box.Starting stock
  • Trade licence from the city corporation or municipality. Those who sit on the footpath with a box usually do not take one, but it is required once you take a shop or trade under a name: form Tk 10, book Tk 50, standard tax Tk 30, stamp Tk 150-300, licence fee Tk 100-60,000, issued in 3-5 working days.Licence
  • Filing a key to shape, understanding a lock's levers, and opening an almirah without breaking it. Ahmad Ali used to sell spectacles and made this his trade after learning it.Skill
  • No fixed shop. A place to sit in front of a government office or a big bazaar gate is enough, and the rest of the work happens at the customer's house.Workspace

How the work runs

  1. 1Learn the work. Filing a key to shape, reading the levers inside a lock, and opening an almirah without breaking it are all learned at the bench, not from a book.
  2. 2Choose the pitch: in front of a government office, a city hall, a court or a big bazaar gate - where many people pass daily and keys and locks come up.
  3. 3Get the kit: a wooden box, files and rasps in several sizes, pliers, a hammer, key blanks, and a few types of lock and door handle.
  4. 4Set the price by the job: less for a simple key, more for a complicated or large one. Ahmad Ali works between Tk 25 and Tk 200 by type and size.
  5. 5Do not just sit. Going to the house or the office pays best - Ahmad Ali says a house call sometimes brings Tk 500.
  6. 6Put your number about. Leave it with landlords, building guards, flat managers and the nearby hardware shops - when a key is lost, those are the people asked first.
  7. 7Add selling new locks. Someone who needs a lock opened usually needs a new one too; supplying it at the same time earns twice from one visit.
  8. 8Check who you are opening a lock for. Ask whether they own the place, look at an ID and write it down if you can - otherwise a theft can land on your head.
  9. 9Sit at the same pitch every day, and on holidays too. Ahmad Ali turns up the day after Eid to earn - the customers come precisely when others are not there.

Seasons

  1. JanNormal
  2. FebNormal
  3. MarNormal
  4. AprNormal
  5. MayNormal
  6. JunNormal
  7. JulNormal
  8. AugNormal
  9. SepNormal
  10. OctNormal
  11. NovNormal
  12. DecNormal
HighNormalLow

Where it fits

  • Strong fitChattogram · A large city with many offices and commercial buildings, with work around the bazaars and the court area.
  • Strong fitDhaka · The greatest turnover of tenants and the most flats and offices, so lost keys and lock changes come up most here.
  • Strong fitSylhet · Locksmiths sit in front of the Nagar Bhaban gate at Bandarbazar in the city; Ahmad Ali has worked there for fifteen years with about fifteen others around him.
  • PossibleCumilla · Work comes both from the large bazaars and from the empty houses of families abroad.
  • PossibleGazipur · A dense belt of factories, dormitories and rented housing that generates steady lock and key work.
  • PossibleKhulna · A divisional city where pitches are available in front of government offices and big bazaar gates.
  • PossibleNarayanganj · Dense settlement and warehousing, with work changing shop and godown locks.
  • PossibleRajshahi · A university and hostel area where lost keys in messes and hostels are a regular job.

Risks and cautions

  • HighDemand: The demand is irregular and cannot be forecast. People come only when a key is lost or a lock fails, and that does not happen on a schedule. Ahmad Ali says that on some days nobody comes, and a good day's earnings come round only 'once in three or six months'. On a rainy day nobody had come by one in the afternoon and he sat dejected - in this trade a bad day is simply a day with nothing.
  • HighOther: Crowding and competition. Because it needs no capital, anyone who learns it can set up. Fifteen others in the same trade sit around Ahmad Ali, in the same state - some days they go home with an empty pocket. With that many at one pitch there is no room to raise the price.
  • HighOther: The risk of being drawn into crime. Without checking whose lock you are opening, suspicion in a theft falls first on the locksmith. Duplicate keys are a real problem - in June 2026 a case was reported of Tk 17 lakh taken from an ATM booth using a duplicate key. Checking identity and keeping a record of the work is self-protection.
  • MediumWorking capital: Daily income with no cushion. Ahmad Ali alone supports four children and says that even a good day is 'about a thousand, and two days are hard to run on that'. A day without earnings leaves nothing for the next day's market, and illness stops the income entirely, because the work is in one man's hands.

Sources

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