Your business has grown, and the warehouse or production hall is no longer sufficient. Two options: build an extension to the existing building, or construct a new standalone facility. Both are valid, but each has fundamentally different conditions for use — especially in Almaty with its seismic requirements and dense industrial zone development. Here is when each approach makes sense.
40–60%
cost saving with extension vs new building
when attachment is feasible — one shared wall, partly shared foundation
3–4 months
typical extension construction time
vs 6–9 months for a new building of equivalent area — less scope of work
mandatory
state review when modifying load-bearing structures
connecting an extension to an existing building in a seismic zone changes the structural calculation model
+10–15%
premium for a complex structural connection
seismic joint or monolithic tie with the existing building requires a seismic load calculation
When to Choose an Extension
An extension is economically and technically justified when all of the following conditions are met:
1. There is physical space — a vacant adjacent plot with the right to build (no easements, no protected zones).
2. The existing building is in good condition — foundation and load-bearing structures have no critical defects. If the main building is failing, an extension will not save it.
3. The process requires integrated space — if a continuous production flow through connected premises is needed, an extension without structural connection will not work.
4. The height of the new volume is compatible — extending with a 10 m height against an existing 4 m building is a non-standard structural solution and will be expensive.
When to Build a New Facility
A new building is preferable if:
- No space for an extension (or the plot is not properly registered)
- A fundamentally different technology is needed: for example, adding a cold storage to a heated warehouse — a separate structure with its own systems is simpler
- The existing building is headed for demolition: it may be simpler to demolish and build a larger new facility than to extend a dilapidated one
- A better location exists (closer to a highway, railway, or with better logistics)
- The business is scaling fundamentally: a new building = a new legal entity, separate cost accounting, convenient for management reporting
Technical Challenges of Extensions in a Seismic Zone
Almaty is an 8–9 magnitude zone. This adds specific requirements for extensions:
Option A: Expansion (Seismic) Joint
The extension and the main building are separated by an expansion joint and function independently. This is the most common and safest solution:
- Each building has its own foundation
- A 20–50 mm joint between them (filled with a flexible material)
- During an earthquake the buildings move independently — without mutually damaging each other
Pro: simpler to calculate, safer. Con: the joint is an interface that needs to be protected from leaks and insulated. A minor vulnerability in terms of airtightness.
Option B: Rigid Connection (Monolithic Tie)
The extension is rigidly connected to the main building through shared structural nodes. This requires:
- A full recalculation of the entire system (main building + extension) per SP RK 2.03-30-2017
- An assessment of the load-bearing capacity of the existing foundation and structures
- State construction technical review of the new design
This approach is more complex and expensive, but it allows the spaces to be merged without a noticeable joint.
Unauthorised extensions in Almaty carry serious risks
Financial Comparison
Adding 1,000 m² to a 2,000 m² warehouse in Alatau District
Option A: Extension of 1,000 m²
| Item | Cost |
|---|---|
| Extension design + survey of existing building | 1,500,000–3,000,000 ₸ |
| State technical review | 700,000–1,500,000 ₸ |
| Extension foundation | 7,000,000–15,000,000 ₸ |
| Steel frame + seismic reinforcement (3 new walls) | 25,000,000–45,000,000 ₸ |
| Roof and sandwich panels | 12,000,000–20,000,000 ₸ |
| Floors | 10,000,000–15,000,000 ₸ |
| Engineering services (connected from main building) | 5,000,000–10,000,000 ₸ |
| Gates (1–2 units) | 2,000,000–4,000,000 ₸ |
| Total extension, 1,000 m² | 63,200,000–113,500,000 ₸ |
| Cost per m² | ~63,000–115,000 ₸/m² |
Option B: New Building of 1,000 m² (on a separate plot)
| Item | Cost |
|---|---|
| Land 2,000 m² (Alatau District, 90,000 ₸/m²) | 180,000,000 ₸ |
| Turnkey construction | 100,000,000–140,000,000 ₸ |
| Total new building with land | 280,000,000–320,000,000 ₸ |
Without land (if you already own a plot): 100–140M ₸ — comparable to an extension.
Conclusion: where a plot is available and the existing building is in good condition — an extension is 30–50% cheaper. If no plot is available and land must be purchased — a new building at a different location may be more economical.
Checklist: What to Verify Before Deciding
Before an extension:
- Is there a vacant plot with the right to build
- What is the condition of the existing foundation (commission a survey)
- What is the height of the existing building — is it compatible with the new volume
- Are there any protected zones (underground utilities, sanitary buffer zones)
- Are the engineering systems compatible
Before a new building:
- Is there a plot, or funds to purchase one
- Logistics — how convenient is it to operate two buildings in different locations
- Is there a case for selling the existing building and constructing a larger new one
We'll assess your situation: extension or new building in Almaty
StroyHub conducts technical surveys and prepares a financial comparison of both options. Discuss your project with our engineer.