How Much Do AAC Blocks Cost in 2025? A Buyer’s Guide by Size & Region

If you are planning a construction project in India, one of the most important questions is: How much do AAC blocks cost?

Autoclaved Aerated Concrete blocks (AAC Blocks) have become a popular choice for modern construction. They are lightweight, eco-friendly, and reduce construction time. But their price is not fixed—it varies depending on block size, density, brand, and region.

This guide covers everything you need to know about AAC block pricing in 2025, including size-wise, density-wise, and region-wise costs, along with comparisons to red bricks.

What Drives AAC Block Prices?

The price of AAC blocks is not a static figure. It’s a dynamic number influenced by several key factors:

Size: 

Larger blocks naturally cost more per piece but can reduce overall construction costs due to fewer blocks needed.

Density/Grade: 

AAC blocks are typically available in different densities, like 550 kg/m³ or 650 kg/m³. The density affects the block’s strength and weight, which can, in turn, influence the price.

Brand:

Well-known brands often have a different pricing structure compared to local or unbranded manufacturers.

Region/Freight: 

AAC blocks are volumetric, meaning they take up a lot of space. Transportation costs (freight) are a significant component of the final price, which is why prices can vary drastically from one city to another.

Bulk vs. Retail: 

Buying in bulk for a large project will get you a better per-unit price than buying a small number of blocks for a retail purchase.

Raw Material & Energy Costs: 

The primary raw materials for AAC blocks are cement, lime, gypsum, fly ash, and an aluminum powder. Fluctuations in the cost of these materials, as well as the energy required for the autoclaving process, directly impact the final price.

AAC Block Sizes and Pricing in India

In India, AAC blocks come in standard dimensions, with typical lengths and heights around 600 mm x 200 mm (or 24 in x 8 in). The key differentiator in size, and thus price, is the thickness, which generally ranges from 50 mm to 300 mm.

Size Glossary: The common sizes are often referred to by their thickness in inches:

• 4-inch blocks (100 mm)
• 6-inch blocks (150 mm)
• 8-inch blocks (200 mm)
• Some brands also offer variations like 625 mm x 240 mm dimensions.

Also Read: Benefits of Using AAC Blocks

How are AAC Block Prices Quoted? 

AAC block prices are quoted in two main ways: per piece and per cubic metre (m3).

• Per Piece (MRP): This is common for smaller, retail purchases and is often seen on online marketplaces.
• Per Cubic Metre (m3): This is the industry standard for bulk orders. It provides a more accurate cost comparison, as it normalizes for the different sizes.

Conversion Example: For a standard 600 mm x 200 mm x 200 mm (8-inch) block: Volume = 0.6 m x 0.2 m x 0.2 m = 0.024m3 To calculate how many blocks make up one cubic metre: 1 m3 / 0.024m3/block ≈ 42 pieces This conversion is essential for comparing prices across different vendors who may use different quoting methods.

Size-wise Price Expectations (2025)

The following are typical retail price ranges in 2025. Please note these are illustrative and can vary based on the factors mentioned above.

4-inch (100 mm) AAC Block Price: Used primarily for non-load-bearing walls, internal partitions, and infill walls. These are the most affordable blocks on a per-piece basis.

Typical Retail Range (2025): ₹45 – ₹60 per piece.

6-inch (150 mm) AAC Block Price: A versatile option, suitable for both structural and non-load-bearing walls in residential and commercial buildings.

Typical Retail Range (2025): ₹65 – ₹85 per piece.

8-inch (200 mm) AAC Block Price: Ideal for external walls of buildings, especially high-rises, where sound and thermal insulation are critical. They are also used as load-bearing walls in many home designs.

Typical Retail Range (2025): ₹85 – ₹110 per piece.

Density/Grade & Price: Does 550 vs 650 change cost?

AAC blocks are available in different densities, typically ranging from 550 kg/m3 to 650 kg/m3.

• 550 kg/m3: Lighter, with better thermal insulation properties. They are often used for non-load-bearing applications where maximum thermal efficiency is desired.
• 650 kg/m3: Denser, with higher compressive strength (e.g., 4-5 MPa) suitable for load-bearing walls.

While the denser block may use slightly more raw material, the price difference is often minimal, as manufacturing processes are similar. The choice between the two is more about a project’s specific structural and thermal requirements than a major cost consideration.

Region-wise Factors: Why Gujarat ≠ Maharashtra ≠ Karnataka

Freight costs are a massive determinant of AAC block prices. Since AAC blocks are bulky and lightweight, transporting them over long distances adds a significant cost.

• Local Supply and Demand: Regions with a higher concentration of AAC block manufacturing plants (e.g., Gujarat and Maharashtra) may see more competitive pricing.
• Taxation and Demand Cycles: Local taxes and the state of the real estate and infrastructure markets (high demand from new housing or large-scale projects) also play a role in price fluctuations.

Here is a template for city-wise price bands, which you can use as a reference. Note that public portals often list “Price on Request” for bulk orders, and final quotes can vary from week to week.

City/Region	Typical Retail Price Band (per m3)	Lead Time (Approx.)
Mumbai/Thane	₹3,000 – ₹3,600	1-3 days
Pune	₹2,800 – ₹3,400	1-3 days
Ahmedabad/Surat	₹2,500 – ₹3,200	1-2 days
Bengaluru	₹3,200 – ₹3,800	2-4 days
Chennai	₹3,000 – ₹3,700	2-4 days
Delhi-NCR	₹2,800 – ₹3,500	1-3 days
Hyderabad	₹3,100 – ₹3,800	2-4 days

Also Read: What Are AAC Blocks?

Conclusion

Understanding the pricing of AAC blocks in 2025 requires looking beyond a simple per-piece number. By considering the size, density, brand, and, most importantly, the region and freight costs, you can make an informed decision for your construction project. Always request a per-cubic-metre quote for an accurate comparison and factor in the overall cost savings on labor, cement, and structural steel that AAC blocks provide.

Don’t let material costs or logistics slow down your project. BigBloc Constructions helps you source high-quality AAC blocks, block jointing mortar, and ready mix plaster, delivered on time, at the right cost. From planning to execution, we ensure a seamless, cost-efficient construction experience. Get Your Quote Today – let’s turn your project vision into reality with precision and quality.

FAQs

Q: What is the price of a 600×200×200 AAC block in 2025?

A: The price for a single 600 mm x 200 mm x 200 mm block typically ranges from ₹85 to ₹110. For bulk orders, the price is often quoted per m3, with approximately 42 blocks per m3.

Q: Which is cheaper: AAC or red brick in 2025?

A: On a per-piece basis, a red brick is cheaper. However, AAC blocks are significantly cheaper in the overall construction cost. Their larger size means fewer blocks are needed, reducing labor, mortar, and plaster costs. The lightweight nature also reduces the dead load on the structure, leading to savings on steel and concrete.

Q: Does density (550/650) change price and performance?

A: Yes. The primary performance difference is in strength and insulation. The lighter 550 kg/m3 block has better thermal insulation, while the denser 650 kg/m3 block has higher compressive strength. The price difference between these two grades is typically not significant, as the manufacturing process is similar.