Concrete blocks for a house extension in Manchester cost between £1.50 and £3.50 per block, depending on type. For a standard 20m² extension, materials alone usually cost between £600 and £1,400 before mortar, delivery, and labour. What you pay mostly comes down to which and how many blocks you need.
Block Prices at a Glance
Block Type
Cost per Block
Blocks per m²
Est. Cost per m²
Typical Use
Dense Aggregate
£1.50 to £2.20
10
£15 to £22
Foundations, load-bearing walls
Lightweight Aggregate
£1.80 to £2.80
10
£18 to £28
Internal walls, upper floors
Aerated (aircrete)
£2 to £3.50
10
£20 to £35
Inner leaf, partition walls
Bigger orders cost less per block. If you're buying for a full extension, it's worth getting a trade price instead of paying counter rate.
Key Factors That Affect the Cost
Several different ways can impact how expensive or inexpensive this project can be:
Replacing your fence is one of those tasks that can sound relatively simple, but when you realise the multitude of fencing options for gardens, prices can rise, and picking the correct combination is key.
If you’re looking for the best choice between overlap and feather edge, timber posts and concrete, or whether or not you need gravel boards, read on.
Fence Types at a Glance
Fence Type
Lifespan
Cost Tier
Best For
Overlap panel
5 to 10 years
Budget
Rental properties, short-term use
Feather edge
15 to 25 years
Mid to Premium
Most Manchester gardens
Concrete post and gravel board setup
25+ years (posts)
Mid to Premium
Long-term, low maintenance installs
Trellis top panel
10 to 15 years
Budget to Mid
Decorative finish over solid base
Best Option for Manchester Gardens
A feather edge panel with concrete posts and a concrete gravel board is usually the best option for most gardens in Manchester. It handles wind and wet ground far better than a standard overlap setup, lasts significantly
