Alliance Maintenance Services
House Extensions

Extensions That Transform How You Live.

Single-storey, rear, side and open-plan extensions across Greater Manchester — designed, built and finished by one trusted team.

About Our Extensions

From foundations to finished interior.

We handle every stage of an extension — design and planning support, foundations, brickwork, steels, roofing, glazing, plastering and joinery. All aspects of joinery undertaken in-house, with one point of contact and one project manager. Built properly so it adds real value to your home.

Fully Insured
Free Quotes
Quality Materials
Professional Install
10-Year Guarantee
Local Family Team
Extension Types

Every kind of extension, all aspects covered.

Single-Storey Extensions

Add a kitchen-diner, family room or utility — most permitted-development friendly.

  • Foundations to finish
  • Steels & structural calcs
  • Building Regs handled

Rear Extensions

Open up the back of the house with bi-folds or sliding doors onto the garden.

  • Up to 6m projection
  • Glazed roofs & skylights
  • Brick or render finishes

Side Extensions

Fill in the side return or wrap around for a larger ground floor.

  • L-shape and wrap-around
  • Matches existing brickwork
  • Maximises kitchen space

Open-Plan Living Spaces

Knock through and open up — kitchen-diner-living with steels and structural alterations.

  • Removing internal walls
  • RSJ / steel beams installed
  • Structural calcs included

Structural Alterations

Load-bearing wall removals, lintels, beams and openings to existing properties.

  • Building Control sign-off
  • Steels supplied & fitted
  • Plastered finish ready
Why Choose Us

All trades in-house. One team. One price.

Full Project Management

Foundations, brickwork, roof, glazing, plastering — one team.

Building Regs Handled

We manage Building Control and structural calcs.

Fully Insured

Public & employers' liability, plus 10-year guarantee on build.

Bi-Folds, Sliders & Skylights

Integrated glazing for light-filled extensions.

Quality Finish

Brickwork, plastering and joinery to a premium standard.

Real Value Added

Properly built extensions add measurable value.

Gallery

Recent Work

Rear Extension with Anthracite Bi-Fold Doors
Single-Storey Rear Extension — Brickwork & Blockwork
Foundations & Sub-Base — Milnrow Extension
Indian Sandstone Patio & DPC Detail
Open-plan rear extension
Kitchen extension with skylights
FAQs

Frequently Asked Questions

Free Quote

Get a quote for Extensions.

No pressure, no obligation — just honest advice from a family-run team.

Ready To Improve Your Home?

Speak directly with a member of the family-run team.

No call centres, no scripts. Just honest guidance from the people who'll be doing the work.