top of page

Conversions and Extensions

How Much Does an Extension Cost?

Extension costs vary widely depending on factors such as the size and how you intend to use it. Smaller, less complex extensions tend to be the most affordable.

Here are some common extension types and their associated costs, from budget to mid-range and to luxury, as well as the time required to complete them:

EXTENSION TYPE

BUDGET (PER SQM)

MID-RANGE (PER SQM)

  LUXURY   (PER SQM)

TIME REQUIRED

Single-storey extension

£1,000 to £1,600

£1,700 to £2,000

£2,200 to £4,000 and up

8 to 10 weeks

Two-storey extension

£1,200 to £1,900

£2,000 to £2,200

£2,300 to £4,000 and up

12 to 16 weeks

Side return extension

£1,500 to £1,900

£1,900 to £2,200

£2,200 to £2,500

10 to 12 weeks

Glass Extension

£1,350 to £1,950

£1,800 to £2,300

£3,000 and up

10 to 12 weeks

Flat Pack Extension

£750 to £1,440

£1,275 to £1,800

£1,650 to £3,600

1 to 2 weeks

 

 

 

How Much Does a Garage Conversion Cost?

Estimated Garage Conversion costs by type, size, and budget:

GARAGE TYPE AND SIZE

BUDGET COST

MID-RANGE COST

TIME REQUIRED

Integral single garage

£5,000 to £7,500

£7,500 to £10,500

2 to 3 weeks

Integral double garage

£9,000 to £11,200

£11,200 to £15,700

3 to 4 weeks

Attached single garage

£13,400 to £16,700

£16,700 to £23,400

2 to 3 weeks

Attached double garage

£20,000 to £25,000

£25,000 to £35,000

3 to 4 weeks

Detached single garage

£30,000 to £37,500

£37,500 to £52,500

3 to 4 weeks

Detached double garage

£45,000 to £56,200

£56,200 to £61,800

4 to 5 weeks

 

How Much Does a Loft Conversion Cost?

A loft conversion typically costs between £28,000 to £65,000 to build, however, you could easily pay up to £75,000 if you want a particularly large conversion.

The estimated cost of a loft conversion by type and time required

CONVERSION TYPE

ESTIMATED COST

TIME REQUIRED

Roof Light or Velux Conversion

£28,000 to £49,000

4 to 7 weeks depending on size

Dormer Conversion

£35,000 to £75,000

6 to 9 weeks depending on size

Hip-to-Gable

£40,000 to £75,000

6 to 9 weeks depending on size

Mansard

£45,000 to £75,000

8 to 11 weeks depending on size

 

How Much Does a Kitchen Refurbishment Cost?

A kitchen Renovation will be the most difficult undertaking in terms of time spent and labour per square metre. They will also be the most expensive, considering all of the appliances and fittings you will need to purchase. This could include replacing floorings, windows, or knocking down walls to create an open space layout.

Average cost: £4,000 - £35,000

How Much Does a Bathroom Refurbishment Cost?

Bathroom refurbishments are labour-intensive with the biggest cost usually going on tiling and new bathroom fixtures.  Generally, the cost for a bathroom refurbishment will range from about £2,750 to over £7,500 for the basic (lower end of the scale) to luxury bathroom (£8k plus).

Average costs can range from: £2,750 - £12,000

How Much Does a Replacement Kitchen, Cost?

The cost for a new kitchen varies considerably depending on quite a few factors. The size of your kitchen, the condition it is in, as well as your desired materials can help to raise or lower your project’s fee.

 

Kitchen ITEMs

ESTIMATED SUPPLY COST

MDF kitchen units x 8

£900 to £2,000 (average cost £1,400)

Nickel effect doorknobs and handles

£2 to £15 each

Laminate Worktop

£90 to £250 per 3 metres

Laminate up-stand

£30 to £45 per 3 metres

Tempered glass splash back

£50 to £120 each

Stainless steel sink (single bowl)

£55 to £220 each

Chrome mono bloc tap

£55 to £180 each

Freestanding fridge freezer

£200 to £450 each

Electric Oven & Hob

£200 to £750 each

Cooker hood

£90 to £300 each

Dishwasher

£200 to £600 each

Washer/dryer

£300 to £550 each

Professional Labour fitting costs

£800 to £1,600 for 1 week of labour

Total estimated cost without appliances: from £1,386 to £3,505 including professional fitting costs.

Total estimated cost with appliances: from £2,376 to £5,905 including new appliances and professional fitting costs.

How much does an Orangery Extension Cost? 

The average cost of a single story extension that’s 20m² is between £30,000 and £60,000. Compared to this, an orangery of the same size at a cost of £25,000 is quite a bargain!

Though the largest, most decadent orangeries can easily cost over £100,000, on average, costs will vary between £25,000 and £60,000. The wide breadth in expense is down to the various factors involved, largely the size of the extension. For example, a 4m x 4m orangery with basic finishes should cost around £25,000.

How Much Does a Conservatory Extension Cost?

Conservatory Style

Estimated Cost From:

 

 

Victorian

£15,000 - £25,000

Edwardian

£15,000 - £25,000

Gable End

£15,000 - £25,000

P - Shape

£13,000 - £25,000

Lean To

£13,000 - £22,500

 

How Much Does a Bedroom Renovation Cost?

Bedroom renovations can be very cheap or very expensive, depending on how minimalist or grand you want it to be. Having an en-suite will definitely raise the price significantly.

Average cost for bedroom renovation is: £2,500 - £15,000

How Much Does a Living Room Renovation Cost?

Living Rooms are one of the more public/visible spaces in your home, so renovations here will certainly impress.

The average cost of a living room renovation is: £5,000 - £15,000

How Much Does an Outdoor Garden Makeover Cost?

From a simple grass garden to a patio, deck, and detailed landscaping, your garden renovation can rack up your bill.

The average cost of doing up your garden is: £2,000 - £50,000

Factors affecting House Renovation Costs

The list of jobs and costs for a house renovation can be long and be influenced by many factors.  Some of the main ones are:

  • Size of the property

  • Age and condition of the property

  • Complexity of renovation

  • Any structural work

  • Building extension work

  • Quality of materials, fixtures and finishing’s

  • Decoration

  • Where you live

How Much Does a 3 Bedroom House Refurbishment Cost?

Item

Cost range     

Average cost

 

 

 

New gas supply

£500    - £2,500

£1,500

New heating system

£2,500 - £8,500

£5,500

Rewiring

£4,000 - £7,500

£5,750

Windows

£2,500-£6,000

£4,250

Replaster walls

£1,500-£3,500

£2,500

Replaster walls & ceilings (re-skim existing)

£10,000 - £15,000

£12,000

 

Replaster walls & ceilings (hack off existing)

£20,000 - £28,000

£24,000

Replace skirting throughout

£2,200 - £3,800

£3,000

Paint walls & ceilings

£5,000 - £7,000

£6,000

 

New downstairs toilet & sink (including tiling)

£1,000 - £1,500

£1,250

New downstairs toilet & sink (including tiling)

£1,000 - £1,500

£1,250

New kitchen

£10,000 - £25,000

£17,500

French doors

£1,500 - £3,500

£2,500

 

Kitchen extension (12 m2)

£15,000 - £24,000

£19,500

 

Skirting for new extension

£200 - £500

£350

Bi-Fold Doors

£ 3000 - £12,000

£9,000

Knock down walls

£1,000 - £2,500

£1,750

 

 

TOTAL £76,900-£138,800 £107,350

Calculator

Call 

Email 

Follow

bottom of page