London regional pricing
How Much Does a Window Fitter Cost in Greenwich?
Updated prices for . Greenwich prices are typically 19% above the national average.
How many windows?
Per-window prices are multiplied by your quantity. Package prices and doors stay as shown.
Price summary
Greenwich Price Summary
| Service | Low | Average | High |
|---|---|---|---|
| Single Casement Window (uPVC) | £475 | £685 | £890 |
| Double Casement Window (uPVC) | £595 | £830 | £1,070 |
| Bay Window (3-Panel, uPVC) | £1,425 | £2,375 | £3,560 |
Prices include labour and materials. VAT may apply. Based on London regional pricing.
Full pricing
All Window Fitter Prices in Greenwich
Greenwich is in Greater London and window fitter costs here are 19% above the national average. Prices are based on real regional wage data from the Office for National Statistics.
| Job | Low | Average | High | Duration |
|---|---|---|---|---|
| Single Casement Window (uPVC) | £475 | £685 | £890 | 2-3 hours per window |
| Supply and fit a standard double-glazed window with one opening panel. This is the most common window type in UK homes — it can open from the top or from the side. All modern replacements are double-glazed with good energy ratings as standard. Price includes removing and disposing of the old window, fitting new trim around the inside, and sealing the outside. What affects the price
| ||||
| Double Casement Window (uPVC) | £595 | £830 | £1,070 | 2-4 hours |
| Supply and fit a wider double-glazed window with two opening panels side by side. Common in living rooms and bedrooms where you need a bigger window. Both panels open independently, and on first floors one usually needs to open wide enough to escape in a fire. Includes new trim and all sealing. What affects the price
| ||||
| Bay Window (3-Panel, uPVC) | £1,425 | £2,375 | £3,560 | 1 day |
| Supply and fit a three-panel double-glazed bay window. Bay windows stick out from the wall, usually with a fixed centre pane and two opening side panels at an angle. Price typically includes structural support, the small roof over the bay, and all internal finishing. This is a bigger job than a flat window because of the angles and weatherproofing involved. What affects the price
| ||||
| Sash Window Replacement (uPVC) | £710 | £1,070 | £1,425 | 3-4 hours |
| Supply and fit a plastic (uPVC) sliding sash window with double glazing, designed to look like traditional Victorian or Edwardian windows but with much less maintenance. The panels slide up and down like old-style sash windows. A good option if you want the classic look without repainting every few years. Note: if your home is in a conservation area, you may need to use timber instead — check with your council first. What affects the price
| ||||
| Sash Window Replacement (Timber) | £1,185 | £1,900 | £2,970 | 4-6 hours |
| Supply and fit a real wooden sliding sash window with double glazing. Timber sash windows are often required in conservation areas or listed buildings where plastic windows are not allowed. They are made to measure and arrive pre-painted. Hardwood options last longer but cost more than softwood. Expect to repaint them every 5-8 years. What affects the price
| ||||
| French Doors (uPVC Pair) | £950 | £1,365 | £1,780 | Half day |
| Supply and fit a pair of double-glazed French doors that open outward (or inward) from the centre. Popular for opening onto a garden or patio. Price includes a new frame, sill, internal trim, multi-point locks, and all handles. Available in white or coloured finishes, though non-white options cost more. What affects the price
| ||||
| Patio / Sliding Doors (uPVC) | £1,070 | £1,720 | £2,375 | Half day |
| Supply and fit double-glazed sliding patio doors. One panel slides behind the other, making them ideal where you do not have room for doors to swing open. Available in 2, 3, or 4 panel sizes. Wider openings cost more because of the bigger glass panels and heavier frames. Includes secure locking, new sill, and internal finishing. What affects the price
| ||||
| Bi-Fold Doors (3-Panel, Aluminium) | £2,970 | £4,450 | £5,935 | 1 day |
| Supply and fit 3-panel aluminium bi-fold doors with double glazing. These fold open like a concertina to create a wide opening between your home and garden. Aluminium frames are slimmer than plastic ones, giving you more glass and a modern look. Price includes the structural beam above the opening (if needed), threshold, secure locking, and all finishing. Plastic bi-folds are 20-30% cheaper but have thicker frames. What affects the price
| ||||
| Front Door Replacement (Composite) | £950 | £1,365 | £1,780 | 3-4 hours |
| Supply and fit a composite front door with a new frame, multi-point locks, and all handles. Composite doors have a solid core with a tough outer skin, making them more secure, better insulated, and longer-lasting than standard plastic doors. Available in a wide range of styles, colours, and glass designs. Look for doors with a security rating approved by police and insurers (often called 'Secured by Design'). What affects the price
| ||||
| Full House Window Replacement (3-Bed, 8 Windows) | £4,155 | £5,935 | £7,715 | 2-3 days |
| Supply and fit all windows in a typical 3-bedroom house (approximately 8 standard double-glazed windows). Price includes removing all old windows, fitting new trim, sealing, and a FENSA certificate (this proves the work meets building regulations — you will need it if you sell the house). Beware of pressure-selling window companies that quote eight to twelve thousand pounds for this same work — the realistic market rate is three and a half to six and a half thousand. Common high-pressure tactics include fake 'manager discounts' on the spot, limited-time pricing, and claiming you qualify for government grants you may not be eligible for. Always get at least three quotes from local FENSA-registered installers and never sign on the first visit. What affects the price
| ||||
| Glass Replacement (Single Sealed Unit) | £90 | £160 | £235 | 30-60 minutes |
| Replace just the glass panel inside an existing window frame — the frame stays in place. This is usually needed when you can see condensation or misting trapped between the two panes (meaning the seal has failed) or when the glass is cracked. Much cheaper than replacing the whole window. What affects the price
| ||||
| Secondary Glazing (Per Window) | £235 | £355 | £475 | 1-2 hours |
| Fit an extra panel of glass or clear plastic on the inside of an existing window to improve insulation and reduce noise. This does not replace the original window, which makes it popular in listed buildings or conservation areas where you are not allowed to change the windows. The extra panel can be fixed, sliding, or hinged so you can still open it. What affects the price
| ||||
| Roof Window / Skylight (Velux-Style) | £595 | £1,010 | £1,425 | Half day |
| Supply and fit a roof window (commonly called a Velux) including the weatherproof surround. The fitter cuts a hole in the roof, removes tiles, and fits the window between the rafters. Price assumes a straightforward installation without any structural changes needed. Electric or solar-powered versions that open by remote cost more but are worth it if the window is hard to reach. What affects the price
| ||||
| Window Repair (Hinges, Locks, Handles) | £60 | £120 | £180 | 30-60 minutes |
| Fix a window that will not close properly, lock securely, or has a broken handle. Common repairs include replacing hinges, fitting new handles, fixing or replacing the locking mechanism, and re-aligning panels that have dropped. Much cheaper than a full window replacement and usually done in a single visit. What affects the price
| ||||
Single Casement Window (uPVC)
Low
£475
Average
£685
High
£890
2-3 hours per window
More details
Supply and fit a standard double-glazed window with one opening panel. This is the most common window type in UK homes — it can open from the top or from the side. All modern replacements are double-glazed with good energy ratings as standard. Price includes removing and disposing of the old window, fitting new trim around the inside, and sealing the outside.
What affects the price
- Window size (standard 600x900mm vs larger openings)
- Access difficulty and floor level (ground floor vs upper storey)
- Removal and disposal of old window and frame
- Whether scaffolding is needed for upper floors
Double Casement Window (uPVC)
Low
£595
Average
£830
High
£1,070
2-4 hours
More details
Supply and fit a wider double-glazed window with two opening panels side by side. Common in living rooms and bedrooms where you need a bigger window. Both panels open independently, and on first floors one usually needs to open wide enough to escape in a fire. Includes new trim and all sealing.
What affects the price
- Frame width and overall window dimensions
- Opening mechanism (top-hung, side-hung, or tilt-and-turn)
- Whether scaffolding is needed for upper floors
- Building regulations compliance for fire escape egress
Bay Window (3-Panel, uPVC)
Low
£1,425
Average
£2,375
High
£3,560
1 day
More details
Supply and fit a three-panel double-glazed bay window. Bay windows stick out from the wall, usually with a fixed centre pane and two opening side panels at an angle. Price typically includes structural support, the small roof over the bay, and all internal finishing. This is a bigger job than a flat window because of the angles and weatherproofing involved.
What affects the price
- Number of panels and overall bay width
- Whether structural support or a new bay pole is needed
- Bay roof material (lead, GRP fibreglass, or tiles)
- Ground floor vs upper floor installation
Sash Window Replacement (uPVC)
Low
£710
Average
£1,070
High
£1,425
3-4 hours
More details
Supply and fit a plastic (uPVC) sliding sash window with double glazing, designed to look like traditional Victorian or Edwardian windows but with much less maintenance. The panels slide up and down like old-style sash windows. A good option if you want the classic look without repainting every few years. Note: if your home is in a conservation area, you may need to use timber instead — check with your council first.
What affects the price
- Window size and number of panes
- Conservation area restrictions on materials and design
- Weight system type (spring balance vs traditional cords)
- Timber vs uPVC suitability for the property
Sash Window Replacement (Timber)
Low
£1,185
Average
£1,900
High
£2,970
4-6 hours
More details
Supply and fit a real wooden sliding sash window with double glazing. Timber sash windows are often required in conservation areas or listed buildings where plastic windows are not allowed. They are made to measure and arrive pre-painted. Hardwood options last longer but cost more than softwood. Expect to repaint them every 5-8 years.
What affects the price
- Wood type (engineered softwood vs hardwood like Accoya)
- Conservation area or listed building requirements
- Custom sizing and glazing bar configurations
- Factory paint finish vs on-site decoration
French Doors (uPVC Pair)
Low
£950
Average
£1,365
High
£1,780
Half day
More details
Supply and fit a pair of double-glazed French doors that open outward (or inward) from the centre. Popular for opening onto a garden or patio. Price includes a new frame, sill, internal trim, multi-point locks, and all handles. Available in white or coloured finishes, though non-white options cost more.
What affects the price
- Overall width and height of opening
- Threshold type (low aluminium, part M compliant)
- Security lock specification (PAS 24 rated)
- Colour or woodgrain foil finish (adds 10-20%)
Patio / Sliding Doors (uPVC)
Low
£1,070
Average
£1,720
High
£2,375
Half day
More details
Supply and fit double-glazed sliding patio doors. One panel slides behind the other, making them ideal where you do not have room for doors to swing open. Available in 2, 3, or 4 panel sizes. Wider openings cost more because of the bigger glass panels and heavier frames. Includes secure locking, new sill, and internal finishing.
What affects the price
- Number of panels (2-panel, 3-panel, or 4-panel)
- Track system quality and smooth running gear
- Width of opening (wider = heavier glass, stronger frame)
- Security features (multipoint locks, anti-lift devices)
Bi-Fold Doors (3-Panel, Aluminium)
Low
£2,970
Average
£4,450
High
£5,935
1 day
More details
Supply and fit 3-panel aluminium bi-fold doors with double glazing. These fold open like a concertina to create a wide opening between your home and garden. Aluminium frames are slimmer than plastic ones, giving you more glass and a modern look. Price includes the structural beam above the opening (if needed), threshold, secure locking, and all finishing. Plastic bi-folds are 20-30% cheaper but have thicker frames.
What affects the price
- Number of panels (3, 4, or 5 — each extra panel adds cost)
- Frame material (aluminium vs uPVC — aluminium is premium)
- Total width of opening and structural requirements
- Fold configuration (all left, all right, or split opening)
Front Door Replacement (Composite)
Low
£950
Average
£1,365
High
£1,780
3-4 hours
More details
Supply and fit a composite front door with a new frame, multi-point locks, and all handles. Composite doors have a solid core with a tough outer skin, making them more secure, better insulated, and longer-lasting than standard plastic doors. Available in a wide range of styles, colours, and glass designs. Look for doors with a security rating approved by police and insurers (often called 'Secured by Design').
What affects the price
- Door style, colour, and glass panel configuration
- Security rating (PAS 24, Secured by Design)
- Whether a side panel or fanlight is included
- Multipoint locking system and handle style
Full House Window Replacement (3-Bed, 8 Windows)
Low
£4,155
Average
£5,935
High
£7,715
2-3 days
More details
Supply and fit all windows in a typical 3-bedroom house (approximately 8 standard double-glazed windows). Price includes removing all old windows, fitting new trim, sealing, and a FENSA certificate (this proves the work meets building regulations — you will need it if you sell the house). Beware of pressure-selling window companies that quote eight to twelve thousand pounds for this same work — the realistic market rate is three and a half to six and a half thousand. Common high-pressure tactics include fake 'manager discounts' on the spot, limited-time pricing, and claiming you qualify for government grants you may not be eligible for. Always get at least three quotes from local FENSA-registered installers and never sign on the first visit.
What affects the price
- Total number of windows and mix of types (casement, sash, bay)
- Whether scaffolding is needed (typically for 2+ storey properties)
- Building regulations approval (FENSA registration or local authority sign-off)
- Access difficulty and property type (detached, semi, terrace)
Glass Replacement (Single Sealed Unit)
Low
£90
Average
£160
High
£235
30-60 minutes
More details
Replace just the glass panel inside an existing window frame — the frame stays in place. This is usually needed when you can see condensation or misting trapped between the two panes (meaning the seal has failed) or when the glass is cracked. Much cheaper than replacing the whole window.
What affects the price
- Glass size and unit dimensions
- Glass type (standard float, toughened, laminated, low-e coated)
- Ease of access to the window
- Condition of the existing frame and glazing beads
Secondary Glazing (Per Window)
Low
£235
Average
£355
High
£475
1-2 hours
More details
Fit an extra panel of glass or clear plastic on the inside of an existing window to improve insulation and reduce noise. This does not replace the original window, which makes it popular in listed buildings or conservation areas where you are not allowed to change the windows. The extra panel can be fixed, sliding, or hinged so you can still open it.
What affects the price
- Window size and shape
- Frame type (aluminium, magnetic, or timber subframe)
- Opening mechanism (fixed, sliding, hinged, or lift-out)
- Condition and type of existing primary window
Roof Window / Skylight (Velux-Style)
Low
£595
Average
£1,010
High
£1,425
Half day
More details
Supply and fit a roof window (commonly called a Velux) including the weatherproof surround. The fitter cuts a hole in the roof, removes tiles, and fits the window between the rafters. Price assumes a straightforward installation without any structural changes needed. Electric or solar-powered versions that open by remote cost more but are worth it if the window is hard to reach.
What affects the price
- Window size (the most common sizes are 780x980mm and 780x1400mm)
- Flashing kit type (depends on roof tile profile — flat, profiled, or slate)
- Roof pitch and tile type
- Manual vs electric or solar-powered operation
Window Repair (Hinges, Locks, Handles)
Low
£60
Average
£120
High
£180
30-60 minutes
More details
Fix a window that will not close properly, lock securely, or has a broken handle. Common repairs include replacing hinges, fitting new handles, fixing or replacing the locking mechanism, and re-aligning panels that have dropped. Much cheaper than a full window replacement and usually done in a single visit.
What affects the price
- Type of repair needed (hinges, handles, locks, or seals)
- Availability of replacement parts for the window brand and age
- Window age and overall frame condition
- Number of individual faults to address
Step by step
What's Involved in Hiring a Window Fitting
Replacing windows involves choosing the right products, finding a trustworthy installer, and making sure the work complies with building regulations.
Decide what you need replacing
Work out which windows need replacing and why — failed sealed units (misting between panes), draughty frames, damaged mechanisms, or a general upgrade for energy efficiency. Sometimes only the glass units need replacing rather than the whole window, which is significantly cheaper.
Get quotes from FENSA-registered installers
Get at least three quotes from local installers registered with FENSA or CERTASS. These schemes mean the installer can self-certify that the work meets building regulations, saving you the cost and hassle of a separate council inspection. Be very cautious of large national companies that use high-pressure sales tactics and inflated prices.
Choose your window style and material
uPVC is the most popular and affordable option. Aluminium offers slimmer frames and a more contemporary look. Timber suits period properties but needs regular maintenance. For properties in conservation areas or listed buildings, there may be restrictions on what materials and styles you can use — check with your local planning department.
Survey and manufacture
The installer will visit to take precise measurements of every window opening. The windows are then manufactured to order, which typically takes 4-6 weeks. Any structural work needed (such as widening an opening for bi-fold doors) should be discussed at this stage.
Installation day
Each standard window takes 2-3 hours to fit. The fitter removes the old window and frame, checks the opening, fits the new window, insulates around it with expanding foam, and finishes with internal trim and external sealant. A full house of 8-10 windows typically takes 2-3 days.
Building regulations certificate and aftercare
Your installer should provide a FENSA or CERTASS certificate within 8 weeks confirming the work meets building regulations. Keep this safe — you will need it when selling your property. Most windows come with a 10-year guarantee covering the frames and sealed units. Report any issues with misting, draughts, or mechanisms promptly.
Regional comparison
How Greenwich Compares
Average cost of single casement window (upvc) across regions.
Local insights
What Affects Window Fitter Costs in Greenwich?
Greenwich's housing stock ranges from Georgian and Victorian terraces to post-war estates and modern new-builds, with a range of property types and ages that can affect the scope and cost of work across the borough. Properties in areas like Islington, Hackney and Brixton vary enormously in age, layout and condition, all of which directly affect window fitter costs. With a population of null, Greenwich is one of the more expensive areas for window fitter work in the UK. Older properties tend to need more preparation work and present access challenges that push prices toward the higher end — for example, double casement window (upvc) here averages around £830.
London is the most expensive part of the UK for trade work, with labour rates running around 24% above the national average. This reflects the high cost of living, congestion charges, and expensive parking that tradespeople factor into their quotes. In Greenwich, local demand for window fitter services varies depending on the mix of residential and commercial properties in the area, and there is no shortage of qualified window fitter professionals across the capital. With fewer tradespeople based locally, you may find slightly less choice, and it is worth booking ahead for larger jobs. Prices still vary by 30-50% between tradespeople for the same job, making multiple quotes essential.
Several factors affect what you will pay for window fitter work in Greenwich. The scope and complexity of the job is the biggest driver — straightforward work in accessible locations will be at the lower end, while anything involving older properties, difficult access, or structural complications will cost more. Material choices also make a significant difference; opting for premium brands or higher-spec products can add 20-40% to the total. As one of the more expensive areas for trade work, Greenwich residents typically pay around £685 for single casement window (upvc) and £4,155 to £7,715 for full house window replacement (3-bed, 8 windows).
When getting quotes in Greenwich, aim for at least three from different qualified professionals. With fewer tradespeople based locally, you may find slightly less choice, and it is worth booking ahead for larger jobs. Ask each one to visit and assess the work in person rather than quoting over the phone. A good window fitter will check the existing setup, identify any potential complications, and give you a detailed breakdown of costs. In a area like Greenwich, there is plenty of choice, so do not settle for the first quote you receive. Be wary of quotes that seem significantly cheaper than others — they may be cutting corners on materials or not including everything in the price. Always check qualifications, insurance and recent reviews before hiring.
Depending on the work involved, you may also need painting & decorating (£235–£770), carpentry (£85–£235), or handyman (£45–£140) in Greenwich.
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Common questions
Frequently Asked Questions
Common questions about window fitter costs in Greenwich.