Window & Door Cost Guide | Transparent Trade Pricing
At Window Fitters Ltd, we believe in complete pricing transparency. Whether you are a homeowner upgrading your property, a landlord managing refits, or a commercial main contractor, understanding the cost structure is essential for budget planning. We focus on providing highly competitive, certified glazier and installation labour rates across London, Surrey, and surrounding areas.
Our Service Models: Sourcing & Installation Flexibility
To match your procurement route and budget, we offer two main service structures for all projects:
- Supply and Fit Service: A turnkey package. We manage the entire project-from taking precise laser measurements to sourcing premium A-rated frames, double glazing, and security hardware directly from leading UK manufacturers at trade prices, followed by professional installation.
- Installation Only Service: If you have already sourced your own frames, glass units, or doors, you can hire our specialist teams for fitting. We handle the unloading, weather-proofing, alignment, and secure installation of your pre-purchased products.
Indicative London & Surrey Labour Rates
Because material costs fluctuate based on frame specifications, glass configurations, and custom hardware, we break down our charges by transparent labour rates. Below is a guide to our standard 2026 operational rates:
General Call-Out & Day Rates
| Rate / Charge Type | Price Range (Excl. VAT) | Details |
|---|---|---|
| Standard Hourly Rate | £75 - £95 per hour | Applies to small repairs, hardware replacements (hinges, locks), and alignments. |
| Minimum Call-Out Charge | £150 | Covers the initial diagnostic visit and includes the first hour of on-site labour. |
| 2-Person Fitter Team (Day Rate) | £600 - £750 per day | Most cost-effective for multi-window domestic refits and whole-house installations. |
| Emergency Boarding & Glazing (Out of Hours) | From £180 per hour | Rapid property boarding-up and security securing. First hour charged in full. |
B2B & Commercial Structural Pricing Matrix
| Service Category | Turnkey "Supply & Fit" (Est. Starting Price) | Labour Installation Only (Est. Starting Price) | Est. Turnaround | UK Building Regs / Compliance Standards |
|---|---|---|---|---|
| uPVC Casement Window | From £650 per unit | From £300 per unit | 2 - 3 hours | Document L (U-value ? 1.4 W/m²K), Document F (Trickle ventilation), PAS 24 |
| Sliding Sash Window | From £1,100 per unit | From £450 per unit | 3 - 5 hours | Document L (U-value ? 1.4 W/m²K), Document K (Safety glass), Document F |
| Aluminium Window | From £850 per unit | From £350 per unit | 3 - 4 hours | Document L (U-value ? 1.4 W/m²K), Document K, Document F, Polyamide Thermal Breaks |
| Composite Entrance Door | From £1,450 per unit | From £400 per unit | 3 - 4 hours | Document Q (Security / PAS 24), Document L (U-value ? 1.4 W/m²K), Document K |
| Aluminium Bifold Doors | From £3,800 per set (3-pane) | From £900 per set | 1 day | Document Q (PAS 24), Document K (BS EN 12150 Toughened Glass), Document L |
| Certified Fire Doorset (FD30/S) | From £950 per doorset | From £350 per doorset | 3 - 5 hours | Document B (Fire Safety), Document M (Access), BS 8214, BS EN 1154 Closers |
| Misted Double Glazing swap | From £280 per unit (glass incl.) | From £180 per unit (labour only) | 1 - 2 hours | Document L (U-value ? 1.4 W/m²K), Document K (Toughened safety glass in zones) |
| Curtain Walling / Shopfronts | Bespoke Quote / Tender | From £450 per man-day | Project-based | Document L, Document K (BS EN 12150 Safety Glass), JCT contracts & site RAMS |
What is included in Supply and Fit pricing? All turnkey estimates include: PAS 24 / Secured By
Design compliant hardware, toughened or laminated safety glass in critical zones (Document K), correctly specified
trickle vents (Document F), Part M low-threshold door options where required, a 10-year fabricator warranty, and
professional fitting with all fixings, sealant, and expanding foam. Our standard uPVC profile systems
achieve whole-window U-values (Uw) between 1.2 and 1.4 W/m²K, while our high-performance triple-glazed and alu-clad options achieve U-values between 0.64 and 0.94 W/m²K.
Estimated Lead Time: Standard uPVC projects are typically installed 2 to 3 weeks
from confirmed order.
Multi-Unit & Volume Discounts
Installing multiple windows or doors in a single project visit significantly reduces the per-unit labour cost. Because transport, site set-up, scaffolding, and safety preparations are consolidated, we offer scaled discounts:
- 3-5 Units: Lowers the overall per-unit labour cost by 10% - 15%.
- 6+ Units: Transitioning to our flat fitter team day rates can reduce average installation costs by up to 25% compared to single-unit pricing.
- Large Residential / Commercial Projects: Custom fixed-price packages and tender structures are available upon survey.
Key Factors Influencing Your Project Cost
While the rates above represent standard installation conditions, several factors can affect final project pricing:
- Access & Scaffolding: Ground floor installations are faster and cheaper. Upper floors requiring scaffolding, mechanical lifts (IPAF), or specialized access equipment will incur additional logistics charges.
- Structural Openings: Replacing an existing window in a stable opening is straightforward. Creating new structural openings (knocking through brickwork) or installing structural lintels increases the complexity, time, and structural engineering compliance checks.
- Building Control & Regulations: Although we do not hold FENSA registration, we coordinate directly with local authority building control to ensure all window and door installations are fully inspected and certified for thermal efficiency (U-values) and safety glass compliance.
- Specialist Consumables: Heavy glazing units, high-security multi-point locks, and custom structural fixings require specialist sealants and consumables which are included in our detailed project estimates.
For a fully itemised, transparent quotation tailored to your specific architectural drawings or project requirements, use our interactive Window & Door Survey Designer to upload your plans and prepare your measurements online, or contact our London and Surrey installation team today.
About the Author: Marian Gheorghe
Head Window Fitter & Active Director, Window Fitters Ltd
Marian Gheorghe is the Head Window Fitter and Active Director of Window Fitters Ltd. With over 15 years of hands-on experience in the glazing and glazing industry across London, Marian leads the direct-employment labour force and oversees technical safety compliance for all residential and commercial JCT contracts.
Author & Technical Reviewer: Marian Gheorghe
Head Installer & CEO, Window Fitters Ltd
Marian Gheorghe is the Active Director and Team Leader Installer at Window Fitters Ltd. With over 15 years of hands-on experience, he oversees technical safety and UK Building Regulations compliance for all residential and commercial glazing contracts.
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Window Fitters Ltd installs windows, doors, fire doors, and commercial glass facades across London and Surrey. Croydon head office, 40-mile service radius, 100% directly employed CSCS-carded fitters.
Our estimators respond within 24 business hours with a fixed-price quotation.
Verified Google & MyBuilder Reviews
"Stunning Sash Windows in Croydon"
"Marian and his team replaced our old Victorian sash windows. They were clean, fast, and the double glazing has completely blocked out the street noise. Highly recommended!"
"Excellent Bifold Doors in Bromley"
"Installed beautiful grey aluminium bifold doors for our new kitchen extension. Smooth gliding mechanism and great insulation. The best quote we got in Kent."
"Perfect Front Door Upgrade in Sutton"
"Very happy with our new composite door installation. Excellent lock security and high-quality GRP slab finish. Fast half-day fitting and no mess left behind."