Timber - PVC - Aluminium - Windows, Doors & Conservatories in Hampshire
How much do windows and doors cost?
How much do windows and doors cost?
Category: Buying Advice & Guidance
Reading Time: 4 Minutes
📌 The 30-Second Summary
- The “National” Premium: Large national companies can charge up to 50% more than local installers simply to cover massive marketing budgets and salesperson commissions.
- Benchmark Costs: A standard 1200mm x 1200mm fully-fitted uPVC window starts around £700, while a typical whole-house replacement ranges from £8,000 to £10,000.
- The Materials Matter: From standard white uPVC to premium Residence 9 heritage frames and genuine Sapele timber, your choice of material drastically dictates the final cost.
- The KJM Promise: We do not inflate prices just to offer fake “Sign Today” discounts. We quote our best price the first time around.
If there was ever a ‘million-dollar question’ in home improvement, this is probably it: How much should you actually pay for new windows and doors?
Take three quotes from three different companies, and you will quickly notice that price differentials can range from just a couple of hundred pounds to thousands. It is incredibly frustrating for homeowners trying to budget for a renovation.
Am I dodging the question? Perhaps a little, because there is no ‘average’ house, and it’s incredibly difficult to draw up a flat comparison. However, in this guide, we will break down exactly why these disparities exist, provide you with benchmark costs, and explain what you are truly paying for.
Table of Contents
1. Why Do Quotes Vary So Much? The Overhead Factor
The first and often most significant contributory factor comes down to simple business overheads. Big national players generally have bigger costs, and they have to build these into their pricing structure—this almost always includes hefty salesperson commissions and massive television marketing budgets.
The advantage of buying windows and doors from large national retailers is that they have been around for a while, can be expected to survive in the future, and will underwrite their work with a warranty. However, some companies’ warranties have more holes in them than a colander, so you must always read the small print!
In most cases, national companies will be installing very similar, if not exactly the same, window and door profiles as smaller independent suppliers. Local companies won’t have the same bloated overheads and have the flexibility to be significantly more competitive. The risk with a very small “man in a van” business, however, is that they might be swallowed up by another company or close their doors entirely, leaving you with no redress if there is a problem.
Where KJM Group Sits
We like to think that KJM Group sits perfectly in the middle. We have been established since 1983, operating across Hampshire and the adjoining counties. We do not share the massive overheads of national companies, which means our customers only pay for the quality of the product and the finish—but with the peace of mind of a long-established, stable business honoring your warranty.
2. Benchmark Window Replacement Costs
Because there are so many variables (sizes, styles, openings, and Low-E glass specs), getting to grips with pricing is difficult. However, we believe in transparency, so here are some realistic benchmark costs to help you budget.
| Project Scope | Estimated KJM Guide Price (Inc. VAT) |
|---|---|
| Standard Replacement Window (1200mm x 1200mm, 2 trickle vents, egress hinges, dog bolts, cill & full installation) |
~£700 |
| Full House Replacement (Standard 3-Bed Semi-Detached House) |
£8,000 – £10,000 |
| Full House (National Installer) (The exact same volume of work from a large national brand) |
Can charge up to 50% more (approx £12,000 – £15,000+) |
3. How Material Choice Impacts Price
The other major factor dictating your final quote is material choice. Even at an entry-level—the sometimes under-valued white uPVC window—there can be huge differentials in quality. This extends from the number of energy-efficient internal chambers to the quality of the hardware and weather sealing.
At KJM, we offer one of the region’s widest ranges of energy-efficient double and triple-glazed systems. Your price will vary depending on which tier you choose:
- Standard uPVC: Leading systems from Veka and Profile 22, available in white or a wide choice of woodgrain and colour finishes.
- Premium Heritage (The Residence Collection): We offer premium heritage windows from Deceuninck, Residence 9 (R9), and the highly sought-after Residence 7 (R7). These products use traditional foils, mechanical jointing, and hand-finishing to bridge the gap between modern uPVC and traditional timber.
- Genuine Timber: If you prefer the real thing, we supply wooden sliding sash windows and flush casements tailor-made by craftsmen in Sapele hardwood, oak, softwood, or Accoya timber.
- Aluminium: Sleek, modern, and highly thermally stable—perfect for wide-span aluminium windows and bifold doors.
4. The KJM Pricing Promise (No Fake Discounts)
Whatever your price point, you need to ensure you are comparing like-for-like quotes. That means the same window system, the same energy specification, and the same quality of service and warranty.
⚠️ Will KJM discount our prices if you push?
For the record, no. We would much rather work with you, price exactly what you want, and give you our very best price the first time around.
We do not inflate our initial quotes just to offer you a fake “Sign Today” discount. The honest price we give is the price that allows us to ensure we’ll be here in the future, employ skilled fitting teams, and continue delivering the standard of service our customers have come to expect.
Remember, all KJM quotations are completely free and hassle-free—that is a cast-iron promise.
For more information, or to request a quote, email [email protected] or call our Andover showroom on 01264 359355.
5. Frequently Asked Questions
As a general benchmark, a standard 1200mm x 1200mm window (including two trickle vents, egress hinges, dog bolts, a cill, and full installation) is currently around £700 including VAT.
For a full house replacement with KJM, our guide price usually falls between £8,000 and £10,000. It’s worth noting that large national companies can charge up to 50% more for the exact same volume of work.
The biggest factor is overheads. National companies have massive marketing budgets, large infrastructure, and high salesperson commissions built into their pricing. Local, established companies like KJM bypass these overheads, allowing us to install the exact same quality products for a much more competitive price.
Mark Pearce is a highly experienced specialist in the double glazing industry, having built his knowledge from the ground up through hands-on experience in installation, manufacturing, sales, and business management. Beyond his role at KJM, Mark is a keen blogger, writer, and traveller, often sharing insights on the latest innovations in the home improvement industry.
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