Is an Extension or Conservatory Cheaper?

Is an Extension or Conservatory Cheaper? Your Guide to Cost-Effective HomeImprovements

If you’re dreaming of more space at home but not sure where to start, you’re not alone. Many UK homeowners find themselves weighing up whether to add a full extension or opt for a conservatory. Both options can transform your living space, but which is truly the more budget-friendly choice? Below, we break down the real costs, value, and practicalities so you can make the best decision for your home and pocket.

Understanding the Basics: Extension vs Conservatory

Before diving into the pounds and pennies, it’s worth clarifying what these home improvements offer. A conservatory usually features large windows or even glass walls and a glass roof, making it a light-filled addition that’sperfect for lounging, dining or even setting up a home office. An extension, on the other hand, tends to be a solid, fully integrated structure – essentially a new room built into your existing home, with traditional walls and roof.

What’s More Affordable – Extension or Conservatory?

When it comes to cost, conservatories almost always come out on top as the more affordable route. On average, a simple conservatory will cost between £10,000 and £25,000 depending on size, materials, and roof choice. A basic extension of similar size, however, often starts from £30,000 and can easily reach £50,000 or more with fittings, finishes, and the all-important building regulations.

Why the difference? Building an extension is far more involved, requiring significant groundwork, robust foundations, roofing, insulation, and often plumbing and electrics as well. With a conservatory, much of the structure can be prefabricated and installed in days, reducing labour costs and time on site.

Key Cost Differences: What Are You Paying For?

It’s not just materials and size that dictate costs. Here are a few essential factors to consider:

  • Planning Permission and Regulations: Generally, conservatories are a simpler process and can often be built under permitted development rights, meaning fewer headaches – and potential savings on fees.
  • Insulation and All-Year Use: Extensions offer excellent thermal insulation, so you get comfortable use year-round. Many budget-friendly conservatories can be chilly in the winter and warm in summer unless you choose high-quality glazing and roofing solutions.
  • Internal Finishes: Extensions usually require more internal finishing, a cost often overlooked at the start. Flooring, plastering, painting, and proper heating all add up.
  • Speed of Installation: Conservatories can be up and ready to enjoy in a matter of weeks, while extensions may take several months from foundations to finishing touches. Less time means less money spent on labour.


For those seeking rapid results with less disruption, conservatories are simply the cost-effective winner. If you’re curious about options in your area, explore a range of
conservatories Hertfordshire for stylish and affordable inspiration.

Which Option Adds More Value to My Home?

It’s natural to want your investment to pay off. Extensions generally offer more in terms of property value – estate agents estimate that a well-executed extension can add up to 20% to your home’s market price as it increases the number of usable rooms and integrates seamlessly with the existing structure.

Conservatories, while attractive and great for lifestyle, add less – usually between 5-10%, mainly because the space isn’t always considered a “full” living room by potential buyers or surveyors. That said, a beautiful, modern conservatory can make your home stand out and sell faster, especially if it incorporates quality features like energy efficient glazing or appealing windows and doors Hertfordshire.

Practical Considerations: Choosing What’s Right for You

Cost is important, but so is comfort and convenience. Ask yourself:

  • What will you use the space for? If you need a full-time bedroom, larger kitchen, or office, an extension may be worth the extra spend.
  • How often will you use the new area? If you want a light-filled lounge for mornings and summer evenings, a conservatory is ideal.
  • What’s your budget? For many, a conservatory offers a fantastic upgrade with less financial strain, while extensions are a larger upfront investment but with bigger potential rewards.


Quality matters too. Modern conservatories and extensions both benefit from energy-efficient glazing and doors. Always invest in reputable installers to guarantee comfort, durability and peace of mind, like Clearview2000.

Ready to Expand? Get Expert Advice

Choosing between a conservatory and an extension can feel daunting, but you don’t have to work it out alone. At Clearview 2000, we pride ourselves on honest advice and quality workmanship, tailored to your budget and needs. If you’re interested in creating more space, boosting kerb appeal or just learning more about conservatories and extensions, contact us for a friendly, no-obligation chat.

Summary: Cost, Value, and Lifestyle – Find Your Best Fit

To sum up, if you’re looking for the most cost-effective way to add extra room and fresh light to your home, a conservatory is usually cheaper and quicker to install. For maximum value and fully integrated space, an extension is the way to go, just be ready for a greater investment. The best choice depends on your plans, your house, and your budget.

No matter what you decide, Clearview 2000 is here to help you experience the difference with expert guidance and top-quality home improvements. Get in touch today and let’s make your home dreams a reality!

Showroom Location – Unit 2 Kestrel Court, Bridgefields, Welwyn Garden City, Hertfordshire, AL7 1AH
Speak to our friendly team – 01920 466 151
Email us at – office@clearview2000.co.uk

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