Does Secondary Glazing Add Value to Your Home When You Sell?

If you are planning to sell in the next few years, it is fair to ask whether secondary glazing is money well spent. No single improvement adds a fixed amount to a house price, and anyone promising one is guessing. But secondary glazing can make a home easier to sell and help it compete, particularly in London's period housing.

Why It Matters to Buyers

• Original features stay. In Victorian, Georgian and Edwardian homes, original sash windows are a selling point. Ripping them out for uPVC can put off buyers and, in conservation areas, may not be allowed. Secondary glazing keeps the original windows on show.
• Warmth and running costs. Buyers now look closely at energy bills. A home that is not draughty is more appealing during winter viewings.
• Quiet. On busy roads, near railways or under flight paths, a quiet bedroom can be the difference between an offer and a pass.

EPC Ratings

An EPC is required when you sell, and the rating is shown on property listings. Window improvements are one of the factors assessors consider, so better glazing can help a borderline rating. Only an accredited assessor can confirm the effect. For landlords, minimum EPC rules make this even more important; see EPC ratings and windows.

Surveys and Listed Buildings

Buyers' surveyors often flag rotten or draughty windows. Secondary glazing does not fix rot, so repair the primary windows first, but well-fitted units show the home has been looked after. In listed buildings, using a reversible, approved approach avoids awkward questions about unauthorised alterations. See secondary glazing in listed buildings.

Is It Worth Doing Before You Sell?

If you are selling within months, focus on the rooms that matter most: the main bedroom on a noisy road and the living room. If you are staying a few years, you also get the lower bills and comfort yourself. Our is secondary glazing worth it guide covers the payback in more detail.

Frequently Asked Questions

Does secondary glazing increase property value?

It can make a home more attractive and help with EPC ratings and noise, which supports the price. The exact effect depends on the property and local market.

Do buyers like secondary glazing?

Modern slimline units are discreet and generally well received, especially when they protect original windows. Old, bulky units can look dated, so replacing them before selling may be worthwhile.

Does the guarantee pass to the buyer?

Some guarantees transfer to a new owner. Check the terms, and see our guarantees and aftercare guide. For prices, see the cost guide.