Merton is one of those London boroughs that most people know by its neighbourhoods rather than its name. Say “Wimbledon” and everyone knows where you mean. Say “Merton” and you might get a blank look — even from people who live there. But Merton Council is the planning authority for the entire borough, and that includes some significantly different areas with very different window requirements.

Our windows are manufactured to your exact dimensions in your choice of timber — pine, meranti, or oak — then factory-finished and delivered anywhere in the borough. Installation is down to you and your joiner. See our made-to-measure timber windows guide.

Wimbledon

The borough’s most recognised area and the one with the strongest conservation controls. Wimbledon Village and the streets around the Common have strict protection under Merton Council. Victorian and Edwardian villas dominate, and sash windows are the standard expectation in conservation zones. We cover Wimbledon in detail on our dedicated Wimbledon page — including specific street references, Merton Council conservation requirements, and guidance on Victorian vs Edwardian window proportions.

Mitcham

Mitcham’s housing stock is more mixed than Wimbledon’s. There are Victorian terraces around the Cricket Green conservation area — one of the oldest cricket grounds in the world — but much of the wider area is inter-war and post-war housing where flush casement windows are more appropriate than sashes. The Cricket Green area has conservation area status, so timber is expected there. Outside it, the choice is more about quality and aesthetics than planning requirement.

Morden

Predominantly 1930s semi-detached houses built along the Northern Line extension. Morden’s housing stock is remarkably consistent — bay-fronted semis with original metal Crittall-style windows that many homeowners are now replacing with timber for better thermal performance. Flush casement windows suit these properties. Morden doesn’t have significant conservation area coverage, so there’s more flexibility in specification.

Colliers Wood & South Wimbledon

A mix of Victorian terraces (particularly around the edges of Wimbledon) and inter-war housing. Some properties fall within the Wandsworth/Merton border area. If you’re near the boundary, check which council manages your planning — it affects which conservation rules apply.

All window replacement across the borough — Wimbledon, Mitcham, Morden, Colliers Wood — goes through Merton Council (merton.gov.uk). Here’s how the process works:

Step 1: Check your conservation area status. Search your postcode on Merton Council’s planning portal. This tells you if your property sits inside a conservation area and if any Article 4 directions apply.
Step 2: Determine what’s required. In conservation areas, Merton expects timber windows matching the originals. Outside conservation areas, permitted development rights usually apply — you can replace windows without formal permission as long as the new ones are similar in appearance.
Step 3: If you need planning permission (listed buildings, Article 4 areas, or changes to appearance), submit an application to Merton Council. Typical processing time: 8 weeks for standard applications. Include your window specification — material, profile, glazing pattern, colour.
Step 4: Order after approval. Once you have written approval specifying what’s acceptable, order your windows to that exact specification. We can manufacture to whatever Merton Council requires.

This sounds bureaucratic, but it’s actually protecting you — it means your new windows have formal approval and no one can require you to change them later.

Sash windows — the choice for Wimbledon’s Victorian/Edwardian properties and Mitcham’s Cricket Green area. From £449+VAT. Double glazing standard.
Flush casement windows — suited to Morden’s 1930s semis and Colliers Wood’s mixed stock. Clean profile, multipoint locking.
Georgian style — for the grander properties around Wimbledon Village and the Ridgway.

All built to BS 644 in engineered pine, meranti, or oak. Part L compliant with double or triple glazing.

Confusing Merton Council requirements with Wimbledon-specific expectations. Wimbledon Village has strict conservation controls. Morden doesn’t. The requirements vary significantly across the borough — don’t assume what applies in one area applies everywhere.
Assuming the same window spec works across the whole borough. A Victorian sash for Wimbledon is a completely different product from a flush casement for Morden. Get the style right for YOUR area.
Not checking which conservation area you’re actually in. Merton has multiple conservation areas, each with slightly different guidance. The Cricket Green conservation area in Mitcham has different expectations from the Wimbledon Village conservation area.
Ignoring Mitcham’s different housing stock. Mitcham has genuine period properties around the Green that deserve proper timber windows — but also has areas where casement windows are more appropriate and more cost-effective.

1. Check your area — which part of Merton? Conservation area? Check merton.gov.uk

2. Quote online — five minutes, instant pricing

3. Confirm spec — we verify everything before manufacturing

4. Delivery — 6-8 weeks to your Merton address

For Wimbledon specifically: see our detailed Wimbledon page. Adjacent boroughs: Wandsworth, Kingston, London hub. Q&A. Glossary. Listed buildings.

Does Merton Council cover window planning for Wimbledon?

Yes — Merton Council is the planning authority for the entire borough including Wimbledon. All conservation area enforcement and planning applications go through merton.gov.uk.

Do I need timber windows in Mitcham?

In the Cricket Green conservation area, yes — Merton Council expects timber matching the originals. Outside conservation areas, timber isn’t strictly required but remains the best choice for period properties around the Green.

What window type suits 1930s Morden semis?

Flush casement windows work best for Morden’s inter-war housing stock. They provide clean lines that suit the era, modern locking, and good thermal performance. Prices start from £449+VAT.

How long does Merton Council planning take?

Standard planning applications take approximately 8 weeks to process. For listed buildings or properties in conservation areas with Article 4 directions, allow extra time. Apply before ordering windows.

What’s the difference between your Merton and Wimbledon pages?

The Merton page covers the entire borough — Wimbledon, Mitcham, Morden, and Colliers Wood. The Wimbledon page focuses specifically on the Wimbledon area with detailed conservation guidance and street-level information.