Double-storey extensions in Netherton

Double-storey extensions in Netherton: approvals and local details

Most two-storey extensions in Netherton need a planning application to Dudley Council. A two-storey rear extension can sometimes be permitted development, but only if it is no more than 3 m deep and at least 7 m from the rear boundary, among other conditions. Building Regulations approval is needed either way.

Councils often expect a side extension's first floor to be set back from the front wall, with its roof below the main ridge.
A side extension of more than one storey always needs a householder planning application.
The householder planning fee in England is £548 from April 2026, paid to Dudley Council when you apply.

Postcode district: DY2
Planning and building control: Dudley Council
From our West Bromwich base: 4 miles

Choices to weigh up in Netherton

Building over an existing extension

Adds a first floor on top of an existing single-storey extension or attached garage. It can cost less because the footprint already exists, but a structural engineer must check the existing foundations and walls first, and they sometimes need strengthening. The old flat roof comes off and the new floor is tied into the main house.

Mixed-height extension

A two-storey section at the side with a single-storey section running across the back. This keeps the first floor away from neighbours' windows while still giving a wide kitchen-diner below. It's a practical compromise where planners have concerns about a full-depth two-storey rear extension, and it often simplifies the roof.

Double-storey extensions prices in Netherton

For a home in Netherton, our guide range is £52,000–£135,000 depending on size and specification. A two-storey side extension on a three-bed semi, about 32 m² over two floors: usually £68,000–£88,000.

Guide prices for double-storey extensions
Option	Guide price	Good to know
Compact two-storey rear (20–28 m² total)	£52,000 – £72,000	Bigger kitchen below, bedroom or bathroom above
Two-storey side or rear (30–40 m² total)	£68,000 – £98,000	The usual size on a three-bed semi
Large or combined side and rear (45 m²+)	£95,000 – £135,000	More steel, a complex roof and a longer programme

Guide ranges include VAT where it applies. Access, parking and the state of what's there now can move the price — the survey settles it.

Double-storey extensions in Netherton: common questions

How much does a double-storey extension cost?

In the West Midlands, most double-storey extensions cost between £52,000 and £135,000, including VAT where it applies. A typical side extension on a three-bed semi, around 32 m² across both floors, usually costs £68,000–£88,000 built to a plastered finish. Kitchen units, a bathroom suite, flooring and decorating are priced separately, so you can choose them to suit your budget.

Which postcodes in Netherton do you work in?

We cover DY2 and the streets around them. If you're on the edge of Netherton, neighbouring Cradley Heath and Brierley Hill are covered too.

Can we stay in the house while you build?

Most families do. The early stages are outside, and the existing house stays closed off until the shell is weathertight. The harder weeks are when openings are cut through on both floors, which brings dust and noise into bedrooms and the kitchen. We sheet off openings, lock up securely every night and agree in advance which rooms you'll lose and when.

Who approves double-storey extensions in Netherton?

Usually both. Most two-storey extensions need a planning application to Dudley Council, and the structural work needs Building Regulations approval from its building control team or a registered building control approver.

Close to Netherton

More services in Netherton

Call 0800 088 6248 or send us your postcode, and we'll arrange a time to look at the house.