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Kingdom Build
Two-storey house extension built by Kingdom Build with dark aluminium glazing, photographed at dusk

Core Service

Double Storey Extension in West Bromwich

Add a kitchen-diner below and an extra bedroom or bathroom above.

  • 16–24 weeks
  • Fixed-price contract
  • 5.0★ rated

About Double Storey Extension

Add a kitchen-diner below and an extra bedroom or bathroom above.

A double-storey extension is the best £/m² you can spend on a family home. The roof, foundations and scaffolding cost almost the same as a single-storey build, so the second floor effectively comes at marginal cost. For families needing an extra bedroom (or two), a master en-suite, or a home office — this is the option that transforms the house long-term.

Most two-storey work we deliver in West Bromwich and Sutton Coldfield combines an open-plan kitchen-diner downstairs with a new master suite or two additional bedrooms upstairs. We pay close attention to how the new roofline meets the existing — getting that detail wrong is the most common reason an extension looks 'tacked on'.

Two-storey extensions almost always need full planning permission rather than Permitted Development. We handle the design, drawings, neighbour consultation and submission. Typical local authority decision time is 8 weeks. Once approved we usually start on site within 4–6 weeks and complete in 16–24 weeks.

How we deliver

Your double storey extension in 4 steps

01

Free site visit & brief

We meet at your home, listen to what you're trying to achieve and survey the existing structure. Typically within 5 working days of enquiry.

02

Design & fixed-price quote

We produce drawings, a written specification and a single fixed-price contract. No 'estimates' that drift upwards mid-build.

03

Build

One project manager owns delivery from groundworks to finishing. Weekly progress updates, photos and a clean, signed-in site.

04

Snag, sign-off & guarantee

Joint walk-around to clear any snags before we hand over. You leave with certificates, drawings and our 12-month workmanship guarantee.

Our work

Double Storey Extension we've delivered

Two-storey house extension with dark aluminium glazing, photographed at dusk with interior lighting on
Two-storey extension with full-height dark aluminium glazing.

What clients say

Kingdom Build has gone over the top to meet our expectations. We used them for a wrap-around double storey extension. Good job guys!

Keyser Soze
West Midlands · Double storey extension

Double Storey Extension FAQs

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Get a free quote for your double storey extension

Free site visit. Fixed-price quote in 5–7 days. No obligation.

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