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OOakfield Building Co.

Extensions · Loft conversions · Renovations

More space, without moving house

We design and build extensions and loft conversions across Derbyshire, from planning drawings to the final coat of paint. One team, one fixed price.

  • FMB member
  • TrustMark registered
  • Fully insured

Get a free quote

We reply within one working day.

5.0★64 Checkatrade reviews
22+years in business
✓FMB member
✓TrustMark registered

Services

What we build

  • 01

    Single & double storey extensions

    Kitchen-diners, garden rooms and bedrooms, built to your plans or ours.

  • 02

    Loft conversions

    Dormer, hip-to-gable and Velux lofts, with stairs, insulation and en-suites.

  • 03

    Renovations

    Knock-throughs, new kitchens and bathrooms, full refurbishments.

  • 04

    Planning & building regs

    We work with local architects and handle the paperwork for you.

  • 05

    Groundwork & drainage

    Foundations, drainage and driveways, done by our own team.

  • 06

    Garages & outbuildings

    Garage conversions, workshops and garden offices.

Recent projects

Recent work across Derbyshire

Duffield · 7 weeks

Rear kitchen extension with roof lantern

A 5m single-storey extension with bifold doors, turning a cramped kitchen into an open-plan family space.

Belper · 6 weeks

Dormer loft conversion

A new double bedroom with en-suite, built with the family living at home throughout.

Mickleover · 2 weeks

Bathroom renovation

Stripped back to brick and rebuilt with a walk-in shower and freestanding bath.

Before & after

From garden to kitchen-diner

Before
After
Single-storey rear extension · Long Eaton

Reviews

What customers say

5.0★★★★★64 reviews on Checkatrade

★★★★★

“Finished on time and on budget, which our friends told us never happens. The team were tidy, polite and great with the kids.”

Tom & Gemma R. · Duffield
★★★★★

“Steve handled the planning, the building regs and the build. We just picked the tiles. Couldn't recommend them more.”

Alan W. · Belper
★★★★★

“Clear written quote, weekly updates and no surprise extras at the end. Our loft is now the best room in the house.”

Nadia S. · Ilkeston
22years in
Derby

About us

Built properly, the first time

Oakfield was started by Steve Hollins in 2004. We take on a handful of projects at a time so Steve is on site every day, and every job gets a fixed written price before we start.

  • FMB member
  • TrustMark registered
  • Fully insured

Areas we cover

Local to Derby

Not sure if we cover you? Give us a ring. If we can't help, we'll point you to someone who can.

  • Derby
  • Belper
  • Ripley
  • Heanor
  • Ilkeston
  • Long Eaton
  • Duffield
  • Mickleover

FAQ

Good questions

Do I need planning permission?

Many extensions and lofts fall under permitted development. We check for you at the first visit and handle the application if one is needed.

How long does an extension take?

A typical single-storey extension takes 6 to 10 weeks on site. We give you a week-by-week plan before we start.

Can we stay at home during the work?

Almost always, yes. We plan the work so you keep a working kitchen and bathroom for as long as possible.

Free, no-obligation quote

Tell us about your project

Tell us a little about the job and we'll get back to you, usually the same day.

Call nowFree quote