Living room with a fitted media wall, electric fire and slatted panelling
Bexleyheath, DA7

Full refurbishment and rear extension in Bexleyheath

We refurbished this three-bedroom house in Bexleyheath and built a rear extension about five metres deep across the full width of the house.
5 m
Depth of the rear extension, which runs the full width of the house
5 weeks
For the council application to be approved
£175k to £180k
Typical cost of a project like this, excluding VAT and fees
6 months
Typical programme for a project of this size
The work
What we did in Bexleyheath

Inside, we stripped out the old wallpaper and carpets and rewired the whole house, placing the sockets, switches and lighting to suit how each room would be laid out and furnished. We moved the boiler out of the bathroom into a utility room in the old kitchen, and replaced the lead water pipe from the meter with a 25 mm plastic supply, which improved the water pressure.

We had the extension drawn up with a structural engineer, and the council application took about five weeks. Once it was approved, we took down the conservatory and moved a drainage inspection chamber to make room. We dug strip foundations about 600 mm wide and a metre deep, then built insulated walls and a roof with two Velux windows. Sliding doors about three metres wide and one more window light the new kitchen and living space.

The cost and programme shown are typical for a project of this size.

Illuminated rear extension at dusk, seen across the lawn
Timings

How long a project like this takes

01
About 2.5 months
We build the extension shell first, from the foundations up to the roof and its Velux windows.
02
About 1 month
Then we finish the inside of the extension and fit the kitchen.
03
About 3 months
The rest of the house takes about three months, partly at the same time as the extension, so the whole job comes to about six months.
FAQ

Questions about projects like this

01.

What does a refurbishment and extension like this cost?

Around £90,000 for the whole-house refurbishment and £85,000 to £90,000 for the extension and its finish, so about £175,000 to £180,000 in all, excluding VAT and professional fees. Every house is different, so we price each one on its size, its condition and the finish you choose.

02.

How long does a refurbishment and extension take?

We allow about six months, with around two and a half months for the extension shell and about another month to fit it out, while the rest of the house takes around three months, partly at the same time.

03.

How long did the council application take?

About five weeks, after we had the extension designed and drawn up with a structural engineer.

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