Terraced house rear extension in Washington

How much does a terraced house rear extension cost in Washington?

In Washington, our guide for a terraced house rear extension is £1,840–£2,970 per square metre including VAT for a standard specification. North East prices are among the lowest in our range; former mining ground is the main foundation variable.

Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.

Do you need planning permission for a terraced house rear extension in Washington?

The planning route for a terraced house rear extension in Washington is set by England's householder rules and your council.

English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres within 2 metres of a boundary.

Because rear extensions often sit on or near the boundary, the Party Wall etc. Act 1996 usually applies in England. Notices go out one or two months before work depending on the type of work, and a surveyor's award is only needed if a neighbour does not consent.

Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.

What are homes in Washington like to extend?

Brick terraces, colliery houses and post-war semis make up much of Washington. Former mining areas often need a coal mining risk check before foundations are designed. On a Washington terrace both neighbours usually need party wall notices or agreement, so we talk to them early.

How a terraced house rear extension in Washington comes together

1. Look round and measure

   A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.

2. Options and costs

   We draw layout options and price each one, so the budget shapes the design rather than surprising you later.

3. Planning and regulations

   We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.

4. Build and sign-off

   We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.

Terraced house rear extensions near Washington

From Washington, the nearest places we also cover are Chester-le-Street (3.7 miles) and The Boldons (3.9 miles).

• Terraced house rear extension in Chester-le-Street
• Terraced house rear extension in The Boldons
• Terraced house rear extension in Felling
• Terraced house rear extension in Houghton-le-Spring
• Terraced house rear extension in Hebburn

Other work in Washington:

• Single-storey rear extension
• Two-storey rear extension
• Kitchen-diner rear extension
• Side return extension
• Wraparound extension
• Glazed rear extension

All rear extensions in Washington