Barking & Dagenham, London
Boroughs · East London
Barking & Dagenham · Outer London

House extensions in Barking & Dagenham

The most affordable London borough to extend in. Big Becontree plots, straightforward planning and reasonable labour rates.

Typical all-in (inc VAT)
£85k–£135k
Cost vs London base
-5%
Postcodes covered
IG11 · RM8 · RM9 · RM10

Housing stock in Barking & Dagenham

Interwar Becontree estate housing, ex-LA semis with generous rear gardens.

Rear extensionWraparoundLoft

Planning in Barking & Dagenham

Permissive borough — most extensions proceed via PD or prior approval. Watch out for Beam Park and heritage estate constraints in central Barking.

Party Wall Act — what to expect

Semi-detached — one party wall neighbour typical.

Read the Party Wall etc. Act 1996 guide for full detail on notices, timelines and surveyor costs.

Typical costs in Barking & Dagenham

For a mid-spec 25 m² kitchen extension, all-in (professional fees, planning, party wall, VAT and 12% contingency), expect roughly £85,000 to £135,000. High-spec finishes, structural glazing or a full basement dig-out will push above the top of this range; a smaller side-return can come in under the bottom.

Cost tier
Outer London · -5% vs London average

Our calculator applies a 0.95× multiplier automatically for Barking & Dagenham projects. Get an itemised breakdown in 60 seconds.

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Areas we cover in Barking & Dagenham

IG11RM8RM9RM10

Why homeowners in Barking & Dagenham pick us

  • KYB-verified builders only
  • Local Barking & Dagenham project experience
  • Fixed, itemised written quotes
  • Full insurance & warranty checks
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