Question 1

Are rear extensions on 1930s semis in Bexley classed as permitted development?

Accepted Answer

For the interwar semi-detached stock that dominates Bexley (DA5–DA7, DA14–DA15), a single-storey rear extension up to 4 m deep typically falls under permitted development without needing full planning. Two-storey extensions and side additions require a planning application. TB&D Construction confirms your specific property's permitted development position on the site visit and handles the lawful development certificate application where required.

Question 2

What's the average cost of a side-return extension in Bexley?

Accepted Answer

Side extensions on interwar semis in Bexley typically cost £35,000–£65,000 depending on width, span and glazing specification. A kitchen-diner opening created by combining the existing kitchen with the side return into a full-width rear room is one of the most valuable additions for this stock type. TB&D Construction provides an itemised breakdown within 48 hours of the site visit.

Question 3

Do you cover all of Bexley, including Sidcup and Erith?

Accepted Answer

Yes — TB&D Construction covers the full borough from Welling and Bexleyheath in the west through Sidcup and Crayford to Erith and the Thames marshes in the east. One named project manager is assigned from quote to completion on every Bexley project, and we carry £1m public liability and £5m employer's liability insurance on every job.

Question 4

How does the Party Wall Act apply to rear extensions on interwar semis in Bexley?

Accepted Answer

The 1930s semis that dominate Bexley — across DA5, DA7, DA14 and DA15 — are built in pairs sharing a single party wall. Any rear extension that builds up to or along that wall triggers a Party Wall Act notice to the adjoining owner, which must be served before work begins. TB&D Construction prepares and serves the notice and, where the neighbour appoints their own surveyor, coordinates with that surveyor to agree the party-wall award before the build commences.

Question 5

What types of renovation projects does TB&D Construction specialise in across the Bexley borough?

Accepted Answer

In Bexley, the core project types are hip-to-gable and dormer loft conversions on 1930s semis, rear kitchen extensions combining a side-return fill with a rear extension to create a full-width kitchen-dining room, and full house renovations that include rewiring, replumbing, new kitchen, bathroom and boiler. Boiler installations are co-ordinated through TB&D's Gas Safe registered partner. TB&D holds a 9.92/10 Checkatrade rating and has passed all 12 of Checkatrade's background and insurance vetting checks.

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Commonquestions, Bexley.

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