Question 1

How much does a loft conversion cost on a Tottenham semi in N15 or N17?

Accepted Answer

A standard rear-dormer loft conversion on a Tottenham semi — structural frame, weathertight dormer in slate or zinc, new staircase, one double bedroom with en-suite, insulation to current Building Regulations, and first-fix plumbing and electrics — typically prices between £54,000 and £86,000. N15 Victorian terraces often have lower ridge heights than the taller N17 inter-war semis; a hip-to-gable conversion may suit the latter at a different cost. Any associated heating upgrades are handled through a Gas Safe registered partner. PrimeCraft produces a line-by-line breakdown with supply and labour separated on the day of the site visit.

Question 2

Which Tottenham streets fall inside a conservation area and face tighter planning controls?

Accepted Answer

Haringey's South Tottenham Conservation Area takes in streets around Bruce Castle and parts of the older N17 core. Inside that boundary, permitted development rights for extensions, roof alterations, and window replacement are curtailed — a full planning application is required for most external changes. Streets in N15 outside that designation mostly retain standard rights, allowing single-storey rear extensions up to six metres on semi-detached houses without a planning application. The boundary does not follow obvious street lines, so the only reliable check is the council's GIS mapping tool. PrimeCraft verifies the designation for your specific address at survey stage.

Question 3

Do the 1930s foundations under N17 semis need reinforcing before a rear extension is added?

Accepted Answer

Inter-war semis throughout N17 were built on shallow concrete strip foundations adequate for the original two-storey load, but any extension proposal requires a structural engineer's assessment before work begins. PrimeCraft co-ordinates the engineer's report as part of the design stage; it confirms whether the existing strips can carry the additional bearing load or whether new pad or strip foundations need forming beneath the extension footprint. Outcomes vary street by street depending on subsoil conditions across Tottenham — in most cases the original footings are serviceable — but the report removes uncertainty before a single shovel goes in.

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