End of Tenancy Cleaning in Archway

A split-level maisonette in a Victorian terrace on one of the streets climbing Highgate Hill — a 4-minute walk from Archway Northern Line station, 6 minutes from Whittington Hospital. The property occupied the ground and lower-ground floors: a living room and bedroom at ground level (street-facing), and a kitchen, bathroom, and second bedroom at lower-ground level (built into the hillside, with the rear wall a retaining wall against the slope). The tenant — a junior doctor at Whittington Hospital's A&E department — had rented for 18 months at £1,750/month. Managed by David Andrew (Archway office on Junction Road, 35+ years locally).

The gradient was visible as soon as we parked. The front of the house was at street level. The back of the house was half a storey below street level, with the lower-ground rooms looking out onto a small patio area cut into the hillside. The retaining wall at the rear — the original Victorian brick wall holding back the earth of the slope — was the source of the moisture issues the tenant had flagged at booking.

We started at lower-ground level — the damp section.

The bathroom was at the lowest point of the flat. A compact room with a bath-shower combo, a pedestal basin, and a toilet. One small window at patio level. Mould on the ceiling in the corner where the retaining wall met the exterior side wall — two surfaces of damp meeting at a junction. Mould along the bath silicone where it met the retaining wall. A faint damp stain on the retaining wall itself behind where the bathroom cabinet had stood. We photographed all three areas before touching anything — three angles, flash on, timestamps visible. Then anti-mould spray: ceiling junction, silicone, wall surface. 10-minute dwell on each. The ceiling junction cleared well. The silicone improved but a grey shadow remained in a 4-inch section (documented as maintenance — the silicone bead needs replacing, not cleaning). The wall stain behind the cabinet was surface moisture, not mould — it lightened under treatment but a faint tide mark remained (documented as environmental: retaining wall wicking hillside moisture through Victorian brickwork).

After the mould treatment: phosphoric acid descaler on all fixtures at ~270 ppm. Bath taps, shower head, basin taps — 10-minute dwell, one pass clear. Bath waterline (18 months of daily use from a shift-worker who bathed after night shifts — moderate, not extreme). Toilet under the rim. Floor mopped including the junction between the floor and the retaining wall.

The lower-ground kitchen — a galley running along the retaining wall, with a window at patio level. A freestanding cooker (Indesit, 18 months of irregular shift-worker cooking — lighter use than a family kitchen). Door glass out, cavities sprayed, 20-minute dwell. Gas hob cleaned. Extractor soaked. Cupboards wiped. Worktops (laminate) cleaned with non-abrasive cream. The retaining wall behind the worktop had no visible mould but we checked it with a torch — dry, fine. The kitchen floor (vinyl) was mopped, with extra attention where it met the retaining wall at the rear.

The lower-ground bedroom (rear-facing, partially below street level on the uphill side) had a window looking onto the patio. We checked behind the bed position against the retaining wall — no mould, but a slight cold-to-the-touch surface that indicates moisture wicking. Photographed and documented. Carpet vacuumed including edges. Wardrobe wiped inside.

Up the internal staircase (half-flight, carpeted — vacuumed, handrail wiped) to ground level.

The ground-level living room — street-facing bay window, standard Victorian features. Simple cornicing (dusted with extension brush). A sealed fireplace with a painted wooden surround (wiped). Timber floorboards (sealed, mopped with specialist product). Bay window: sash tracks vacuumed, glass cleaned. No damp issues on this level — it was above the hillside contact zone. A completely different microclimate from the rooms 8 feet below.

The ground-level bedroom — front-facing, bright. Sealed floorboards mopped. Built-in wardrobe wiped inside. Radiator vacuumed between fins.

David Andrew inspected two days later. Their Archway team knows the hillside stock intimately — they manage dozens of split-level maisonettes on these streets and they know exactly which walls are retaining walls. Their negotiator checked the lower-ground bathroom first: reviewed our mould photographs, confirmed the ceiling junction was treated, accepted the silicone shadow as maintenance, and accepted the retaining-wall stain as environmental. The kitchen retaining wall: no issues. The lower-ground bedroom: cold wall documented, no charge. The ground-level rooms: standard checkout, everything clean. Passed.

Deposit returned within 8 days. No deductions. The tenant — an A&E doctor working 50-hour weeks — told us she'd have lost money on the mould if she'd tried to handle the checkout herself. She didn't have time to research what constitutes a fair wear and tear deduction versus a legitimate cleaning charge. Our documentation did it for her. That's what a professional clean actually protects — not just the deposit amount, but the time you don't have to spend fighting for it. If you want to understand what your landlord can and can't charge for, our guide on landlord cleaning charges is worth reading before your move-out day.