Handover-ready is a specific deliverable, not a vague feeling. When the builder hands you keys to a freshly finished apartment, villa, or office in Karachi, what you inherit is settled plaster dust on every horizontal surface, cement haze on the tiles, paint splatter on floors and skirting, fingerprint film on glass, lime efflorescence weeping out of new cement work, and the fine grey grit Sindh wind has pushed into every corner. None of it comes off with a wet mop. At Nest Fumigation Services we run post-construction cleaning in three sequenced stages — rough cleanup, light cleaning, final polish — using HEPA-filtered vacuums, pH-matched chemistry, and a written handover checklist so the unit is genuinely move-in ready, not just presentable from the front door. This page covers what each stage includes, which chemicals belong on which surface, what to verify at sign-off.
What "post-construction cleaning" actually includes
In the Karachi market the phrase gets used loosely. A maid sent in with a bucket and broom is a sweep-out, not a post-construction clean — and it is what most builders quietly bundle into the handover budget.
A real post-construction clean addresses six categories of residue: (1) construction debris — tiles, paint cans, wire offcuts; (2) fine plaster and gypsum dust in vents, on top of door frames, behind cabinetry, inside drawers; (3) cement haze and grout film baked onto tile and natural-stone surfaces; (4) paint over-spray and drips on hardware, switches, sockets, hinges, taps, floors; (5) lime efflorescence — the white crystalline bloom that pushes out of fresh cement work in the first weeks; (6) silicone, adhesive, and tape residue around windows, mirrors, splash-backs, sanitary ware. Each has a different chemistry and surface-compatibility profile. Treating them as one layer is how natural-stone floors get acid-etched and aluminium frames scratched at handover.
The clean is sequenced into three passes because of physics: heavy debris first, wet detail second, final polish last. Skipping a stage to compress the timeline is the most common reason post-construction cleans fail in Karachi.
Stage 1 — rough cleanup (debris, gross dust)
The heavy physical pass. One to three technicians remove everything contractors left behind: paint buckets, tile offcuts, packaging, protective film, masking tape, plaster lumps, plumbing scraps, the inevitable cement bag behind a cupboard. Debris is bagged and removed from site the same day; we do not stack it at the gate because it sits there until the next monsoon turns the cardboard into pulp.
Once debris is out, we deploy HEPA-filtered industrial vacuums to lift gross dust — top of door frames, top of cabinetry, ceiling fans, AC indoor units (exterior), light fittings, window tracks, skirting, and floor-to-ceiling on every wall with brush attachments. HEPA filtration matters here because regular vacuums recirculate fine plaster dust back into the air, which re-settles onto every surface you just cleaned. HEPA captures down to 0.3 microns — the size range gypsum and cement dust occupies. We run sealed-body wet/dry units, not consumer canister vacuums, and change pre-filters between rooms when dust load is high.
Stage 1 deliverables: a unit empty of debris, a photo log of contractor damage (evidence for snag-list corrections if the builder is still on the hook), and a dust load reduced to the point Stage 2 wet work will not turn into mud. A 2,000 sq ft apartment takes three to five hours with two technicians; a 5,000 sq ft villa or commercial floor takes a full working day.
Stage 2 — light cleaning (vacuums, wipe-downs, fixtures, windows)
Stage 2 is the detail pass. The unit is no longer dirty in the heavy sense; it is in the state most "cleaners" treat as already-clean and walk away from. That is the gap our service closes.
Every horizontal and vertical surface gets a damp microfiber wipe-down with the correct cleaner — neutral pH for painted walls and most cabinetry, low-residue glass cleaner on mirrors and windows, alkaline degreaser only on stainless steel kitchen surfaces and ceramic hobs. We work top-down: ceilings and fans, then upper cabinetry, walls, mid-level fittings, lower cabinetry and skirting, floors last. Top-down so loosened dust falls onto surfaces we have not yet cleaned.
Windows are a separate sub-pass. Karachi construction leaves glass with three layers — cement spatter, paint over-spray, dust film. We use plastic blades (not metal) to lift cement spatter, a neutral solvent for paint drops, and a low-residue ammonia-free glass cleaner with microfiber-only application to avoid scratching on tempered glass. High windows on stairwells and commercial elevations get a scaffold-safe protocol — extension poles to 4 metres, scaffold tower or boom lift above that, harnesses above 2 metres. No chair-stack improvisations.
Fixtures get individual attention — switch plates, socket covers, downlight bezels, AC vent grilles, exhaust fan covers, taps, towel rings, flush plates, mirror clips, hinges. A 2,000 sq ft apartment runs another five to seven hours with two technicians.
Stage 3 — final polish (floor restoration, glass detail, sanitization)
The final pass turns a clean unit into a handover-photographable one. Three sub-tasks dominate.
Floor restoration. Marble and granite come out of construction with a haze ordinary mopping never lifts — fine grout film, plaster fines, and paint mist embedded in surface porosity. We address both with a three-stage diamond pad polish: coarse cut, medium hone, high gloss with a crystallisation step. On vitrified and porcelain tile we use a neutral cleaner and a buffer pad — these surfaces do not need polishing but do need the cement film addressed (next section). On cement and terrazzo we apply a sealer if the customer wants long-term staining protection, quoted as an add-on.
Glass and mirror detail. A second pass on every glass surface with a fresh microfiber and the same low-residue cleaner. Streaks become visible only after the first pass dries, which is why this is a separate sub-task.
Paint touch-up and fingerprint removal. We do not repaint, but we address small marks — scuffed skirting, dirty switch surrounds, splashes on door faces, fingerprint film around handles. Magic eraser on satin and semi-gloss paint, damp microfiber on matte, leave-alone on lime wash because mechanical wipes burnish it into a glossy patch.
Sanitization. Final-pass sanitization with a food-safe quaternary ammonium (the active class used in hotel housekeeping) on high-touch surfaces — handles, switches, taps, flush plates, worktops, fridge handles, entry-door frames. Applied at manufacturer contact time and air-dried; no residue, no perfume, no slip risk.
Cement haze on tiles — the acid-with-neutralizing-rinse protocol
The most common post-construction defect in Karachi units is the white-grey haze on tile floors nobody can scrub off with a regular mop. That haze is calcium carbonate film from grout and cement; the only thing that actually dissolves it is a mild acid.
Our protocol on vitrified, porcelain, and glazed ceramic tile: mild diluted hydrochloric acid (typically 5–8% working concentration from a 30% commercial stock), applied with a sponge mop in panels of roughly 10 × 10 ft, worked into the haze for no more than 2–3 minutes of contact time, immediately neutralised with a sodium bicarbonate rinse, then two fresh-water mop passes. The neutralising step is non-negotiable: residual acid left to dry continues to attack cement grout lines, weakening them, and leaves a chalky bloom visible weeks later. Ventilation is also non-negotiable — windows open, exhaust fans running, technicians in nitrile gloves and chemical-rated respirators.
We work in panels rather than flooding the floor because the moment the acid neutralises against the residue it stops working. Grout lines get checked at the end of each panel — if the acid has lightened the grout colour, contact time was too long and we adjust dilution.
What we will not do under any circumstance: apply hydrochloric or any other acid to marble, granite, travertine, limestone, terrazzo, or any natural stone. Acid dissolves calcium carbonate, which is exactly what marble and travertine are made of. The result is irreversible etching, restorable only by mechanical re-honing at the customer's expense. If a cleaner has told a customer "a quick acid wash" will lift marble haze, we refuse the job.
Marble and natural-stone surfaces — what NOT to use
Marble is forgiving in one sense (polishes back to a high gloss when honed correctly) and unforgiving in another (etches the moment acid touches it). The post-construction marble protocol is mechanical, not chemical.
For light cement haze: a neutral-pH stone cleaner with a soft pad, mechanical agitation with a low-speed rotary buffer and soft white pad, clean-water rinse. No vinegar, no lemon juice, no hydrochloric, no descaler. Most household "tile cleaners" in Pakistani hardware stores are acidic — we read every label on site; if the SDS shows hydrochloric, phosphoric, sulfamic, or citric acid, the bottle does not come near marble.
For heavier haze and construction micro-scratches: the three-stage diamond pad polish — coarse cut at 200-grit, medium hone at 400-grit, high gloss at 800–1,500-grit with crystallisation powder. Pads run at 175 rpm with water cooling; high speed and dry running both burn the surface. We send technicians who have done at least 30 marble floors before letting them run a job solo.
Granite is more acid-tolerant in chemistry but reads etching the same way visually, so we treat it as marble for chemical selection. Travertine, limestone, and onyx are even more sensitive — neutral-pH only, soft pads only. For grout: a soft-bristle brush, never wire. Wire brushes leave iron particles that rust into the grout within weeks of monsoon humidity exposure.
Typical timeline and scope for Karachi homes vs offices
The big variable is footprint; the second-biggest is how much finishing work the contractor actually completed versus what they left for the cleaning team to absorb. Realistic envelope:
- 1-bed or studio (600–900 sq ft): two technicians, one day, all three stages in a single visit. From PKR 18,000–25,000.
- 2-bed apartment (1,000–1,400 sq ft): two to three technicians, 1.5 days. From PKR 28,000–40,000.
- 3-bed apartment or small bungalow (1,500–2,500 sq ft): three technicians, two days. From PKR 45,000–70,000.
- Villa or large bungalow (3,000–6,000 sq ft): four technicians, two to three days. From PKR 75,000–1,40,000 depending on marble polish scope.
- Commercial floor or office (3,000–10,000 sq ft): four to six technicians, two to four days, often scheduled across nights and weekends. Quoted on inspection.
Karachi multipliers: heavy marble (add a half-day for polishing); double-height stairwell glass (scaffolding cost); summer builds (more Sindh dust, longer Stage 1); monsoon-closed builds (lime efflorescence, more Stage 2 wet work). For builders and developers we offer per-unit pricing on multi-flat handovers — marginal cost drops on units three through ten because mobilisation is amortised.
DIY post-construction cleaning vs professional service
| Factor | DIY / contract sweep | Professional post-construction clean |
|---|---|---|
| Vacuums | Consumer canister, recirculates fine plaster dust into the air | HEPA commercial wet/dry, sealed-body, pre-filters changed between rooms |
| Cement haze | Repeated mop passes with water and detergent, often gives up after two days | Mild acid in panels with neutralising bicarbonate rinse, lifted in one pass |
| Marble | Frequently damaged by acidic household "tile cleaner" | Neutral-pH cleaner and three-stage diamond polish only |
| Glass | Newspaper and ammonia cleaner, fine scratches on tempered glass | Microfiber-only, low-residue cleaner, plastic blades for cement spatter |
| High windows | Chair-stack or ladder improvisation, fall risk | Scaffold-safe protocol, harnesses above 2 metres |
| Time | Three to five days of redo-redo with diminishing returns | One to three days to documented checklist completion |
| Surface damage risk | High — etched marble, scratched glass, weakened grout | Low — surface chemistry matched per material |
| Sign-off | Visual only, no documentation | Photo log + signed checklist + workmanship warranty |
We have been called in repeatedly to remediate units that started with a household clean and ended with etched marble or grout lines weakened by under-diluted acid. The remediation usually costs more than the original professional clean would have.
Handover checklist — what to verify at sign-off
When we finish we walk the unit with the customer and verify each line item below. Both parties sign and keep a copy.
- All construction debris removed from premises — including the cement bag behind the cupboard and the paint cans on the balcony.
- HEPA vacuum pass completed top-to-bottom — top of door frames, ceiling fans, AC indoor units (exterior), cabinetry tops, light fittings, window tracks, behind sanitary ware.
- All horizontal surfaces wiped — including upper cabinetry interiors, drawer interiors, wardrobe shelving, shoe-cabinet interiors.
- All glass cleaned to streak-free finish — windows interior and accessible exterior, mirrors, partitions, shower screens, glass cabinet fronts.
- All tile haze removed — visually and by water-bead test on selected panels.
- All marble and natural stone restored — polished where contracted, free of haze, no etching.
- All fixtures and fittings individually detailed — switch plates, sockets, downlight bezels, AC vent grilles, exhaust fan covers, taps, towel rings, flush plates, mirror clips, hinges.
- All paint over-spray and drips removed from floors, hardware, switches, sockets, door faces.
- All silicone, adhesive, and tape residue removed from window frames, mirror edges, kitchen splash-backs, sanitary ware.
- All high-touch surfaces sanitised with food-safe quaternary ammonium, contact time observed, air-dried.
- Photo log of contractor damage issued to the customer for snag-list use.
- Written workmanship warranty issued — we return within seven days at no cost if any item is found incomplete on customer re-inspection.
For builder and developer accounts, items 11 and 12 are particularly useful: snag-list evidence is captured at the moment the unit is in its cleanest state, and subsequent damage is provably post-handover.
Our process and what you can expect on the day
When you call or WhatsApp +92-311-1101810, the first step is a site visit. We do not quote sight-unseen on this service — variability between "lightly built and well-protected" and "heavily built and left exposed" is too wide for a phone quote. A surveyor (often Saad Danish directly for jobs above PKR 50,000) walks the unit, photographs each room, notes floor materials, counts windows, and asks one question — when is the move-in date. The quote is delivered same-day or within 24 hours by WhatsApp with written scope, line-item pricing, technician count, day count, start date.
On the day, the team arrives between 09:00 and 09:30 with their own equipment, chemistry, water containers, and rubbish bags. Site requirements: water at one tap, electricity at one socket per floor, unrestricted access. Do not schedule electrician, plumber, or other contractor visits during our days on site — their dust and offcuts undo our work as fast as we complete it. After sign-off the seven-day workmanship warranty starts.
Bundle with sofa cleaning for incoming furniture, or with water tank cleaning before the family starts drinking from the tank — combined-visit rates save roughly 10–15%. For new builds in older neighbourhoods we recommend a preventive pest control visit two weeks after move-in — fresh construction frequently disturbs adjacent termite or cockroach populations.
Book post-construction cleaning with NFS
If you are taking handover on a new build, finishing a renovation, or running a developer account, get the clean booked before keys leave the contractor's hand — the empty-unit window is when this work is fastest and cheapest. Call +92-311-1101810 or WhatsApp with photos of one or two rooms; we respond with a site-visit slot within the same working day.
Nest Fumigation Services Private Limited
Plot #14, 2/1 2nd Gizri Street, DHA Phase 4, Karachi 75500
Phone: +92-311-1101810
Email: contact@nestfumigationservices.com
Hours: Mon-Sat 09:00-21:00, Sun closed
Credentials: ISO 9001:2015, KCCI member, SPMA, PPMA
To book a site visit or request a written quote, use our contact form or browse the full cleaning services menu. More about the team is on Saad Danish's page.
Frequently Asked Questions
When should the post-construction clean actually be scheduled relative to handover?+
In the window after the contractor demobilises and before the customer moves furniture in — usually two to five days. Schedule earlier and we work around contractors still finishing snag-list items, and our work gets undone within hours. Schedule later and furniture has to be moved twice. The ideal call is the day the contractor signs the snag-list off; we typically start within 48 to 72 hours. For developer accounts handing over multiple units we coordinate a rolling schedule with the project manager.
What happens if I skip the post-construction clean and just do a normal deep clean later?+
The fine plaster and cement dust settles into every cabinet, drawer, vent, and seam during the build. Once you move in, that dust gets disturbed by daily life and recirculates into the air for months — a contributor to respiratory irritation in children and asthmatics. Cement haze on tile gets harder to remove as it cures further. Paint over-spray and silicone residue become permanent if not addressed within the first weeks. Relying on a deep clean six months later is the most expensive choice because many residues are no longer reversible.
Can I do some of it myself and have you do the rest?+
Yes, with caveats. Customers can do Stage 1 debris removal themselves — mostly physical labour, no specialist equipment. We then arrive for Stages 2 and 3, which is where the equipment, chemistry, and surface-knowledge value lives. What we advise against is the customer attempting the cement-haze acid step or marble polishing themselves — these are tasks where a mistake is irreversible and remediation costs exceed what you saved on the original clean. We quote the split clearly so you know what is in your scope and what is in ours.
How do I know the cleaners will not damage my marble or other natural stone?+
Three safeguards. First, we ask before the job which surfaces are marble, granite, travertine, or other natural stone, and mark them on a site map. Second, we use a separate, clearly-labelled bottle of neutral-pH stone cleaner that cannot be confused with the acidic tile haze remover — colour-coded labels and locked secondary container. Third, the technicians running the natural-stone protocol are a different (more senior) crew from those running the tile haze protocol on the same day, with a supervisor walking between them. The written workmanship warranty covers etching damage if it ever occurs.
Why does the cement haze on my new tiles refuse to come off with normal cleaning?+
Because it is not dust — it is a thin film of calcium carbonate chemically bonded to the tile glaze during grouting. Water and detergent do not dissolve calcium carbonate; only an acid does. That is why two days of repeated mopping moves the haze around but never removes it. The mild diluted hydrochloric in our protocol breaks the bond in two to three minutes of contact time and lifts the film in a single panel-by-panel pass, followed immediately by a neutralising bicarbonate rinse. Skipping the neutralising step is what damages grout long-term.
My contractor offered to send his team for a "final clean" included in the build cost. Why pay extra for yours?+
Two reasons. First, the contractor's clean is almost always a sweep-out by labourers without HEPA vacuums, surface-specific chemistry, or stone-polishing training — the work that needs to happen does not happen. Second, the contractor's team spent weeks creating the mess; asking them to also undo it creates a conflict of interest where damage they caused gets quietly hidden under the clean rather than documented on a snag-list. An independent cleaner produces evidence (the photo log in our checklist) the customer can use to chase warranty corrections.
How does Karachi's dust situation affect post-construction cleans here versus elsewhere?+
Two factors. First, Sindh wind-blown dust is fine and persistent — particles in the 1 to 10 micron range that embed in fresh paint while tacky and settle on horizontal surfaces during the build. This is why HEPA filtration is not optional and Stage 1 takes longer here than in, say, Lahore. Second, September to November humidity drives lime efflorescence out of fresh cement and plaster — the white crystalline bloom on new boundary walls. Cannot be removed until the cement fully cures (six to nine months), but can be reduced significantly during Stage 2.
Do you handle post-renovation cleans as well as full new-build handovers, and is the process the same?+
Yes. Post-renovation is a smaller subset of the same protocol — same three stages, same chemistry, compressed into the renovated rooms. A typical Karachi post-renovation clean (one bathroom, one kitchen, a repainted drawing room) takes one to two technician-days at PKR 12,000–25,000. The added complexity is dust containment because the rest of the home is occupied — we use temporary polythene barriers, vacuums sealed to negative pressure, and floor covers in adjacent rooms. Handover checklist is the same. Call or WhatsApp +92-311-1101810.