An interior design project in Bangladesh runs through 9 stages and takes 45–120 days from site visit to handover. The stages are consultation, site assessment, space planning, 3D visualization, technical drawings with BOQ, procurement, on-site fit-out, quality inspection, and handover. Execution alone takes 4–8+ weeks.
An interior design process is the sequence of design, documentation, procurement, and construction steps that converts an empty or outdated space into a finished interior. Each stage ends with a deliverable (a measured survey, a layout, a render, a BOQ, a snag list) and a client approval. Approvals gate the next stage, so a missed sign-off stops the schedule.
A structured process controls 3 project risks: schedule slips, cost overruns, and workmanship defects. Fixed deliverables and approvals expose each risk before work reaches the next stage. According to DIT Studio, a nine-stage project runs 45–90 days, while Google’s AI Overview for this query gives 1.5–4 months. Project size, design complexity, material lead times, and client approval speed explain the difference.
How Does the Interior Design Process Work in Bangladesh?
The interior design process in Bangladesh moves an apartment, duplex, villa, or office through 9 stages: brief, site assessment, concept, 3D design, drawings with BOQ, procurement, fit-out, inspection, and handover. The designer plans and supervises, the client approves and pays, and the contractor builds.
What Is the Difference Between Residential and Commercial Interior Projects?
Residential projects cover apartments, duplexes, and villas; commercial projects cover offices, showrooms, and retail stores. Apartments in Dhaka areas such as Gulshan, Banani, Dhanmondi, and Bashundhara R/A follow building-management rules for work permits, lift use, and working hours. Commercial projects add requirements for staff capacity, electrical and server loads, signage, and fire exits. The Bangladesh National Building Code (BNBC) sets the structural, fire-safety, and building-services standards behind these requirements.
What Does the Interior Designer Do?
The interior designer delivers 4 outputs: approved design drawings, technical drawings with a BOQ, material specifications, and site supervision.
- Develop the client brief, layouts, and 3D renders into approved design drawings that fix furniture positions, materials, colors, and lighting for every room.
- Prepare technical drawings and a Bill of Quantities (BOQ) that list every material, quantity, and rate, so the contractor prices and builds from one document.
- Specify materials, brands, and finishes with model numbers, and verify physical samples against the approved design before the procurement team places any order.
- Supervise site work through scheduled visits and weekly progress reports, and record every deviation from the drawings with photographs and dates.
What Does the Client Do?
The client performs 4 duties: supplying requirements, approving each stage in writing, arranging building permission, and releasing milestone payments.
- Provide the budget, family size, lifestyle habits, and storage requirements in writing before design starts, so the designer fixes the scope on day one.
- Approve layouts, 3D renders, material samples, and the BOQ in writing at each stage gate, because every approval releases the next stage.
- Obtain building management permission for renovation work, lift use, material delivery, and working hours before the contractor mobilizes on site.
- Release stage payments against completed milestones, then sign the snag list and handover documents after verifying each corrected defect on site.
What Is the Difference Between Design-Only and Turnkey Interior Solutions?
Design-only contracts deliver drawings, 3D renders, and a BOQ, while the client hires separate contractors. Turnkey contracts bundle design, procurement, execution, and handover under one firm, one contract, and one schedule.
| Feature | Design-only | Turnkey |
| Scope | Concept, 3D, drawings, BOQ, optional supervision | Design, procurement, execution, snagging, handover |
| Contracts | Designer plus 1–4 separate contractors | 1 contract with 1 firm |
| Accountability | Split between designer and contractors | Single point of responsibility |
| Client workload | High: the client coordinates trades and deliveries | Low: the firm coordinates trades and deliveries |
What Is the Purpose of Stage 1: Initial Consultation and Project Brief?
Stage 1 records the client’s requirements, budget, scope, and timeline in a written project brief. The interior designer interviews the client and obtains a signed brief. Stage 1 and the site visit together take 1–3 days.
Responsible party: interior designer and client. Duration: 1–2 days. Client approval: signed brief and budget sheet.
- Capture client requirements in a written questionnaire: household size, work-from-home needs, storage volume, guest frequency, and style preferences for each room.
- Map lifestyle and functional requirements to rooms, such as a prayer space, a closed kitchen for heavy cooking, a study desk, and a separate guest bedroom.
- Set the budget as a total figure in BDT and a per-square-foot rate, then split it across civil work, joinery, furniture, lighting, and a 10% contingency.
- Define the project scope: design-only or turnkey service, the rooms included, items the client supplies, and the target completion date.
- Issue the stage deliverables: a signed project brief, a scope statement, and a budget sheet, each approved before the site visit begins.
How Is Stage 2 Carried Out: Site Visit, Measurement and Assessment?
Stage 2 records the physical condition of the space through a site visit, measurements, and a utilities check, and ends with a site survey report. The designer and a draftsperson complete the visit in 1–2 days for an apartment.
Responsible party: interior designer and draftsperson. Duration: 1–2 days. Client approval: building access and permission to open ceilings or walls for inspection.
- Inspect the site room by room: wall condition, dampness, cracks, window orientation, natural light, ventilation, and ceiling height, and photograph every finding.
- Measure walls, beams, columns, door and window openings, and ceiling heights, then plot every dimension on a scaled as-is plan.
- Locate electrical points, the distribution board, plumbing lines, water-tank connections, gas lines, and drainage outlets, because these fix the kitchen, bathroom, and AC positions.
- Confirm existing structural conditions: load-bearing walls, beam positions, and column locations. A structural engineer approves any wall removal or opening before design includes it.
- Collect building management requirements: renovation permit, working hours, lift and material-transfer rules, debris disposal points, security deposit, and contractor entry procedures.
- Compile the site survey report: dimensioned as-is drawings, photographs, utility locations, and a list of constraints that limit layout, ceiling height, and services.
What Does Stage 3 Cover: Concept Development and Space Planning?
Stage 3 converts the brief and the site survey into a 2D furniture layout and a design concept. Space planning fixes zones, circulation, and furniture positions. Stages 3 and 4 together take 1–2 weeks for an apartment.
Responsible party: interior designer. Duration: 4–7 days. Client approval: selected layout option and design direction.
- Divide the plan into functional zones: public (living and dining), private (bedrooms), and service (kitchen, laundry, bathrooms), so each zone has defined adjacency and privacy.
- Place furniture on the 2D layout with exact dimensions: sofa, dining table, beds, wardrobes, and desks, and verify each piece fits its wall and door swing.
- Plan circulation paths at a minimum width of 36 inches (about 90 cm) and keep 36 inches clear behind dining chairs and in front of wardrobes.
- Build the design theme with mood boards: style references, textures, furniture shapes, and lighting mood, assembled into one board per room group.
- Set the material and color direction: wall palette, flooring type, joinery finish, and metal accents, matched to the mood board and the approved budget.
- Submit the 2D layout deliverables: furniture plan, zoning diagram, and 1–2 layout options, each with a short note on trade-offs for client selection.
What Does Stage 4 Deliver: 3D Visualization and Design Approval?
Stage 4 produces 3D renders of each room and ends with a signed design freeze. A 3D render is a photorealistic image of the finished space. The designer completes renders in 5–10 days for a standard apartment.
Responsible party: interior designer and 3D visualizer. Duration: 5–10 days plus 2–3 days per revision round. Client approval: written sign-off on every room and the design freeze.
- Generate 3D renders for the living room, bedrooms, kitchen, and bathrooms that show materials, furniture, lighting, and colors exactly as the contractor will build them.
- Visualize lighting and materials: cove lights, task lighting, wood grain, marble pattern, and fabric color, so the client approves finishes visually before any purchase.
- Develop each room in sequence, starting with the living area, and refine cabinet heights, wardrobe interiors, storage layouts, and wall elevations after each client review.
- Collect client feedback in writing and limit revisions to the 2–3 rounds stated in the contract, with each round adding 2–3 days to the schedule.
- Sign the design freeze, which locks layout, materials, and finishes. Any later change becomes a priced variation order with a stated schedule impact.
What Does Stage 5 Include: Technical Drawings, BOQ and Cost Estimation?
Stage 5 converts the frozen design into working drawings and a Bill of Quantities (BOQ), which lists every material, quantity, and rate. The designer and a draftsperson complete this stage in 4–7 days.
Responsible party: interior designer, draftsperson, and cost estimator. Duration: 4–7 days. Client approval: signed BOQ, quotation, and contract.
- Draw architectural working drawings: plans, sections, and elevations with dimensions, wall finishes, and door and window schedules that the contractor builds from.
- Draw electrical layouts that mark every switch, socket, light point, AC point, and circuit, with the distribution board schedule and load per circuit.
- Draw plumbing layouts for kitchen, bathroom, and utility fixtures, including hot and cold supply lines, drainage points, water-heater locations, and isolation valves.
- Draw false ceiling plans with ceiling levels, cove light channels, AC cutouts, and drop heights marked in inches for each room.
- Detail furniture and joinery: cabinet sections, wardrobe interiors, hardware positions, edge-banding, and finish codes, so the workshop produces each unit without verbal instructions.
- Compile the BOQ with item description, unit (sq ft, running ft, number), quantity, rate, and amount for civil work, MEP, joinery, finishes, and lighting.
- Finalize the quotation and scope approval: the client signs the BOQ, payment schedule, and contract before the designer places any procurement order.
How Does Stage 6 Work: Material Selection, Approvals and Procurement?
Stage 6 confirms every material, places orders, and secures building permissions before fit-out starts. Approvals and procurement planning take 3–7 days, and imported items carry the longest lead times at 3–8 weeks.
Responsible party: interior designer, procurement officer, and client. Duration: 3–7 days for approvals; orders run in parallel with later stages. Client approval: material samples and the procurement schedule.
- Select boards by location: BWP (boiling water proof) marine plywood for kitchens and bathrooms, MDF for dry-area cabinets, particle board for light shelving, and PVC board for wet zones.
- Choose laminates (0.8–1.0 mm) and veneers by grade, brand, and finish, and approve physical sample chips because screens distort color and texture.
- Pick tiles, marble, and stone by size, slip resistance, and water absorption: porcelain and ceramic tiles suit floors and bathrooms, natural stone suits countertops and feature walls.
- Specify hardware and fittings with brand and model numbers: soft-close hinges, drawer channels, handles, locks, and modular kitchen accessories, plus sanitary ware and taps.
- Select lighting fixtures by type, wattage, and color temperature (2700K–4000K): LED downlights, cove strips, pendant lights, and dimmable task lights for each room.
- Choose fabric and upholstery for curtains, sofas, and cushions by color-fastness, durability, and cleaning method, and approve swatches before the workshop cuts fabric.
- Issue the procurement schedule listing each item, supplier, order date, lead time, and delivery date, with imported hardware, tiles, and lighting ordered first because they carry longest lead times.
- Secure building permissions: apartment association approval and the renovation permit from building management. Decorative work does not require RAJUK approval; structural changes and alterations to approved plans do.
- Confirm fire safety requirements under BNBC: exit routes, fire-rated doors, smoke detectors, and extinguisher positions stay intact, and commercial fit-outs add fire-service compliance.
RAJUK (Rajdhani Unnayan Kartripakkha) is the capital development authority that regulates building approvals in Dhaka.
What Does Stage 7 Involve: On-Site Execution and Interior Fit-Out?
Stage 7 builds the interior on site in a fixed order: civil work, MEP, false ceiling, flooring, carpentry, painting, and fixtures. The contractor executes while the designer supervises. Execution takes 4–8+ weeks and is the longest stage.
Responsible party: contractor, site engineer, and interior designer. Duration: 4–8+ weeks. Client approval: milestone payments and approval of on-site mock-ups or finish samples.
- Protect the site first: cover floors and lift lobbies, set dust barriers, tag water and electrical mains, and arrange a locked material store.
- Complete civil and partition work: demolition, brick or gypsum partitions, plastering, wet-area waterproofing, and floor leveling, before any service line closes inside a wall.
- Install MEP (mechanical, electrical, and plumbing) rough-ins: conduits, wiring, water lines, drainage, and AC piping, then pressure-test pipes before the walls and ceiling close.
- Build the false ceiling after electrical conduits are in place: gypsum or PVC frames, cove channels, and light cutouts follow the approved ceiling drawing.
- Lay flooring and apply wall finishes: tiles, marble, or wood flooring, then putty, primer, and paint coats, with the final coat applied after carpentry installation.
- Fabricate custom carpentry in the workshop from the joinery drawings during civil and MEP work, then install wardrobes, TV units, vanities, and doors once floors and walls are ready.
- Install kitchen cabinets, countertops, hob, chimney, and sink, then fit wardrobe interiors and align every door and drawer to even 2–3 mm gaps.
- Mount lighting and fixtures last: downlights, switches, sockets, sanitary ware, mirrors, and curtain rails, so finished surfaces avoid damage from earlier trades.
- Report progress weekly with photographs, percent complete per trade, and a log of deviations and approved variation orders, so the client tracks the schedule against the procurement plan.
What Does Stage 8 Check: Quality Inspection, Testing and Snagging?
Stage 8 verifies workmanship through electrical, plumbing, and finish inspections, and records every defect on a snag list. A snag list is a room-by-room record of defects the contractor fixes before handover. The stage takes 3–5 days.
Responsible party: interior designer or quality inspector, with the contractor rectifying defects. Duration: 3–5 days. Client approval: the closed snag list.
- Test electrical safety: circuit continuity, earth connection, circuit-breaker and residual-current-device trip function, socket polarity, and every light, fan, and AC point.
- Test plumbing and leakage: pressurize supply lines, flood-test bathroom floors for 24 hours, run every tap and drain, and check ceilings below for damp patches.
- Check furniture alignment: door gaps, drawer travel, shelf levels, and panel edges, using a spirit level and a target gap of 2–3 mm between doors.
- Inspect hardware by cycling each hinge, soft-close mechanism, drawer channel, handle, and lock 10 times, and replace any unit that sticks, rattles, or slams.
- Inspect paint and surface finishing in daylight and under a torch for patches, drips, roller marks, hairline cracks, and chipped laminate edges.
- Prepare the snag list: a room-by-room table with defect, photograph, responsible trade, priority, and target fix date for every item.
- Rectify defects trade by trade: the contractor fixes each item, the designer re-inspects it, and both record the closing date on the snag list.
- Complete final deep cleaning: dust removal from joinery interiors, paint and adhesive residue removal, glass and fixture polishing, and debris disposal from the site.
What Does Stage 9 Hand Over: Final Handover and Documentation?
Stage 9 transfers the finished interior to the client through a walkthrough, documents, and keys. The handover takes 1 day and starts the defects liability period.
Responsible party: interior designer, contractor, and client. Duration: 1 day. Client approval: signed project sign-off.
- Conduct the final walkthrough with the client, designer, and contractor, and compare each room against the approved drawings and the closed snag list.
- Deliver as-built drawings: the final electrical, plumbing, and ceiling layouts as constructed, which show concealed pipes and cables for future repairs and appliance additions.
- Provide material and equipment manuals for the AC, chimney, hob, water heater, and lighting controls, with model numbers, serial numbers, and service contacts.
- Issue warranty certificates for joinery, waterproofing, electrical work, and appliances, each stating the start date, end date, covered defects, and exclusions.
- Supply maintenance instructions: cleaning methods for laminate, stone, glass, and fabric, plus humidity care such as ventilating wardrobes during monsoon months.
- Sign the project sign-off and transfer the keys after the client accepts the work and releases the final payment installment.
- Start the defects liability period, the contract-defined window in which the contractor repairs workmanship defects free of charge, and record its start date and duration in writing.
How Long Does an Interior Design Project Take in Bangladesh?
An interior design project in Bangladesh takes 45–120 days: 45–90 days for a standard apartment and up to 120 days for larger projects or projects with imported materials. Google’s AI Overview gives 1.5–4 months, and DIT Studio gives 45–90 days.
| Project stage | Estimated duration | Key deliverable |
| Site visit and brief (Stages 1–2) | 1–3 days | Site measurements and project brief |
| Concept and design (Stages 3–4) | 1–2 weeks | Layouts and 3D visualization |
| Working drawings and BOQ (Stage 5) | 4–7 days | Technical drawings and cost sheet |
| Approvals and procurement planning (Stage 6) | 3–7 days | Approved material schedule |
| On-site execution (Stage 7) | 4–8+ weeks | Completed interior |
| Snagging and cleaning (Stage 8) | 3–5 days | Inspection and snag list |
| Final handover (Stage 9) | 1 day | Keys and documentation |
Adding the minimum durations gives 47 days. Adding the maximum durations with an 8-week execution gives 93 days. Overlapping activities explain why real schedules land inside the 45–90 day range for apartments.
How Long Does a Residential Apartment Project Take?
A residential apartment project takes 45–90 days from site visit to handover. Design and documentation take 3–4 weeks, fit-out takes 4–8 weeks, and snagging with handover takes 4–6 days. Light renovations with fewer custom items finish at the short end of the range.
How Long Does a Duplex or Villa Project Take?
A duplex or villa project takes 90–150 days. The larger floor area, more custom joinery, stone work, and multi-floor MEP runs extend design, procurement, and execution. These figures are editorial estimates built from the competitor ranges above; confirm them against the contractor’s written schedule.
How Long Does an Office or Commercial Project Take?
An office or commercial project takes 60–120 days. Commercial schedules add workstation layouts, server and electrical load planning, partitions, ceiling services, signage, and fire-exit compliance. These figures are editorial estimates; confirm them against the contractor’s written schedule.
Which Activities Run Simultaneously in an Interior Project?
4 activities run in parallel and shorten the total schedule: material ordering, furniture production, procurement planning, and permission processing.
- Order finishing materials after preliminary design approval, so tiles, laminates, and hardware reach the site before fit-out begins and trades never wait for deliveries.
- Start custom furniture production at design freeze, so the workshop builds wardrobes, kitchen units, and TV cabinets while civil and MEP work proceeds on site.
- Prepare procurement planning while technical drawings and the BOQ are in production, because material lists come directly from the joinery and finish schedules.
- Secure building permissions during design stages, so the renovation permit and contractor entry approval are ready on the first day of fit-out.
What Causes Interior Design Project Delays in Bangladesh?
7 factors cause most interior project delays in Bangladesh: late design approvals, material availability, imported material delays, building management restrictions, unexpected site conditions, scope changes, and labor and contractor coordination.
- Late design approvals delay drawings, the BOQ, and orders by the same number of days the client takes to respond; a 7-day pause moves handover by 7 days.
- Material availability gaps, such as out-of-stock BWP plywood, laminate shades, or tile batches, force substitutions that require a written client approval and a revised BOQ line.
- Imported material delays from customs clearance, Chattogram port congestion, and shipping add 3–8 weeks to hardware, porcelain tile, and designer lighting orders.
- Building management restrictions limit working hours, ban noisy work on set days, restrict lift use for materials, and require permits, which reduce productive site hours per week.
- Unexpected site conditions, such as concealed dampness, uneven slabs, damaged pipes, and measurement errors found after demolition, add repair tasks before finishing work starts.
- Scope changes after design freeze trigger redrawing, repricing, and reordering, and move every dependent task, including carpentry production, painting, and snagging.
- Labor and contractor coordination gaps stall sequential trades: electricians, tile setters, carpenters, and painters work in order, and Eid holidays reduce workforce availability for 1–2 weeks.
How to Avoid Delays and Cost Overruns in an Interior Project?
6 actions prevent most delays and cost overruns: finalize requirements early, approve designs before execution, prepare a detailed BOQ, confirm material availability, set a communication schedule, and inspect the site regularly.
- Finalize requirements in the Stage 1 brief: room list, storage needs, appliances, and budget, because a complete brief removes redesign loops after 3D approval.
- Approve designs in writing before execution: sign the design freeze and price every later change as a variation order, a written, priced change to the approved scope.
- Prepare a line-item BOQ with quantities, units, and rates, and add a 10% contingency line, so unplanned work draws from an approved budget source.
- Confirm material availability with suppliers before the design freeze, and record stock status, lead time, and price validity for each key item in the procurement schedule.
- Establish a project communication schedule: 1 weekly site meeting, 1 written progress report with photographs, and a 24-hour response time for every client approval request.
- Conduct site inspections at each trade completion, before walls and ceilings close, so the designer verifies conduits, pipes, and waterproofing against the approved drawings.
What Should You Check Before Final Handover?
8 checks decide handover acceptance: electrical systems, plumbing systems, furniture and cabinet alignment, door and drawer hardware, paint and surface quality, lighting and fixtures, warranty documents, and maintenance instructions.
- Test every switch, socket, light, AC point, and circuit breaker, and confirm the distribution board labels match each circuit in the as-built drawing.
- Run every tap, shower, flush, and drain for 5 minutes, and check for leaks, slow drainage, low pressure, and damp patches on adjacent walls.
- Close every cabinet, wardrobe, and door, and verify even gaps, level shelves, flush panels, and doors that stay shut without bouncing back.
- Operate every hinge, drawer channel, handle, and lock 5 times, and confirm smooth travel, soft-close action, and no rattling or scraping sounds.
- Inspect paint and surface quality in daylight, looking for patches, drips, uneven sheen, cracks, and chipped laminate or veneer edges.
- Switch on all lighting after sunset and verify color temperature consistency, dimmer operation, and fixture alignment, and ensure no flicker or buzzing at any light point.
- Collect warranty documents with start dates, end dates, covered items, exclusions, and contractor contact details, and store copies with the as-built drawings.
- Receive written maintenance instructions covering cleaning products, humidity control, appliance servicing intervals, and the contact route for defect claims during the liability period.
How Long Does Interior Design Take in Bangladesh?
An interior design project in Bangladesh takes 45–120 days from site visit to handover. A standard apartment completes in 45–90 days, according to DIT Studio. Duplexes, villas, and projects with imported materials run longer. On-site execution accounts for 4–8+ weeks of the total.
How Long Does a 1,200 sq ft Flat Interior Take?
A 1,200 sq ft flat takes 60–90 days for a full interior: 2–3 weeks for design and drawings, 4–6 weeks for fit-out, and 3–5 days for snagging and handover. A light renovation with fewer custom items finishes in 45–60 days. These are editorial estimates.
Can Interior Design Start Before Apartment Handover?
Design work starts before apartment handover; on-site work does not. The designer plans from the developer’s floor plan, selects materials, and prepares the BOQ. Fit-out begins after the developer hands over the keys and the building management issues the renovation permit.
How Long Does 3D Design Take?
3D design takes 5–10 days for a standard apartment after the client approves the 2D layout. Each revision round adds 2–3 days. The designer renders the living room, bedrooms, kitchen, and bathrooms, then collects written feedback before the design freeze.
What Is Included in a BOQ?
A Bill of Quantities (BOQ) lists every work item with description, unit, quantity, rate, and amount. It covers civil work, electrical, plumbing, false ceiling, joinery, flooring, paint, lighting, and hardware. The client signs the BOQ as the cost baseline before procurement begins.
When Should Furniture Production Begin?
Furniture production begins after the design freeze and the signed BOQ, and runs parallel to civil and MEP work. Workshop-made wardrobes, kitchen units, and TV cabinets take 3–5 weeks, so delivery matches the end of flooring and ceiling work.
Can I Change the Design After Approval?
Design changes after the design freeze proceed as variation orders. The designer reprices the change, updates the drawings and BOQ, and states the schedule impact. The client signs the variation order before work starts. Changes after material ordering also add restocking or wastage costs.
What Is Included in Final Handover?
Final handover includes a client walkthrough, a closed snag list, as-built drawings, equipment manuals, warranty certificates, maintenance instructions, keys, and a signed project sign-off. The handover takes 1 day, and the defects liability period starts at this point.
How Long Does an Interior Design Warranty Last?
The contract sets the warranty length, so confirm it in writing before signing. Workmanship warranties for joinery, waterproofing, and electrical work appear separately from appliance warranties, which follow the manufacturer’s terms. The defects liability period covers free repair of workmanship defects after handover.
