Building design for Bangladesh, from your plot to the last light fitting
Building design for duplex houses, 6 storey apartment buildings, offices and full flat interiors. Tell us your plot size and budget. We connect you with checked architects, engineers and interior teams who work in your city, and we show you the likely cost before you spend a single taka.
বাড়ির নকশা, বিল্ডিং ডিজাইন আর ইন্টেরিয়র, সব এক জায়গায়।
Building design in Bangladesh starts with the plot, the road and the rules
Building design is the full set of drawings that turns a plot of land into a safe building the authorities will approve. It covers the floor plan, front elevation, structure, electrical and plumbing layouts, and the approval drawing set.
In Bangladesh, the size of your building is decided long before anyone draws a facade. The width of the road in front of your plot and its floor area ratio (FAR) set how much you can build. The soil test decides the foundation. The Bangladesh National Building Code (BNBC) 2020 sets how the structure must handle load, wind and earthquakes.
That is why we treat house design in Bangladesh and interior design as one project. When the architect, the structural engineer and the interior team plan together, beams do not cut through your ceiling design, kitchen exhausts have somewhere to go, and you avoid paying twice for the same wall.
Cost figures are 2026 market ranges published by Dhaka firms. They move with rod, cement and labour prices. See our cost guides.
From the first plan to the finished building
Most families in Bangladesh deal with five or six different people to get one home built. Start anywhere below. Each page explains the options, the typical cost and what to ask before you hire.
Building design in Bangladesh
Two to ten storey homes, apartment blocks and buildings with shops on the ground floor, planned around your plot, road width and FAR.
House design in Bangladesh
Family homes for city plots and village land, from compact 2 katha houses to houses with a courtyard and rooftop garden.
Duplex house design
Modern, low cost and village duplex layouts with plans for 1,200 and 1,500 sq ft floors, and semi duplex options.
Building front design
Front elevation, exterior colour, main gate, grill and balcony details that look good and stand up to monsoon rain.
Interior design in Bangladesh
Complete flat and duplex interiors with a clear bill of quantities, so you know the cost of every item before work starts.
Bedroom interior design
Master, kids and small bedrooms with built in wardrobes, bed walls and storage that suit Dhaka flat sizes.
Kitchen design
Kitchen cabinets, modular and open kitchens, tiles and ventilation planned for Bangladeshi cooking with plenty of oil and steam.
Office interior design
Small offices, IT floors, CEO rooms and conference rooms, delivered in phases so your team can keep working.
Thai glass and gypsum ceiling
Thai aluminium windows and doors, glass partitions and gypsum ceilings, with current per sq ft prices in our guides.
Construction and execution
From approved drawings to a finished building. Checked contractors, a project manager and site supervision, with work kept to quality, cost and the design.
3D visualization and walkthrough
Photo real 3D views and walkthrough videos of your building and rooms, so you can approve the look before a single brick is laid.
Interior design company in Bangladesh
Compare interior and architecture firms we have checked, then get up to three written quotes for your project.
From approved drawings to finished rooms
We match you with contractors who build to the drawings, and a project manager and site engineer who keep the work on quality, cost and design.
How every build is run
- Stage payments, never a large advance
- Engineer checks before every slab pour
- Weekly photo updates on WhatsApp
Building construction
Foundation, frame, brickwork and finishing by checked contractors, built to your approved drawings and BNBC 2020.
Interior execution
Carpentry, ceilings, electrical, paint and fit out delivered to the approved 3D design and the written BOQ.
Project management
One schedule, one budget and one person who coordinates the architect, engineer, contractor and suppliers.
Site supervision
Engineer checks at every stage: rebar before each pour, concrete tests, curing and a snag list before you pay.
House, building and interior design inspiration
Duplex homes, apartment buildings, living rooms, kitchens and offices in the styles families and businesses in Bangladesh ask for most. Tap any project type to see plans, costs and firms.
Modern duplex house
2 floors · cantilevered slabs · lit at dusk
5 storey apartment building
Brick facade · private balconies
Bright living room
Herringbone floor · built in TV unit
Kitchen with island
Tall cabinets · chimney hood · breakfast bar
White modern duplex
Deep overhangs for shade and rain
Open plan office
Glass walls · meeting table · exposed ceiling
Master bedroom
Upholstered bed wall · layered lighting
Front elevation
Timber cladding · full height glass
Modern building facade
Framed windows · rooftop terrace
Dining room
Round table · wallpaper feature wall
Restaurant interior
Warm timber · pendant lights · booth seating
House with deep veranda
Wide roof · glass walls · shaded terrace
Modern bathroom
Glass shower screen · vanity storage
Structure to BNBC 2020
Rebar, slabs and site supervision
Glass and staircase
Glass balustrade · floating stair
Office lounge
Breakout seating · glass partitions
Apartment balconies
Stacked balconies · railing design
Family bedroom
Upholstered bench · statement art
How a project moves from plot to keys
The order matters. Skipping the soil test or starting the interior before the structural drawings are final is where most budgets go wrong.
Plot and brief
Share your plot size, road width, number of floors and budget. We check which approval authority applies.
Concept and 3D
The architect gives you layout options and a 3D front view, so you can see the building before paying for detailed drawings.
Structure and services
A structural engineer designs the foundation and frame to BNBC 2020, based on your soil test. Electrical and plumbing layouts follow.
Approval drawings
Signed drawings and land papers go to RAJUK, CDA or your city authority. Construction should not start before approval.
Build and interior
Contractor, Thai glass, gypsum ceiling, kitchen and furniture teams work from the same drawings, stage by stage.
What will your building or interior cost?
A quick first estimate using 2026 market rates. Move the sliders to match your project. Figures are shown in lakh and crore taka.
2026 market rates
Typical cost per sq ft
Rates move with rod, cement and labour prices. Design fees, land development and approval are extra.
Estimated cost
৳2.33 to 3.24 crore
Example project: 5 katha plot, G+5. Your allowed coverage and floors depend on FAR and road width, and design fees, land development and interior are extra. Open the detailed calculator.
The designs people in Bangladesh search for most
Duplex house design alone is searched thousands of times a month in Bangladesh. Browse concept drawings by type, then open a gallery for plans, photos and costs.
Modern duplex
6 storey apartment
Village house
Drawing room
Open kitchen
Small office
Interiors planned for the way Bangladeshi homes are used
A drawing room that receives guests, a family living space, a prayer corner, and a kitchen that handles daily frying. Good interior design in Bangladesh plans for all of it, and chooses materials that survive the humidity from June to October.
Home interiors
Bedroom interior design, drawing and dining rooms, TV walls and storage, planned for flats from 800 to 3,000 sq ft. Home interiors
Kitchen design
Kitchen cabinet design in board, wood or aluminium, with a chimney route and tiles that clean easily. Kitchen ideas
Office interiors
Office interior design for small offices and corporate floors in Gulshan, Banani, Motijheel and Tejgaon. Office interiors
Ceiling and glass
Gypsum ceiling, Thai glass windows and doors, and glass partitions, with current prices per sq ft. Ceiling and glass
How we check an interior design company or architect before we list them
BD House Design is an independent platform. We do not build, and firms cannot pay to skip these checks.
Registration we can verify
IAB membership for architects and IEB membership for structural engineers.
Finished projects we have seen
At least three completed projects, with owners we can call.
Written quotes with a BOQ
Every quote lists materials, brands and quantities, so you can compare firms line by line.
Payment by milestone
No large advance. Payments follow agreed stages such as drawings, approval, structure and finishing.
We stay in the loop
If a job stalls, tell us. Firms that leave clients stranded are removed from the list.
Architects and interior teams in 16 cities
Each city has its own approval authority and building habits. City pages list local rules, common plot sizes and firms working nearby. The code on each card shows who approves building plans there.
Read the guide before you build, renovate or fit out
One practical guide for each part of a project, from plot planning and RAJUK approval to kitchens, ceilings and office fit outs. Each is reviewed by a registered architect.
Duplex House Design Ideas for Bangladesh
Floor plans, styles, climate tips and 2026 costs for two storey family homes.
RAJUK Building Plan Approval Process, Step by Step
Land use clearance, construction permit, documents, drawings and timelines.
Earthquake Resistant Building Design in Bangladesh
BNBC 2020 zones, soil, soft storeys, column ties and site checks.
Best House Exterior Colour Combinations for Bangladesh
Twelve palettes with colour codes, plus a paint system that lasts.
New Flat Interior Checklist: From Handover to Move In
Handover checks, room ideas, 2026 costs and the right order of work.
Office Fit Out Checklist for Bangladesh
Lease checks, space planning, services, budgets and timeline.
Kitchen Cabinet Materials Compared for Bangladesh Kitchens
Ply, board, PVC, wood and aluminium compared, with 2026 prices.
Gypsum vs PVC Ceiling: Which One Should You Choose?
Cost, water and fire resistance, design ideas and a checklist.
Building and interior design, answered
Short answers to the questions we hear most. Each topic has a full guide in the blog.
How much does it cost to build a house in Bangladesh per square foot?
In 2026 most residential buildings cost roughly ৳1,800 to ৳2,500 per sq ft for the structure and basic finishing, and commercial buildings ৳2,500 to ৳3,500 per sq ft. The final figure moves with rod and cement prices, soil condition, foundation type and the finish level you choose.
How much does interior design cost in Bangladesh?
Full interior work, including design, materials and labour, usually runs ৳900 to ৳1,500 per sq ft for a budget finish, ৳1,500 to ৳2,500 for mid range and ৳2,500 to ৳4,000 or more for premium work. A 1,000 to 1,200 sq ft flat at mid range typically lands between ৳10 lakh and ৳18 lakh.
What is included in building design?
A complete building design set covers the floor plans, front elevation and sections, 3D views, structural design, electrical and plumbing layouts, and the drawing set your development authority asks for. Structural design should follow the Bangladesh National Building Code (BNBC) 2020.
Who approves building plans in Bangladesh?
It depends on where the plot is. RAJUK approves plans in Dhaka and its surrounding areas, CDA in Chattogram, KDA in Khulna and RDA in Rajshahi. In other cities the city corporation or pourashava handles approval.
What documents do I need for RAJUK plan approval?
You will usually need the land ownership deed, mutation (namjari) papers and khatian, recent land tax receipts, land use clearance where it applies, a soil test report, and architectural and structural drawings signed by a registered architect and structural engineer.
How many floors can I build on 3 katha land?
It depends on the road width in front of the plot, the plot’s allowed floor area ratio (FAR) and its ground coverage. One katha is 720 sq ft, so 3 katha is 2,160 sq ft of land. An architect should check the FAR for your road before any design work starts.
What is the difference between a duplex and a triplex house?
A duplex house has two floors used by one family and joined by an internal stair. A triplex has three. Both usually suit plots of 3 katha or more in cities, while a duplex is the most common choice for village homes with more open land.
Is BD House Design an architecture firm?
No. BD House Design is an independent platform. We publish design ideas and cost guides, and we connect you with architects, engineers and interior teams we have checked. You sign your contract directly with the firm you choose.
Tell us about your plot or flat
We reply within one working day with the next steps and, if you want them, up to three quotes from firms that work in your area. There is no charge to you.
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