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Duplex house blueprint



1800 sqft simple modern house design

1800 sqft simple modern house design

30 60 North
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Duplex banglow house design

Duplex banglow house design

60 100 East
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Modern house plan with elevation

Modern house plan with elevation

32 65 North
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10 Ways to Design a Duplex House

Duplex houses are modern-day small houses for big families or joint families. These duplex houses are ideal for families with 3 couples and kids. You will have separate living room areas, and common spaces yet live under one roof. Let's discuss more about the benefits of duplex houses and how you can design duplex houses.

Duplex House

A duplex house is a type of residential building that contains two separate housing units. Here are some key features of a duplex home:

  • It is like two distinct units stacked one above the other.
  • The two units are typically identical in size and layout and have the same floor area.
  • Both units have their own entrances, kitchens, bedrooms, and living spaces. The units may also have separate utilities.
  • There is usually a common wall between the units that separate the two residences. This is often a firewall to prevent noise and fire from passing between units.
  • On the exterior, a side-by-side duplex resembles a large single-family house while a stacked duplex looks like a 2-story home.

Tips to Design a Duplex House

Designing small home blueprints is not a tough job. With careful planning and including unconventional elements you can create a great looking design. Here are some tips for designing a duplex house.

Tip 1: Preparing a Design Blueprint

The first and foremost tip is to prepare a design of the duplex. Firstly, review the building permit requirements when starting the design process. Ensure the duplex blueprint complies with regulations for parking, height, setbacks, and other criteria. Speak to the architect about your design requirements and prepare a plan accordingly. An architect knows the exact requirements for a building permit from the local authority and he/she will prepare the duplex blueprints accordingly.

Tip 2:Optimize the Floor Plan Layout

The second tip is to optimize the floor plan so that you utilize maximum space yet it does not feel congested. Ideal and well-planned duplex blueprints maximize living space while minimizing shared walls. Position amenities back-to-back between units for soundproofing. Locate common spaces like laundry rooms wisely to reduce noise. Ensure each unit has equal access to entries, parking, yards, etc.

Tip 3: Include Separate Amenities

The next tip is to include separate amenities for each unit. Duplex units should contain duplicate self-contained living spaces. Give each residence its own full kitchen, bedroom(s), living room, and bathroom. This allows more privacy and flexibility for owners and renters. Only optional amenities like storage or laundry rooms need to be communal. The idea of a duplex house means separate living under one roof. Keep some common spaces like entertainment zones, and outdoor spaces where the whole family can sit and enjoy together. These spaces are multipurpose in nature and ideal for holding events or parties.

Tip 4: Allow for Soundproofing

It is very important to have privacy between two units. One of the major challenges in duplex houses is to have privacy. Use double stud walls, resilient channels, and insulation between the units to reduce noise transfer. Stagger wall studs for more sound dampening. Limit windows on shared walls or use specialized acoustic windows. Place loud rooms further apart and use flooring designed to absorb footsteps.

Tip 5: Accommodate Multiple Entrances

Though duplexes do not have multiple entrances but they can be created. Keep front and rear entryways for both units in the duplex house blueprint. Side entries off driveways also work well. Multiple access points improve privacy, convenience, and flexibility. Stagger the doors rather than having entrances right next to each other. Include exterior lighting at all doors.

Tip 6: Allocate Storage Wisely

It is always ideal and fun to use the smart storage systems in the duplexes. These smart storages save space and utilize vertical spaces or unwanted/left-out corner spaces. Incorporate storage spaces like closets, pantries, attics, and basements efficiently into the duplex blueprint. Built-in shelves and cabinets also help. Adequate storage in each unit maximizes the usable living area. Shared storage can be designed for items like lawn equipment.

Tip 7:Choose Durable Materials

Choosing the right materials is very important for any house. Select quality finishes that will withstand wear and tear from tenants long-term. Hardwood floors, stone surfaces, metal roofing, and vinyl siding hold up better than carpets, drywall, and wood siding. Prioritize durability and low maintenance over luxury for rentable units.

Tip 8:Design an Efficient Roof

The next tip to design a great duplex is to have an efficient roof. Opt for a shared roof structure that spans both units. This saves costs compared to constructing two separate roofs. Design the pitch and drainage carefully to avoid leaks and issues. Use quality, long-lasting roof materials that won't need frequent replacement or repairs.

Tip 9:Include Outdoor Spaces

Outdoor spaces are the demand in every house design these days. They are ideal spaces for relaxation, kid’s play areas, parties, and many more. Incorporate porches, patios, balconies, and green spaces for both units in the duplex blueprint. Having direct outdoor access greatly improves the livability and appeal of each residence. Front porches promote community. Rear patios offer privacy. Green spaces provide recreation opportunities.

Tip 10: Allow for future flexibility

The last tip is to think of the future and build your duplex house blueprint keeping the future in mind. After a few years, your family might grow bigger and you might need more space. So the design can be modified so as to create that extra space. Design the structure so the units could be combined or separated later by altering the shared walls if needed. Building in flexibility for possible future uses as a single-family home, triplex, or apartment adds long-term value. Ensure the roofline, siding, and utilities can accommodate additions or expansions if required.


With these 10 tips, homeowners can create an efficient, livable, and affordable duplex home. The home will be perfect for multigenerational living and rental purposes. If you have a small family you can rent out a room or two on PG.

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