Fourplex Plans: 4 Unit Apartment Building Plans

Fourplex construction blueprints, also known as construction building plans, are two-dimensional drawings that have all the details and specs needed for a 4-unit multi-family project. These drawings provide information for the general contractor, sub-contractors, and suppliers to bid and build the fourplex project. 

These details are also crucial for requesting permits, performing takeoffs and cost estimations,  and eventually carrying out the construction itself. Depending on the project specifications, general contractors and seasoned estimators report that they spend up to 60% of their time only doing takeoffs and cost estimations.

Fortunately, the use of AI estimating software in streamlining the takeoff process has led to dramatic results for construction firms. Major global construction leaders report that technology has allowed them to become more efficient and to focus on value-generating activities like pricing, scoping, and value engineering. In addition, it improved the accuracy of their takeoffs and increased the productivity of their estimators.

If you’re a project owner, general contractor, or a seasoned estimator looking for building plans for a fourplex construction project, then this guide is for you. We have reviewed eight 4 unit apartment building floor plans, so you can leverage them for your next multi-family building project. 

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1. 4 Unit Apartment Building Plans By Drummond House Plans

Blueprint Provider Description:

Drummond House Plans is a website that provides simple ready-to-build house plans. They provide blueprints for a variety of projects including bungalows, cottages, vacation homes, modern houses, farmhouses, cabins, and more. According to the site, they’ve sold around 130,000 house plans since 1973, making them a reputable source for 2 unit apartment building plans, small 4 unit apartment building plans, and more. 

When you visit the site, you’ll see their multi-family house plans, with 4 or more rental units,  with 2 or 3 bedrooms per unit. The plan includes modern apartments with full amenities and varying designs, including a Nordic look with wood beam accents or a contemporary style. Within the site, there’s also an option to filter their blueprints by plan type, number of bedrooms, number of bathrooms, architectural styles, number of floors, and other special elements. 

Here are some of their Fourplex Building Plans: 

• Blueprint: Seattle 

This is a 4-unit multi-family mountain-style house plan. It consists of a modern rustic theme with a combination of stone and siding. Its floor layout is designed to maximize each floor and offer lower construction costs. 

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Here are more details on this blueprint: 

• Blueprint: Williston Quarters 

This fourplex house plan consists of a raised basement that allows cost-effective development of lower and upper units, and rear-oriented living areas that enhance the privacy of the residents. 

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Here are more details on this blueprint: 

• Blueprint: Croft Woods 1 

This is an apartment building plan 4 units, 2 bedrooms, and a laundry room in each apartment. 

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Here are more details on this blueprint: 

 2. Building Designs By Stockton

Blueprint Provider Description:

Building Designs by Stockton is a website that provides building designs for multi-family and commercial buildings. They also provide various house plans, garage plans, and storage plans. According to the site, they’ve been providing quality floor plans for over 25 years, making them a reputable source for fourplex apartment blueprints. 

When you visit the site, you’ll see over a hundred multi-family plans for 3-4 plex buildings. The apartment plans feature varying designs such as contemporary craftsman, bungalow, victorian, traditional, colonial, Spanish/Mediterranean, and brownstone designs. The floor plans provided vary in depth and width with the narrowest units being 12'-8" wide.

Here’s an example of their Fourplex Building Plans: 

• Blueprint: 4-21052-4

This is a two-story apartment with 4 units, a great room layout, a balcony, and a garage. 

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Here are more details on this blueprint: 

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3. 4 Unit Apartment Building Plans by Family Home Plans

Blueprint Provider Description: 

Family Home Plans is a website that provides home designs in every style, type, and price range. They provide blueprints for a variety of projects including single-family homes, homes with a high resale value, garages, farmhouses, modern houses, country houses, and more. According to the site, they’ve gone through a century of doing business and working closely with homeowners, builders, home designers, and architects, making them a reputable source for quality fourplex plans. 

When you visit the site, you’ll see their 4 unit multi-plex plans with varying designs, amenities, and aesthetics. With every available floor plan comes the specs such as size, number of beds, number of baths, and more. Like Drummond House Plans, there’s also an option to filter the blueprints by size, number of bedrooms, number of bathrooms, and more. 

Here’s an example of their Fourplex Building Plans: 

• Blueprint: 45352

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This multiplex has a total living area of 4,872 sq. ft. with 8 beds and 12 baths.  

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Here are more details on this blueprint:

4. Fourplex Plans by PlanSource, Inc 

Blueprint Provider Description:

PlanSource, Inc is a website that provides quality blueprints fit for any need and budget. They offer a wide selection of drawings for single-family homes, duplexes, triplex, fourplex, and other multi-family apartments. They also provide modifications to the drawings at no extra charge. They also aim to keep construction costs down by designing plans that are light on material and with comfortable living spaces. 

According to the site, instead of being a reseller of floor plans, PlanSource, Inc is an independent company with exclusive designs. They prepare all blueprints in-house rather than providing 3rd party plans across different websites. 

When you visit PlanSource, Inc, you’ll see their 4-unit apartment plans, with a picture of the exterior view, plan number, and description of the units. When viewing the floor plan, they provide other specs such as the size of the living area and the number of bedroom units. 

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Here’s an example of their Fourplex Building Plans: 

• Blueprint: J2878-4-21-2

This apartment is one of PlanSource, Inc’s most popular 1-story fourplex plans. It’s a 3-bedroom unit with a living area of 4,150 sq. ft. 

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Here are more details on this blueprint: 

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5. Custom Fourplex Building Plans by Houseplans.pro

Blueprint Provider Description:

Houseplans.pro provides plans that come straight from the designers who created them, which enables the site to quickly customize the drawings depending on your needs. They provide blueprints with varying architectural styles and types. The plans they provide also fit various projects such as single-family homes, duplexes, triplex, fourplex, townhouses, and condo plans which can all be customized based on your exact specifications. According to the site, they have been providing innovative home designs since 1962. 

Inside, you’ll see multiple custom fourplex house plans with varying designs, with some resembling row houses, while others built as single structures with divided living units. As you scroll through the various options for fourplex designs, the preview for each floor plan provides information on the plan’s square footage, number of bedrooms, baths, and garage stalls, as well as the width and depth of the structure. Some of the designs include Florida vernacular architectural style, modern, narrow, luxury, and more. 

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Here’s an example of their Fourplex Building Plans: 

• Blueprint: One Level 4-Unit Multiplex F-596

This apartment is a 1-story fourplex with a 768 total sq. ft. 

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Here are more details on this blueprint: 

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6. 4-Unit Building Plan by the Plan Collection

Blueprint Provider Description:

The Plan Collection is a website providing over 22,000 plans. They’ve been online since 2002, and have been providing quality plans for various types, styles, and project sizes. Examples of styles they provide plans for are Acadian, A-Frame, beachfront, contemporary, concrete, country, luxury, Southern, and many more. The structure’s square footage can be anywhere below 1000 square feet, or above 5000 square feet, and can be single-family homes, duplexes, and multi-family homes. 

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Here’s an example of their Fourplex Building Plans: 

• Blueprint:  # 142-1022

This specific 4-unit building floor map is 2176 sq. ft. with 2 floors and 2 units on each floor. The architectural style is a mix of multi-unit, colonial, and traditional. The exterior wall is wood siding, while the roofing type is hip made with asphalt shingles. Each unit consists of 1 bedroom.

Here are more details on this blueprint: 

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7. Fourplex Plans by E-Designs Plans 

Blueprint Provider Description:

E-Designs Plans is a company with over 30 years of involvement in every aspect of the home building industry. This includes 15 years of designing homes for clients all over Canada and the US. They provide building plans for a variety of projects such as ranch-style homes, farmhouses, cottages, cabins, and more. They also provide multi-family plans such as duplex, tri-plex, 4-plex, 6-8 plex, and plans with basement suites. 

When you visit the site, you’ll see 4-plex blueprints and other multi-family house plans. As you scroll through the various options for fourplex designs, the preview for each plan provides basic information such as the square footage, number of bedrooms, number of bathrooms, width, and depth of the structure. Upon viewing, you’ll be provided with a more detailed description of the plan, including floor plans, a picture of the exterior, and details on the amenities inside.

Here’s an example of their Fourplex Building Plans: 

• Blueprint: 2019253

Here are more details on this blueprint: 

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8. European Fourplex by Architectural Designs

Blueprint Provider Description: 

Architectural Designs is a family-owned business with over 40+ years of history in helping builders and homeowners find plans fit for their needs and budgets. They provide blueprints for a variety of styles including country, modern farmhouse, new American, traditional farmhouse, craftsman, barndominium, traditional, and Southern. To navigate their website, they’ve provided an option to filter the plans by square footage, number of beds, number of bathrooms, and number of floors. 

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Here’s an example of their Fourplex Building Plans: 

• Blueprint: Plan 60623ND European Fourplex

This specific European fourplex is 7,016 heated square feet, with a width of 85' 0" and a depth of 51' 2". Because of the dining floor room bump-out, units 1 and 4 are slightly larger, being 840 square feet on the main floor and 762 square feet on the second floor. 

Final Words 

Fourplex buildings and other multi-family housing allow more than one family to inhabit a single piece of land, making it more cost-effective for homeowners and project owners. Because of the consistent design throughout the units, it’s also easier and faster to estimate and build. 

For fourplex construction projects, gaining access to quality blueprint designs is crucial for requesting permits, performing takeoffs, and the construction itself. When choosing the site to purchase or access fourplex building plans, it’s essential to consider the following:

• The business’ expertise
• If the plans could be modified to fit your needs
• The various building styles available

You'll need around $419,000 to build a fourplex. But the final costs will be impacted by various factors, including materials used, inflation, site location, square footage, style, and more, and may range from $190,000 to $648,000. 

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