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Modular Buildings Manufacturers and Suppliers

IQS Directory implements a thorough list of modular building manufacturers and suppliers. Utilize our listing to examine and sort top modular building manufacturers with previews of ads and detailed descriptions of each product. Any modular building company can design, engineer, and manufacture modular buildings to meet your companies specific qualifications. An easy connection to reach modular building companies through our fast request for quote form is provided on our website. The company information includes website links, company profile, locations, phone, product videos and product information. Customer reviews are available and product specific news articles. This source is right for you whether it's for a manufacturer of modular building systems, prefabricated structures, and conventional buildings.

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As a manufacturer of modular buildings, including inplant modular offices, exterior steel buildings, guard buildings, fork liftable and crane liftable buildings, multi-level buildings and mezzanines, Abtech offers turnkey installations or packages for install by end user. Our modular structures are constructed of steel, are free-standing & manufactured under strict quality control methods.
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We offer a wide variety of affordable modular buildings for your convenience. Our engineers are determined to bring you a product with a great value and exceptional customer service. We have been around since 1954 providing portable buildings that are made out of steel. We are able to provide them to be bullet resistant as well as any size you need. Get in touch with our customer service representatives today to learn more!
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If you are in need of a modular building then you have come to the right place. Customer satisfaction is paramount to our company and we take extra steps to make your experience with us a positive one. We are recognized as a business leader and our success is based off your success. Our experts are eager to assist you today. It is our hope to forge a professional relationship with your business. Please give us a call today to learn more information!
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FCP's custom prefabricated metal buildings are easy to install and offer functionality while saving time and money. We design pre-engineered metal buildings that work for you: Multi-Story Buildings, Garages, Canopies, Pump & Equipment Buildings, Trash Enclosures & Gates, Horse Barns & Ag Buildings.
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Vanguard provides high quality, cost-efficient modular buildings for classrooms and offices to ensure a comfortable and safe work environment. Since our founding in 1998, we have served and continue to serve a variety of industries nationwide. Call or visit our website to learn more!
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Industry Information

Modular Buildings

Modular buildings are prefabricated structures - in the form of complete stand alone buildings, space partitions, building extensions or small booths and guard houses - that provide a cost-effective and time saving alternative to conventional building methods of using bricks and lumber.

Used as long-term temporary or permanent facilities, modular or prefabricated buildings are used for a number of applications such as churches, schools and universities, offices, gyms and hospitals. They are also used for temporary offices at construction sites, for disaster relief housing and for military barracks. Modular building systems are far less costly than conventional building methods, and complete fabrications are able to be finished from design to assembly in a matter of weeks. Storage buildings, prefab shelters, security guard houses and modular offices are common uses for modular or prefabricated building. Far less costly in terms of materials, labor and time than conventional construction methods, modular buildings are available in stock sizes and layouts, or with custom design and specifications. Relocatable buildings and portable buildings are extremely versatile and are useful for installation in many different fields, even in remote and rural locations. Larger buildings such as prefabricated garages might be constructed from a durable metal such as steel or aluminum. Pre-engineered buildings are able to be used in a number of different applications because of the versatility of their shape, size and capabilities.

The term prefabricated may refer to the components, modules or transportable sections of the structure or building. Typically, the elements of the building are constructed in a factory and then transported either partially or completely assembled to the intended site of installation. A prefabricated or modular building is able to include all the necessary components such as walls, floor trusses, a variety of windows, complete HVAC systems, plumbing, electrical wiring and lighting and interior finishes. Using the method of modular building offers many benefits when compared to traditional site-constructed facilities. In situations where fast construction and low cost are important, modular structures offer a long-lasting solution. Structures are able to be designed to make existing buildings, or painted to stand out through the use of colors and trims. For classrooms, clean rooms, large gyms, churches and commercial facilities, modular building offers an ideal solution to many factors that normally slow the process of building.

Modular building manufacturers provide flexibility and other advantages over site-construction, such as cost savings, speed of occupancy, factory-controlled quality and ease of expansion and relocation. The most significant advantage of modular buildings is the time saved although actual production times will vary according to the complexity of the design, the skill of the engineers and delivery times. However, many modular buildings are fabricated from stock designs and therefore do not need to go through the process of design. Then during the construction process, the buildings only need to be assembled together instead of actually being constructed onsite. Therefore, modular buildings are less susceptible to delays due to lack of building materials and labor or due to effects of weather which can stall traditional building schedules. Prefab buildings are typically built according to a carefully monitored timetable within the factory plant, and some manufacturers even guarantee a certain number of weeks until a building is available for installation. Modular building fabrication uses factory methods to greatly enhance quality and reduce manufacturing time and cost.

There are a number of important factors to consider before undertaking a building job of any sort, and especially before undertaking a modular building job. National and local electrical and construction standards must be explored before a prefabricated structure can be installed. It may not be necessary for a landowner to obtain a building permit to erect a modular structure, but it is important to check with the local standards. The structure of the foundation needs to be considered, whether one will be built or if it is not needed, and what material it should be constructed from if it is required. It will need to support not only the weight of the structure, but also to sustain the force it could experience in rough weather such as hurricanes or heavy winds and to prevent the collapse of the prefab shelter. Modular buildings can be constructed from lumber, polyvinyl or a durable metal such as steel. Depending on size, location and intended use, one of these materials might be more suitable than another. Steel is a common modular building material as it is strong and resistant to corrosion. It is able to survive extreme temperatures and weather without deteriorating and therefore saves money in terms of maintenance over time. The popularity of using modular and prefabricated buildings will continue to increase due to the benefits in cost reduction, construction speed, portability and range of location possibilities. Modular buildings can be used permanently, as temporary spaces, outdoors or built in an existing structure. Especially in areas with limited transportation and where conventional building supplies may be hard to come by, modular building offers a logical and effective solution.

Modular Buildings Manufacturers
Modular Buildings Manufacturers
Modular Buildings Manufacturers
Modular Buildings Manufacturers - Par-Kut International, Inc.
Modular Buildings Manufacturers - Par-Kut International, Inc.
Modular Buildings Manufacturers - Panel Built, Inc.
Modular Buildings Manufacturers
Modular Buildings Manufacturers
Modular Buildings Manufacturers
Modular Buildings Manufacturers - Abtech, Inc.
Modular Buildings Manufacturers - Abtech, Inc.
Modular Buildings Manufacturers - Par-Kut International, Inc.

Reasons to Build Modular

Modular construction can be described as a process in which buildings are constructed off-site and assembled on-site with large volumetric components required in a building. These are prefabricated buildings are constructed under controlled conditions by making use of the same architect specified materials, which are conventionally used. Modular buildings can be constructed in about half the time with the assurance of better construction with quality management. The modular units or modules of these building systems may form entire rooms, parts of rooms, or separate units such as lifts or toilets. These modules form a structure that is stronger than the traditional construction, as each module is independently engineered to withstand extreme conditions of weather, transportation, and craning.

Modular buildings form when the structure is sealed together to become one integrated wall, floor, and roof assembly. Modular construction is done with the use of plant and facility equipment. These are relocatable buildings are safe and efficient to use. The assembly is completed on-site by placing modules side-by-side, end-to-end, or stacked, in order to allow different configurations and styles in the building layout. Modular construction can be done to construct modular homes, portable offices, mobile offices, and portable buildings.

Modular construction is a greener, faster, and smarter way of constructing buildings.


Modular buildings are environment-friendly. A factory-controlled process is followed for construction that generates less waste and allows tighter construction. As construction is done off-site, the traffic from plant & facility supplies and workers is minimized. Moreover, these portable buildings can be disassembled, relocated or refurbished for further usage, which minimizes the amount of energy used to create a new structure. Dry materials are used in the construction process for improved air quality, ensuring environment friendliness.


The construction of the modular building is a fast process that occurs simultaneously with site work. It is done at a factory and takes half the time than traditional construction, as there is no risk of weather delays. Same architect-specified materials like wood, concrete, and steel are used in modularly constructed buildings.


Like conventional buildings, modular buildings are built with the same building codes and architectural specifications. Modular buildings can be designed to fit in with external aesthetics and are indistinguishable from their site-built counterparts.

Advantages of modular building:

It is pre-manufactured building: Unlike conventional buildings, modular buildings are manufactured in a controlled factory environment, where each module is engineered separately. On the site, each part is fitted together, making construction time quick.

Long-term usage: Portable buildings cater to long-term needs, since they are made of steel, brick, and hardwood.

Customized options available: Endless design and layouts options are available with modular construction to suit the requirements of customers.

A cost-effective alternative: Modular building is a cost-effective alternative to traditional construction as they are prefabricated.

Some of the features of modular buildings are mentioned below:

Resistant to adverse weather conditions: Modular construction makes use of the same raw materials that are used in the traditional building. This makes a modular building safe from extreme weather conditions.

Sturdy construction: It is prefabricated building, which is sturdy in construction and termite-proof in nature.

Low maintenance: Apart from a cost-effective alternative, modular buildings have low maintenance cost.

Are Modular Buildings a Good Alternative for Traditional Buildings?

Modular buildings are prefabricated structures that provide a cost-effective and timesaving alternative to a conventional building. These relocatable buildings are complete stand-alone structures that are available with building extensions, space partitions, and small booths. Modular buildings or portable buildings are made up of different sections that are pre-engineered off-site under a factory-controlled environment. Once the construction is completed, each section is brought to the site, where they are assembled. Widely acknowledged as an ideal solution for temporary or permanent usage, these prefabricated buildings are used in different areas such as schools, offices, gyms, churches, universities, and hospitals. Moreover, relocatable structures can be used as disaster relief housing, military barracks, or temporary offices at construction sites.

Mobile offices and modular buildings are two types of modular construction, which are done using the same materials that are used in traditional building constructions. Mobile offices consist of prefabricated stock buildings, which construction companies utilize as temporary office space, whereas modular buildings are custom-made per customer specifications or requirements. Each section is engineered independently with size ranging from 10 to 18 feet wide to 36 to 76 feet long. However, the module dimensions depend on state shipping regulations.

Prefabricated buildings are a new trend in building construction that is constructed off-site using plant and facility equipment by experienced architects and engineers. These building systems are far less costly than conventional building methods, since foundations are not necessary. Also, regarding materials, labor, and designing, modular buildings are timesaving and cost-effective. Some of the common usages of the prefabricated buildings are security guard houses, storage buildings, and prefab shelters. Portable buildings are extremely versatile and can be used in remote and rural locations. As they can be made in shapes, sizes, and with capabilities according to customer requirements, relocatable buildings are used in various numbers of applications. The height of the ceiling, the thickness of the walls, and other dimensions of portable buildings can be customized according to the needs and requirements of individuals.

Buying guide for modular buildings:

Before buying a modular home, prefab office, or relocatable building, there are many considerations.

Choosing a supplier: Choosing the right modular building supplier is important. Any supplier you choose should provide you free, no obligation proposals and designs. Remember, any supplier you select has to come on-site for installation, so it is important that the supplier has a good reputation in the market.

Designing and planning: Once you choose the supplier, sit and discuss the design or layout you want. Give information to your supplier so that he can propose a suitable modular design for you. They will help you by providing you with different layouts, specifications, and a quote.

Installation process: Once the specifications and layouts are decided by you, your supplier will manufacture the building. After manufacturing process is completed, the modular building will be delivered and assembled on site. The installation will not take more than few days, and after that, the building will be handed to you.

Modular Buildings for the Mining Industry

One of the hardest parts about the mining industry is creating the structures necessary to support a mining colony. One company, Alaska Structures, has created a new method of modular structures and buildings specifically for the mining industry.

This system is called the Denali Building System, and it is a revolutionary system that combines traditional modular structures with fabric buildings. The goal of these structures is to provide mining colonies with housing and office solutions. The main customers of these buildings are in the oil, gas, exploration, construction, and mining industries.

The main benefit of the Denali Building System is that it combines the best aspects of soft-walled and hard-walled structures. The buildings are portable, require minimal assembly and tools, and are easy to install. The buildings also have other benefits, like small shipping volume, a low per-person cost, larger rooms, no hard wiring required, and installation included in the base price. The buildings even have wood floors covered in vinyl and glass windows. Multiple bathroom layouts make these buildings ideal for a variety of uses.

As a mining company, construction company, or any other temporary work company, these buildings provide maximum benefit. Not only are they easy to use and cost-effective, but they can be broken down and used in multiple locations. The structures are the perfect alternative to trailers and other temporary housing, but offer the additional advantage of being cheap to send from one place to another. All portable construction or mining industries can benefit from these modular structures.

Modular Building Types

  • Aluminum buildings are fabricated from low maintenance, lightweight corrosive resistant aluminum. Their convenience is their durability and flexibility in size and use.
  • Booth manufacturers construct portable enclosed steel structures for applications such as security, revenue and/or access control booths or gate houses.
  • Building systems assemble prefabricated parts to construct permanent buildings.
  • Bullet-proof structures meet standards for resisting impact from bullets and other fast moving/high powered objects.
  • Guard Houses are often placed at entrances to secure areas and serve as stations of clearance and general work activity for security or admissions personnel. Sizes will vary by need.
  • Metal buildings are comprised mainly of select metal material and can be used for anything from storage to protection in various sizes.
  • Portable buildings are buildings that can be easily moved or relocated. They are designed to be moved without significant structural modification; examples include portable hospital facilities, classrooms, offices, etc.
  • Pre engineered buildings are built of or with prefabricated sections or parts and are similar to prefabricated structures in use and variety.
  • Prefab buildings are a type of modular building built with prefabricated parts.
  • Prefabricated buildings are different from modular buildings in that they are delivered fully assembled to site. Sizes and uses are varying.
  • Prefabricated garages are modular structures often used to add on to a previously existing garage.
  • Steel buildings are fabricated primarily of steel and are often found in industrial settings as well as for outdoor use. Size possibilities are unlimited.
  • Storage buildings can be made from prefabricated parts, usually those composed of steel materials.
  • Walk-in enclosures are enclosed areas, which can be entered and worked in. Guard houses, x-ray rooms and communications rooms are examples of these.

Modular Building Terms

Accessory - Products for modular buildings that add to a fundamental solid panel building like a window, door, roof vent, etc.
All-bolted Steel Floor - Floor joists of galvanized steel that reach across each module from both sides as well as being bolted to both floor side beams
Aluminum - A light, corrosion and oxidization resistant, metallic material with high electrical and temperature conductivity. This metal is commonly used in construction of modular buildings.

Anchor - Construction for assisting the stabilizing of modular buildings or portable buildings to the ground, combined with straps or cables and turnbuckles or split bolts.

Anodized - Material that has a metal oxide finish formed by a process that produces a durable semi-translucent finish in varying colors.

Architect of Record/Engineer - Architect or engineer who oversees the entire modular buildings projects. This is not the same as the manufacturer's engineer.
Beam - A modular buildings component that has bending loads subject to it. The three types are continuous, simple and cantilever.
Bottom Board - Material placed beneath the floor joists of a modular building or portable building for the protection and keeping in of insulation as well as keeping the building weathertight. Bottom board is typically composed of paper that is fiberglass reinforced, asphalt impregnated or asphalt board.
Bracing - The use of angles, cables or rods in the roof's plane and walls to convey loads to the foundation like seismic, crane thrusts and wind.  
Building - A structure that forms an enclosed, partially enclosed or open area made through a process of planning using components, materials and subsystems to achieve particular usage conditions.  
Building Code - Industry recognized agencies establish specific regulations pertaining to building designs such as design loads, procedures and construction details for structures, typically as applied to certain political jurisdictions like city, county, state, etc.  
Cantilever Beam - A type of beam that provides support at only one end allowing the other end to move freely.  
Cladding - Outer wall paneling and exterior metal roof of the metal building system found in prefabricated steel buildings.

Clear-span - Interior free of columns.
Collateral Loads - Weight caused by further permanent material necessitated by the building contract beyond the building system, like mechanical and electrical systems, sprinklers, ceilings and partitions.  
Column - A primary building component designed to convey the load from the main roof trusses, beams or rafters to the foundation.

Composite - Substance consisting of more than one material with each retaining their distinct beneficial characteristics.

Cool Roof - A metal roof meeting standards for Solar Reflectance and Infrared Emittance as determined by the CRRC. Cool roofs are sometimes painted white or made from specific reflective materials.
Elastic Design - Conception of design using the property of the materials permitting for temporary shape deformation in a predetermined load range.  

Fabrication - Process of manufacturing done in the plant to transform raw material into completed components for prefabricated steel buildings. The fundamental processes are welding, cold forming, punching, painting and cleaning.

Fiberglass - Filaments of glass used in a process with polyester resins, catalysts and hardeners to be molded into shapes.

Gable - Building style, which usually includes one peak with the roof sloping at each side of modular buildings.

Galvanized Steel - Steel covered with zinc metal.

Girt - A horizontal structural component mounted to endwalls or sidewall columns of modular buildings, which serves to support paneling.

Hardwall - Walls of modular buildings that are constructed of masonry, block, tilt-up or pre-cast.

Installation - The construction of prefabricated buildings components of a metal building to produce a finalized portable building - done on location.
Joist - A light weight beam that serves to support a roof or floor.  

Magnetic Shielding - When magnetic fields, electromagnetic or radio frequency interference are deterred and safeguarded from structure.
Manufacturer's Engineer - The engineer under the employ of the manufacturer, who is responsible for the structural design of a prefabricated steel buildings systems formed by the manufacturer.

Multi-span - The interior of building includes columns.

Purlin - The horizontal structure that serves to support the roof covering transferring loads to the main framing members of modular buildings.  
R-Value - R-value measures insulation's resistance to heat flow; it is important for temperature control issues.
Rigid Frame - Structural frame composed of components attached with moment connections causing stability in the frame relative to the design loads, removing the need for bracing in its plane.
Roofing - Modular buildings component that is attached to the frame of the roof covering the building, protecting against weather and fire.

Single Slope - A peak with one slope.

Sound Attenuation - Designed specifically to reduce noise from inside modular buildings to the outside.

Stainless Steel - Resistant to chemicals and corrosion.

Steel - Iron that contains carbon as an essential alloying component up to 1.8% and is workable in certain circumstances.

Structural Insulated Panels (SIPs) - Also known as foam core panels. SIPs are prefabricated insulated structural elements consisting of an engineered sand laminate with a solid foam core four to eight inches thick.

Truss - Designed to perform as a beam since it consists of three or more members that each carry a compression or tension force.  

Turnkey - A product which has been completely outsourced for fabrication, leaving all aspects of manufacturing, material acquirement, assembly, installation and testing to the subcontractor. Turnkey systems are delivered and installed to the purchaser ready to use.

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