How to Finish a Cabin Shell: The Complete Guide

You’ve finally done it! You’ve bought your first portable unfinished cabin. Congratulations! 

But wait. Don’t start packing your bags. You can’t move in yet! 

It’s time to finish your cabin shell. 

Not to worry! This doesn’t have to be an overwhelming or expensive project. With our complete guide to finishing a cabin shell, you can turn your portable unfinished cabin into a luxurious or rustic retreat. 

Our Step-By-Step Guide to Finishing a Cabin Shell

Begin With a Plan 

Before we begin, let’s talk about unfinished cabins.

An unfinished cabin is a prebuilt, usually portable, structure with a complete exterior but an unfinished interior. This means that all the essential stuff is in place. Your unfinished cabin has walls, a roof, doors, and windows, but it does not yet have flooring, insulation, complete rooms, appliances, or utilities. 

Why, you might ask, would I want to buy an unfinished cabin shell? 

There are so many reasons people prefer unfinished cabins to complete finished ones! With a portable unfinished cabin, you have control over each and every interior design and construction detail. Plus, buying an unfinished cabin is a significantly more budget-friendly way to own a cabin than buying a fully furnished one. 

Before you buy an unfinished cabin, it’s important to take into consideration what finishing an unfinished cabin will require. While purchasing an unfinished cabin will save you money initially, you’ll want to make sure you have the time set aside that it will take to finish a cabin. 

Considerations Before You Begin:

• Time – How long will it take to finish?
• Budget – What’s your financial plan for materials and labor?
• Skills – Do you have the expertise to complete the work, or will you need to hire help?
• Purpose – Will it be a full-time home, vacation retreat, rental, hunting lodge, or off-grid escape?

Make a Plan: How To Finish Your Cabin Shell

Now that you’re committed to finishing your cabin shell. The first step is to make a plan. You’ll want to base this plan on what you intend to use your cabin for and how many resources you have to spend on this project. 

People purchase cabin shells for a variety of reasons. You might be joining the tiny house movement and downsizing your home and life. Maybe you’re just looking for a new home completely designed by yourself. Perhaps you’re creating your own ski home or hunting lodge on some land or crafting a vacation rental for some extra cash.  

Whichever way you plan to use your cabin, understanding what you want your final product to look like is essential to beginning!

Finishing Your Cabin—Estimated Costs in Oklahoma

Based in Perkins, Oklahoma, OK Structures builds high-quality portable unfinished cabin shells and other outdoor structures. We offer free delivery within 50 miles of Perkins and are honored to provide Oklahoma residents with durable, customizable, portable structures.

The cost of finishing your cabin depends on factors like location, materials, and labor availability. Prices can vary significantly outside of Oklahoma, so if you’re finishing a cabin in another state, we recommend researching your local material and labor costs for a reasonable estimate.

For those finishing a cabin shell in Oklahoma, we have firsthand experience with local building conditions, materials, and pricing. We’re happy to provide an estimate and guidance to help you complete your cabin efficiently and cost-effectively.

How to Budget for Materials and Labor 

Even within Oklahoma, the price for finishing a cabin shell will depend on the size of your cabin, the materials you use, and your labor costs. Here are some estimated price ranges:

• Basic DIY Finishing: $5,000–$15,000
• Mid-Range Finishes and Features: $15,000–$30,000
• High-End Finishing (Luxury Features): $30,000+

Create a Timeline and Set Your Expectations 

People say time is money for a reason! To control your budget, set realistic goals for when and how you plan to complete your cabin. Make a list of steps to take in order so you always know what step you are on. Prioritize utilities and insulation first, then start planning flooring, painting, and decorating. 

Floor Plans 

After you’ve chosen your desired portable unfinished cabin design from OK Structures, the best size for your needs, and have chosen between a metal or wood exterior look, you’ll also need to decide what floor plan you’re going to build on the inside. 

Create a floor plan for your cabin and ensure that it is drawn to scale. Graph paper can make this simple! Drawing a floor plan and referring to it throughout the design process will help you visualize your process and give you a guide to where interior walls will go and, if you’re planning more of an open-concept design, where each room will go. 

Knowing what you want to do inside your cabin will help you with every following step. Having a floor plan that indicates where you will place utility connections or switches is essential to the most important step in finishing a cabin shell!

Choosing the Right Location for Your Cabin

Before you put on that tool belt and hard hat or hire your electrician, you will want to ensure the land you want your cabin on is set up and ready for delivery. 

You’re going to need a foundation. Your cabin should be placed on a solid, well-built foundation. Choose between a concrete slab, pier and beam, gravel, or concrete block foundation! You’ll want whatever foundation you choose to be stable, level, and durable so that your cabin sits firmly and evenly on the ground. 

You should also choose a location that is accessible. Even if you’re planning an off-the-grid or remote cabin you probably want it somewhat close to a road. You’ll also want your cabin to be close to utility connections, or, at the minimum, a water source. 

Zoning and Building Code for Cabins in Oklahoma

Before beginning any work, it’s imperative you research your local zoning and building codes. Most areas will require:

• Building Permits – Check with your local government for requirements. You can find Oklahoma’s Building Code Commission here. 
• Septic & Well Permits – If installing plumbing, you’ll need to make sure your cabin complies with state health codes. Specific regulations will vary by county and city! For example, check out Perkin’s permit and inspection resolution for septic and well systems.
• Utility Hookups – Regulations vary depending on whether you’re on-grid or off-grid and by what city or county your cabin is placed. Check with your local building codes or see the state code here.

You might also need a permit to place your cabin on your land. Like with any building project, it’s important to have the permit approved BEFORE you start building. 

Zoning and building codes vary so widely by county and city that you also want to make sure you’re following the correct code and law for your specific area. 

Connect Your Prefab Cabin: How to Add Utilities To Your Cabin Shell

How to Add Electricity to Your Cabin

In order to add electricity to your cabin shell, you will need to connect it to the grid. You might have to add underground wiring and a new electrical panel. The safest way to accomplish this is to consult with a licensed electrician. You’ll also likely need a permit to ensure you comply with all your local codes. 

Planning to live off the grid? Or is grid connection impossible or difficult in your location? Consider adding solar panels or other eco-friendly options! 

Electrical Installation

1. Decide how power will reach your cabin 
   1. Existing Power Lines Nearby – If power lines are close, your utility company can extend service.
   2. Underground vs. Overhead Connection – Overhead lines are more affordable, but underground wiring is safer and more reliable.
2. Install a Meter & Service Panel 
   1. Your utility provider will require a meter base and service panel to track your energy usage. A professional is needed to install this meter box and service panel correctly.
   2. Choose Your Amperage – A standard home connection is 200 amps, but smaller cabins might only need 100 amps. Tiny houses may only require 30 amps.
   3. Utility Approval & Inspection – Before the utility company connects power, an inspection is usually required.
3. Run Electrical Wiring Inside Your Cabin
   1. This is the fun part! Use your floor plan you made to plan where you want your electrical outlets and light fixtures. Don’t forget about appliances! 
   2. Next, install circuit breakers to protect your wiring from overloads and short circuits. 
4. Final Check
   1. Before finishing, have a licensed electrician inspect the wiring to ensure safety and compliance—loose connections or miswiring can be dangerous.
5. Understanding Cost 
   1. Material: Wiring materials, including cables and outlets, can range between $500-$2,000 depending on the size and complexity of your system! Fixtures and appliances will also increase your cost significantly.
   2. Labor: Hiring your electrician can cost you a pretty penny, but their work is important to ensure you and your family’s safety! 
   3. Utility Cost: Connecting to the grid will likely involve costs from your utility company. 

What’s the Best Way to Run Plumbing in a Portable Cabin?

Installing plumbing in your portable unfinished cabin can get tricky quickly. Like electrical work, it’s often best to let the professionals take over for this part. But, if you’re determined to do it yourself, let’s break it down. 

Plumbing is usually completed under the floor, which means that you should not finish the floor of your portable cabin before installing all plumbing features.

First, you’ll need to plan what you are installing. For example, are you planning to outfit your cabin with a toilet or two? What about a shower? Sinks? Maybe a washing machine or a dishwasher? To plan for your water supply and drainage systems, you first have to know what you need them for. 

Water Supply: How Will You Get Water?

Your first step is determining where your water will come from. Common options include:

• Municipal Water Hookup – If your cabin is near an existing water line, you can tap into the city supply. (Don’t forget your pressure tank and pump!)
  • Smaller Hookups, like for an RV or in campgrounds, may work for your situation and location as well! 
• Well Water – If you’re on private land, drilling a well is a long-term solution. (Don’t forget your pressure tank and pump!)
• Rainwater Collection – Collecting rainwater in barrels or underground tanks is an eco-friendly option.
• Transported Water Storage – Some off-grid cabins use large storage tanks filled manually or by delivery services.

Running Water Lines in the Cabin

Once you have a water source, you need to distribute water throughout the cabin:

• Use PEX tubing – It’s flexible, resistant to freezing, and easier to install than copper or PVC.
• Main Line to Fixtures – Run a main cold-water line from the water source to the kitchen, bathroom, and any other fixtures.
• Hot Water Lines – If you have a water heater, split the supply into cold and hot water lines.

Don’t forget to insulate your pipes if you’re placing your cabin somewhere cold! 

Drainage & Wastewater: Where Will the Water Go?

Once you have clean water coming in, you need a wastewater disposal system. Your options depend on local regulations and whether you’re off-grid:

• Septic System: While a little more expansive than other solutions, a septic tank and leach field are great for permanent cabins. You will likely need a permit to install a septic system!
• Composting Toilet: For the off-grid adventure seeker, a composting toilet converts waste into compost without water. Although not always allowed by local codes, this choice is simple and requires no plumbing!
• Holding Tank: Planning to keep that cabin portable? Or are you living in it only temporarily? Then, save yourself the hassle with a holding tank. Just remember to dump your tank frequently at an approved waste station. 

It Might Be Time To Call a Licensed Plumber 

We love an avid do-it-yourself mentality. However, plumbing requires a significant amount of work. Water leaks or mistakes could damage or destroy your cabin shell, so hiring a professional could save you in the long run. If you’re ever unsure about a step while working on finishing a cabin shell, call a plumber, and always be sure to double and triple-check those building codes! 

What’s the Best Insulation For a Portable Cabin?

Insulating your cabin is perhaps the most important step to finishing your cabin! To keep your cabin cozy in the winter and relaxing in the summer, you’ll need to keep those walls, floors, and ceiling insulated! 

There are three main types of insulation used for portable cabins: spray foam, fiberglass, and rigid foam. All are great choices for portable cabins. 

Spray foam insulation is applied onsite and is unique in that it conforms to the surface on which it is applied. This means that the insulation clings to your cabin, ensuring complete protection. Spray foam is also great for sealing cracks, cavities, and other small gaps and cracks. It’s also a top choice for improved energy efficiency and preventing pollutants and allergens from entering your home.

Fiberglass insulation is the kind of insulation that is found in most homes. It is most commonly available in batts and rolls or loose-fill. Fiberglass insulation is great for DIY-ers and for those looking to save a little cash. Fiberglass insulation should be placed on unfinished walls, floors, and ceilings between your cabins, studs, joists, and beams. 

Finally, Rigid Foam insulation is most frequently recommended for tiny homes and other small cabins. Rigid foam is applied to the exterior of a building and is made of a rigid plastic foam board. You can buy these boards in different thicknesses. Rigid Foam insulation is great for cold and damp climates due to its superior thermal protection. It is also great at controlling moisture and preventing air links. However, it is a slightly more expensive option and usually requires an experienced installer to ensure it is up to code! 

No matter what kind of insulation you choose for your portable unfinished cabin, the most important step you need to be aware of as you insulate is ensuring all gaps are sealed for maximum energy efficiency! 

Insulate Your Doors and Windows

Don’t forget those windows and doors! Not only will you need to insulate around your windows and doors, but you’ll also want to purchase special window and door insulation like strips, tapes, or foam cans. These items can be found at your local hardware store!

What is the Best Heating and Cooling System for Small Cabins? 

Now that your cabin shell is insulated, you’ll want to add the hot—or cold—air to keep inside! Depending on where your cabin is located, you may need only a heating system or a cooling system. In most areas, you’ll probably want some version of both! Great heating options for small cabins include mini-splits, wood stoves, electric heaters, and wall heaters! Easy air condition systems also include ductless mini splits and portable or window air conditioners. Depending on the size of your cabin and where it is located, it might be easiest to cool your cabin with ceiling fans and strategic window use.  

As you insulate and install HVAC systems in your cabin, it’s critical to keep in mind the levels of moisture in your cabin and how you can control them. Proper ventilation, insulation, and air circulation will help control moisture, as well as ensure gaps and cracks around exterior walls are sealed. A dehumidifier may be necessary to reduce moisture levels in the air if you live in a particularly damp area; otherwise, ensuring your cabin is properly sealed will help control moisture. 

Add Walls, Floors, Trim, and Paint 

You’re nearly there! Now that your home has electricity, plumbing, and insulation, you can cover up those walls with wallboard. You have lots of options when it comes to wallboard. Drywall is the most common kind for homes but should not be used for small cabins unless they are placed on a concrete foundation. For small cabins, shiplap, beadboard, tongue-and-groove boards, and plywood are more effective as they are lighter weight and can be easily installed. 

What Flooring Is Best For a Small Cabin? 

Some cabins come with flooring already installed; most unfinished cabin shells will have a subfloor installed. If you’ve spent a lot of time installing your own pipes and electricity, you’re going to want to install flooring on top. 

There are a few factors to consider before choosing your ideal flooring option. First, of course, is price. Carpet is usually the least expensive flooring option, but can still get pricey depending on how big your cabin is. Try using the most affordable flooring options in low-traffic areas and add expensive, durable flooring to the rooms you think you’ll spend the most time in. Next, it’s important to consider durability. You’re going to want your flooring to last. When you choose flooring for each room, be sure to consider whether the flooring needs to be able to handle water, children, pets, or lots of foot traffic. Lastly, you’ll want to consider the design of your cabin. If you don’t like how the flooring of your cabin looks, why even bother installing it? You’re going to want the floor of your cabin to flow with the rest of your room, including furniture, rugs, curtains, and other design elements.

Common flooring options for log cabins include Carpet, vinyl, Laminate, Hardwood, and Tile.

Carpet: Carpet is a great choice for both price and comfort. However, in terms of durability, carpet is less than ideal. Carpet traps allergens and can get moldy. It’s also easy to stain. Installing carpets may not be the easiest option for DIYers either. However, for small cabins, all you’ll need are tack strips and padding to install carpet. 

Vinyl: Vinyl is a good “best of both worlds” option for affordability and durability. Vinyl flooring is also waterproof and easy to clean. It’s also fairly durable. If you choose vinyl, you also may want to get a few area rugs as they are designed to look and feel like real wood and tile and aren’t always the most comfortable option. 

Laminate: A more durable and still affordable option is laminate flooring! This flooring mimics the look of hardwood and is excellent for high-traffic areas or rooms in your cabin. 

Hardwood: If you’re fully committed to your portable cabin and want to give it a great look, then hardwood flooring could be the choice for you. This all-natural option can last for years with proper cleaning and upkeep. Choose your favorite kind of wood and lay out your floor exactly how you want it! 

Tile: Lastly, the most durable option for your cabin is tile! Tile is a great choice for bathrooms, kitchens, and any other room that might gather mess or moisture. Choose from ceramic or porcelain tile for your preferred design and feel! You can add tile to your cabin by yourself, but professional help is recommended to prevent tiles from cracking.

How To Install Interior Trim To Finish a Cabin

Adding trim is completely optional. However, trim can help make a cabin look more finished and improve the look of both the floor in your home and the overall design. Trim boards are also easy to find at local department stores. 

All you have to do to trim your unfinished cabin is choose your desired trim style, measure and cut the trim pieces, and apply your trim with either adhesive or nails. Be sure to trim your windows and doors, and use corner trim for a professionally finished look! 

How To Paint Your Cabin Shell 

After your cabin has all the walls and floors installed, it’s time for the fun part! Choose any color or stain to finish out the inside of your cabin! All regular painting rules apply. Be sure to clean your walls, sand or repair any chipped areas, prime the surface, and then choose and apply your paint coats! 

It’s Time to Decorate—Cabin Design Trends

Prefab Cabin Interior Ideas

Now it’s time for the best part! Now that your cabin is liveable, you can turn it into something you love! Use nature-inspired colors and wood accents to match the great outdoors, or put your own spin on your space. Use big, bright, and bold design additions for a maximalist look. Add color and cozy textures for a soft, relaxing space, or create a green design with sustainable or thrifted furniture and design elements. The choice is yours! 

Increase your living space by adding elements to every corner. Try turning the overhead space of your cabin into a loft, or add furniture and a stove to your porch for increased outdoor living space. Invest in furniture that is easily stored away, like foldable desks and kitchen tables or furniture with built-in storage! Add cabinets, shelves, and hanging storage so all your books, picture frames, and utensils have a home too! Do your research and get creative; decorating your space yourself is the best reason to buy an unfinished cabin in Oklahoma!

Must-Have Features For a Cozy Cabin

Our recommendation? Treat your now-finished cabin shell as a safe space for relaxing, unwinding, and recovering. The best use for a cabin is to make it a getaway! 

Every great cabin getaway needs: 

Cozy Blankets and Furniture: Why bother finishing your unfinished cabin shell if you add uncomfy furniture? You will want plush seating like overstuffed armchairs, a deep-cushioned couch, or even a hammock chair for ultimate relaxation. Layer in chunky knit blankets, faux fur throws, and plenty of pillows to make your space feel warm and inviting.

Add wood accents: A cabin isn’t complete without the rustic charm of natural wood. Whether it’s exposed ceiling beams, a reclaimed wood coffee table, or wooden wall paneling, these elements create warmth and character. Consider hand-hewn shelves, a live-edge dining table, or a wood-burning stove for that extra cozy touch.

Soft or Ambient Lighting: The right lighting makes all the difference. Swap out harsh overhead lights for warm-toned lamps, sconces, and string lights. Lantern-style fixtures, dimmable LED bulbs, and candles can add to the cozy atmosphere. A fireplace or electric stove with a flickering glow can also provide both warmth and ambiance.

Area Rugs: Hardwood or plank floors look great in a cabin, but they can feel chilly underfoot. Layering area rugs adds warmth, texture, and a more inviting look. Opt for natural tones, classic plaid patterns, or homemade designs to complement the rustic aesthetic.

Fireplace of Wood Stove: No cozy cabin is complete without a fire feature. Whether it’s a classic wood-burning stove, a modern electric fireplace, or a traditional stone hearth, the warmth and flickering light make the space feel instantly more inviting.

Nature-Inspired Decor: Bring the outdoors in with earthy tones, lots of plants, and natural materials. Think pinecones in a decorative bowl, framed plant images, wildlife-themed art, or even a stack of nature books for added charm.

A Reading Nook or Lounge: Create a quiet escape with a window seat, a rocking chair by the fire, or a daybed draped in soft blankets. A well-stocked bookshelf and a cozy lamp can make this spot perfect for unwinding with a good book. 

Small Kitchenette or Coffee Bar: If your cabin is a true retreat, having a small space for hot drinks is a must. A rustic coffee station with a French press, a kettle for tea, and a selection of mugs will keep things cozy.

Outdoor Living Space: A cabin should connect you to nature. Whether it’s a covered porch with rocking chairs, an outdoor fire pit, or a hammock between the trees, having a comfortable outdoor area allows you to fully enjoy the surroundings.

Storage and Space Optimization

Cabins often have limited space, so making the most of every inch is key. Here are some creative ways to keep your cabin organized without sacrificing style:

Multi-Functional Furniture: Opt for pieces that serve multiple purposes, like a storage ottoman, a bed with built-in drawers, or a fold-out dining table.

Vertical Storage: Use wall-mounted shelves, pegboards for kitchen tools, and tall cabinets to maximize space. Consider hanging baskets or mason jar racks for small item storage.

Hidden Storage Solutions: Utilize under-the-stairs cabinets, built-in window seats with hidden compartments, and recessed shelving in walls for extra storage.

Hooks & Racks: Install hooks for coats, hats, and mugs. A mounted rack for firewood can also double as decor.

Lofted Sleeping or Storage Areas: A loft can provide additional sleeping space or storage if your cabin has high ceilings.

Outdoor Storage: A small shed or covered woodpile keeps outdoor gear organized and ready for use. 

Essential Cabin Maintenance—Tips to Protect Your Investment

A well-maintained cabin will last for generations. Regular upkeep ensures your retreat remains safe and enjoyable.

Seasonal Inspections: Check for roof damage, leaks, or signs of pests before winter and after storms.

Wood Protection: If your cabin has wood siding or a deck, stain or seal it every few years to prevent weather damage.

Gutter & Drainage Maintenance: Clean gutters regularly and ensure water drains away from the foundation to prevent erosion or leaks.

Pest Control: Cabins can attract critters. Seal gaps, store food securely, and check for signs of rodents, termites, or insects.

Water System & Plumbing Care: If your cabin has a water system, drain pipes before winter to prevent freezing. For off-grid systems, periodically inspect water filters and storage tanks.

How To Finish an Off-Grid Cabin 

For the wild at heart, here are some quick tips to finish your off-grid cabin:  

Power Solutions: Solar panels, wind turbines, or a backup generator can provide electricity. Deep-cycle batteries help store energy for nighttime or cloudy days.

Water Sourcing: Rainwater collection systems, wells, or portable filtration setups ensure clean drinking water.

Heating & Cooling: Wood stoves are a classic off-grid heating option. For cooling, cross-ventilation, insulated windows, and shade trees can help.

Composting or Alternative Toilets: Composting toilets are a common off-grid choice, but incinerating or self-contained toilets are alternatives.

Food Storage: A propane or solar-powered fridge, root cellar, or dry pantry can keep food fresh.

Communication & Safety: A satellite phone, radio, or solar-powered Wi-Fi system can help you stay connected in remote areas.

If you’re not totally enthused about composting toilets, combine a few of these tips with the ideas above to make your cabin more energy-efficient.

Conclusion

Finishing a cabin shell is an exciting project with a great reward! Whether you’re building a personal retreat or adding a homey rental for others, taking control of the process allows you to truly create a finished cabin you love. By following these steps, creating a great plan and budget, applying for and complying with local regulations, and decorating with enthusiasm, you’ll be all set to enjoy your finished cabin in Oklahoma and beyond! 

Ready to begin? See all our unfinished cabin shells, including metal and wood cabins, and then get in touch with us today! 

Use our 3D Design tool to design your cabin shell and then get a free quote. We look forward to working with you!

Frequently Asked Questions About Finishing Cabins in Oklahoma