Spartan Structures logo

Finished Portable Cabins, Semi-Finished & Finished Portable Buildings built Texas tough!

Portable Cabins, Semi Finished Cabins, Guard Shacks, & Offices in stock or on order --  September '21

Finished Cabins - Huntsville

Semi Finished Cabins - Bryan

Finished Cabins -Bryan

We decided to begin selling cabins, offices, she sheds, man caves, hunting cabins, lake cabins and weekend retreats. Our portable cabins are custom built to meet your needs. We can build kitchens with cabinets, refrigerators, stoves, micro waves, and custom sinks. We have several wall coverings to choose from for your cabin / office. When you're in town to enjoy a Texas Fighting Aggie Football game and want to sit back and relax afterward, why not relax in a JM Portable Cabin. We try to insulate and vapor barrier the floors for extra relaxing comfort for you. Our tongue and groove flooring is great for keeping things out. We also offer Advan-Tech flooring which is more water proof and has additives in it to help with termites. Our weekend cabins are great for lake cabins, tiny homes, In laws, guest houses, and tiny houses. We are starting with 6 portable cabins for sale, 4 at our Bryan lot and 2 at our Huntsville lot. We can build to certain building codes like Southern Building Code, please contact your salesperson for details. We also can arrange a third party inspection available for the cabins to inspect the electrical and plumbing. The good thing is we have some cabins in stock to look at today. We also have a semi-finished portable cabin / office for you to look at. At JM Portable Buildings LLC we would like to be your go to source for portable cabins / offices.

Standard Features of a Cabins:

options may change by manufacturer**

pictures may show optional features***

Disclaimer: Finished buildings do not comply with current building code and are not a "single family dwelling".

Styles: Classic, Peak, Cottage

Door: (1) 36" or 48" fiberglass door

Walls: 2x4 Studs on 16" centers w/ double corner studs (Stronger Building) 6'8"

Rafters: 2x on 16" centers

Siding: 29 Gauge Wall & Roof Metal

Trim: 26 Gauge Trim

Breaker Box: 125 amp

Paneling: whitewash

Insulation: Ceiling and exterior Walls

Outlets: 4- 110

Ceilings: white rough stuff finished

Lights: 1 to 4 LED 4' light or lights (depends on the size of bldg.)

Windows: single pane

Floor covering: tile

Floor: 3/4" Tongue & Groove Plywood Flooring

Floor Joists: on 16" centers

Skids: Pressure Treated

Available Sizes:    

8' wide x 8' thru 16' Lengths                  

10' Wide x 10' thru 30' Lengths

12' Wide x 10' thru 40' Lengths                  

14' Wide x 12' thru 40' Lengths

16' Wide x 12' thru 40' Lengths

Upgrades available include but not limited to:


3/4" Tongue and Groove Advan-Tech Floor **** Highly recommended

Various Window sizes including Insulated Vynil Windows

more skids

200 amp Breaker Boxes

Insulated Floors with Vapor Barriers

tile and carpet

LED Lights

sheathing on the walls and liner on the roofs - osb

house wrap on walls and felt on roofs

lights of various sizes and styles

stoves, fridges, water heaters, sinks,

outlets-- including 110 GFCI, exterior, and various 220s

Various Door styles including 36" MD100, 36" MD300

Overhead Storage Lofts

electrical exhaust fans for the bathrooms

porch lights




Vertical Roof


cathedral ceilings

faux beams

Wood shutters

Ceiling Fans

14'x36' Finished Classic Barn - H
14'x36' Finished Classic Barn - H
press to zoom
14'x36' Finished Cottage
14'x36' Finished Cottage
press to zoom
14'x36' Classic Barn w/ Corner Porch
14'x36' Classic Barn w/ Corner Porch
press to zoom
14'x34' Finished Classic Barn 12767
14'x34' Finished Classic Barn 12767
press to zoom
14'x36' Semi Finished Cottage
14'x36' Semi Finished Cottage

Moss with Colony Green trim, sheet metal ceiling, canyon timber floor covering, Insulated windows with wood shutters, 9 Lite in the door, Porch extra

press to zoom
14'x34' Classic Barn w/ 8x16 porch
14'x34' Classic Barn w/ 8x16 porch
press to zoom
12'x28' Red Classic Barn
12'x28' Red Classic Barn
press to zoom
12'x24' Finished Cottage / Office
12'x24' Finished Cottage / Office
press to zoom

some other Spartan Buildings