How to Build a Double Dog House – Step-by-Step DIY Guide (Imperial Units)

Looking for a practical and stylish outdoor shelter for two dogs? This DIY double dog house combines two individual dog spaces with elevated platforms, ramps, guardrails, and covered areas, creating a functional design for multiple dogs.

In this step-by-step guide, we’ll walk through the main construction stages, from the base and floor framing to the wall structure, roof framing, exterior panels, ramps, guardrails, roofing, and final finishes.

The complete plan set includes detailed construction drawings, dimensions, material information, and the building details needed to recreate this project.

Ready to start building? Follow the guide below and see how this double dog house comes together step by step. 🐾

Project Dimensions

Materials Needed

Structural Materials

• 4×4 pressure-treated lumber – optional base/skid support and structural supports.
• 2×4 dimensional lumber – floor joists, wall studs, beams, blocking, rafters, and other structural framing members.
• 2×2 dimensional lumber – guardrails, banisters, and top rails.
• 1×3 PVC trim boards – exterior trim around the dog-house openings.

Panels & Sheathing

• 1/2" exterior-grade or marine plywood – exterior wall panels.
• 5/8" exterior-grade or marine plywood – roof sheathing.
• 1/2" plywood – deck and other applicable walking surfaces.

The wall panels are designed to be supported by the 2×4 framing, while the roof uses 5/8" exterior-grade or marine plywood.

Roofing Materials

• Architectural or 3-tab asphalt shingles
• Approved roofing underlayment
• Corrosion-resistant roofing fasteners

The finished roof is specified with dark gray or black asphalt shingles installed over an approved roofing underlayment.

Ramp & Foundation Materials

• 4×4 pressure-treated lumber, ground-contact rated
• Concrete footings
• Compacted crushed gravel
• 4×4 galvanized post bases
• Structural brackets/connectors

The ramp system includes 2×4 joists, 4×4 support beams and posts, concrete footings, and a compacted gravel base.

Fasteners & Hardware

• #8 galvanized exterior wood screws
• 3" exterior-grade screws
• 3.5" exterior-grade deck screws
• Galvanized nails
• LUS24 joist hangers or equivalent
• Structural brackets and mending plates
• Construction adhesive
• Exterior-grade sealant

The plans specify exterior-rated galvanized fasteners and structural hardware throughout the framing and guardrail assemblies.

Finishes

• Exterior-grade white paint for the wall panels
• Dark walnut exterior wood stain for exposed structural elements
• Natural-tone exterior wood stain for decks and ramp surfaces
• Exterior polyurethane, spar urethane, or marine varnish
• Matte black exterior-grade coating for exposed metal hardware

Shopping List

These finishes follow the project's architectural finish schedule: white exterior panels, dark walnut structural wood, natural wood walking surfaces, and black corrosion-resistant hardware.

Tip: For exact quantities, cut dimensions, and purchase units, always refer to the Bill of Materials and individual construction sheets included with the complete plans. The material takeoff quantities are estimates and already account for cutting/waste allowances where specified. 

STEP 1 — Base Skid Assembly

Begin by preparing the three PT-1 pressure-treated 4×4 beams that form the optional raised base for the dog house. These members provide a stable support platform for the floor framing and help keep the structure elevated when installed outdoors or in areas exposed to moisture.

STEP 2 — Assemble the Floor Frame

Begin by assembling the main floor frame using the PT-1 pressure-treated supports, JF-1 floor framing members, and the intermediate BK-1 and BK-2 blocking. Position each component according to the dimensions and spacing shown in the plans, ensuring the frame remains square and properly aligned.

Secure all connections firmly and verify that the floor structure is level before proceeding to the next step.

STEP 3 — Floor And Bottom Plates

Install the floor panel (PL-0) over the completed floor framing, making sure it is properly aligned and securely fastened. Then install the bottom plates (BP-1, BP-2, BP-3, and BP-4) according to the plan layout. These plates establish the base of the wall framing and should be positioned accurately to ensure proper alignment of the walls in the following steps.

STEP 4 — Wall Framing

Assemble and install the wall framing using the ST-1 studs and TP-1 / TP-2 top plates. Position the studs according to the plan layout, including the framed openings and interior partitions, then secure the top plates to complete the wall assemblies. Verify that all walls are properly aligned, plumb, and securely connected to the bottom plates before proceeding to the next step.

STEP 5 — Interior Panels

Install the interior panels (PL-2, PL-3, and PL-4) over the completed wall framing. Position each panel according to the plan layout, ensuring that the panels are properly aligned with the wall framing and openings. Secure them to the framing to create the interior wall surfaces and complete the separation between the dog areas.

STEP 6 — Intermediate Floor

Install the intermediate floor framing using the JF-1, JF-2, JF-3, JF-4, and JF-5 framing members, together with the BK-3 blocking members. Position the joists and blocking according to the plan layout, ensuring they are properly aligned and securely fastened to the wall framing. This assembly provides the structural support for the upper-level floor and completes the intermediate floor framework before installing the floor panels.

STEP 7 — Floor And Bottom Plates

Install the floor panel (PL-1) over the completed intermediate floor framing. Once the panel is properly positioned and secured, install the bottom plates (BP-1, BP-2, BP-3, and BP-4) according to the plan layout. Ensure all plates are accurately aligned and firmly fastened to provide a solid base for the next level of wall framing.

STEP 8 — Wall Framing

Install the upper-level wall framing using the ST-1 and ST-2 studs, together with the TP-1 and TP-2 top plates and BM-1 members. Position the studs according to the plan layout, including the wall openings and interior partitions, then secure the top plates and framing members. Check that all walls are properly aligned, plumb, and securely fastened before continuing to the next stage.

STEP 9 – Interior Wall Panels

With the wall framing in place, install the interior wall panels according to the plan layout. Position the panels over the framed walls, keeping the required openings and transitions properly aligned.

Secure each panel to the wall framing and verify that the edges meet cleanly at corners and intersections. The panels identified as PL-2, PL-3, and PL-4 complete the interior enclosure of the upper structure.

STEP 10 – Roof Framing

With the upper wall structure completed, begin assembling the roof framing. Install the JR-1 rafters along the roof slopes, positioning them according to the spacing and layout shown in the plans.

Add the BM-2 framing member at the upper roof area and install the ST-3 components at the gable ends to properly support and connect the roof structure.

STEP 11 – Exterior Wall Panels

With the roof framing in place, install the exterior wall panels around the structure. Position each panel according to the plan layout, covering the exterior wall framing while maintaining the required openings and transitions.

The exterior panels shown in this step include PL-5, PL-6, PL-7, PL-8, PL-9, and PL-10.

STEP 12 – Entrance Frames

Install the entrance frames at the designated openings on both levels of the dog house. These framing elements define and reinforce the entry areas while providing a finished transition between the interior spaces and the exterior.

The components shown in this step are TB-1 and TB-2.

STEP 13 – Canopies and Braces

Install the exterior canopies and their supporting braces around the upper level of the dog house. These elements provide additional protection over the openings while adding structural support to the canopy projections.

The components shown in this step include CB-1, CB-2, CB-3, and BR-2.

STEP 14 – Roof Panels

Install the roof panels over the completed roof framing. Position the panels along both roof slopes, ensuring they are properly aligned with the rafters and roof edges.

STEP 15 – Asphalt Shingles and Ridge Cap

With the roof panels installed, proceed with the roofing system by installing the asphalt shingles over both roof slopes. Begin at the lower edges and work upward, following the recommended shingle installation pattern.

Finish the roof at the ridge by installing the ridge cap, providing a continuous and weather-resistant transition between both roof slopes.

STEP 16 — Ramp Framing

Install the structural framing for the access ramp, including the ramp joists, support members, and connection hardware. Ensure the ramp framing is securely anchored to the dog house structure and properly supported at the lower end.

STEP 17 — Ramp Panels & Anti-Slip Cleats

Install the ramp panels over the completed ramp framing, securing the panels to the underlying supports. Then install the anti-slip cleats evenly along the ramp surface to provide traction and help prevent the dogs from slipping while using the ramp.

STEP 18 — Guardrails

Install the guardrails around the elevated platform and access area. Secure the vertical posts and horizontal rails to the structural framing, ensuring all connections are firmly fastened and the guardrails provide continuous protection along the exposed edges.

STEP 19 — Corner Trim Installation

Install the corner trim along the exterior corners of the structure. Position each trim piece vertically over the exposed panel edges and secure it to the framing, creating clean, protected corners and a finished exterior appearance.

STEP 20 — Finishes

Apply the specified exterior finishes to complete the dog house. Use exterior-grade white paint on the wall panels, dark walnut wood stain on the designated structural and trim elements, and a natural wood finish protected with exterior polyurethane, spar urethane, or marine varnish on the deck, ramp, and other exposed wood surfaces. Finish the roof with architectural or 3-tab asphalt shingles and complete the exposed support base with exterior-grade black paint.

Watch the Full Building Guide

See how the Double Dog House comes together step by step, from the base and floor framing to the wall structure, roof framing, exterior panels, canopies, ramps, guardrails, roofing, and final finishes.

Note: The video is provided as a visual reference. For complete dimensions, detailed drawings, material information, and construction details, refer to the full set of plans.

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Happy Building! 🐾