DIY A-Frame Chalet Chicken Coop Plans: 10x12 Walk-In, 8x20 Covered Run

DIY A-frame chalet chicken coop plans for a 10x12 walk-in coop with a steep 18/12 roof and an 8x20 covered run for 20-25 hens. Step-by-step PDF with cut lists.

- Product: Alder Ridge A-frame chalet walk-in chicken coop with 20 ft covered run, building plans
- Format: Digital PDF download
- Pages: 75
- Paper Size: US Letter
- Units: Imperial (feet and inches); main sizes also given in mm
- Dimensions: 10' x 12' coop and 8' x 20' run (10' x 32' 2" overall framing); 11' 1-1/2" W x 34' 3-1/2" L over the roof; 13' 1-1/16" to the coop peak
- Style: Alpine chalet with an A-shaped 18/12 roof, barn-red lap siding, a cedar board-and-batten gable, white trim and a forest-green Dutch door
- Skill Level: Intermediate
- Includes: 34 illustrated build steps, shopping list, master cut list, cut diagrams, panel layouts, framing drawings, templates, elevations and floor plan
- Best For: Backyard flocks of 20 to 25 hens
- Delivery: Instant PDF download after purchase, no physical item shipped

## What's Included in This A-Frame Chalet Chicken Coop Plan

The Alder Ridge is a walk-in chicken coop with low knee walls and a steep 18/12 roof that gives it a sharp A-shaped chalet profile. Behind the coop a 20 ft walk-in run repeats the same steep roof one size smaller, so the two roofs nest into each other like a big and a little chalet.

- 10' x 12' walk-in coop with 107.5 sq ft of floor inside, rising from 48-1/4" at the knee walls to 10' 10-9/16" under the ridge beam, with over 6 ft of headroom everywhere more than 15" in from the walls
- 8' x 20' covered walk-in run with 148 sq ft of ground, over 6 ft of headroom and a 31-1/2" x 74-3/4" run door
- Dutch door 32" x 78-1/2" whose top leaf opens alone for air and light
- Outside nest box on the left wall with 5 nests and a shingled lid for collecting eggs from outside
- Three 110" roost bars with 330" of perch over a removable dropping board
- Guillotine pop door with a ramp straight into the run
- Two awning windows at hen height, two four-lite gable windows, a louvered twin vent and screened eaves
- Open interior with no ceiling joists: the rafters hang from a doubled 2x12 ridge beam on posts
- 1/2" hardware cloth on the run with a 24" apron against digging predators
- Estimated material cost of about $7,300 to $9,400 (prices vary by region and season)

## Chalet Chicken Coop with Long Run for 20 to 25 Hens

The coop gives 4.3 to 5.4 sq ft per hen and the long run 5.9 to 7.4 sq ft per hen, so this large chicken coop houses 20 to 25 chickens; add free-range time for 25 hens. The 5 nests follow the rule of one nest for every 5 hens.

## File Format, Paper Size and Measurements

The plan is a 75-page PDF on US Letter paper. All dimensions are in feet and inches for standard US lumber, with the main sizes also listed in millimeters. Every part has its own code that appears in the cut list, the cut diagrams, the templates and the step pages.

## Who This Walk-In Chicken Coop Plan Is For

This is an intermediate build for DIY builders who are comfortable with a circular saw, a jigsaw, a drill/driver and basic framing. Two people can build it in about 10 to 12 weekend days, plus painting. Spring is the busiest building season, so fall and winter are a good time to price lumber and prepare the site before new chicks arrive. It also makes a practical gift for a backyard chicken keeper.

## How to Use the Plan

1. Buy the plan and download the PDF.
2. Print the shopping list and the master cut list, or open them on a tablet.
3. Buy the lumber, panels, roofing and hardware.
4. Follow the 34 build steps in order, from the site layout to the final details and move-in.

## Digital Product Note

This is a digital download. No physical item is shipped. The PDF is available for instant download right after purchase.

## Terms of Use

This plan is for personal use. You may build as many coops as you like for yourself. You may not resell, share or publish the PDF, its drawings or its renders, and you may not build coops from it for sale without written permission.

## Frequently Asked Questions

### What size chicken coop do I need for 25 chickens?

A chicken coop for 25 chickens needs about 4 sq ft of floor per hen inside plus run space. This plan gives 107.5 sq ft inside the coop and 148 sq ft in the run, or 4.3 and 5.9 sq ft per hen at 25 hens.

### Why does this A-frame chicken coop have such a steep roof?

The 18/12 pitch gives the A-frame chalet look and sheds snow and rain fast. It also keeps most of the air high above the hens, where the twin vent draws off warm, damp air.

### Can I make the chicken run shorter?

Yes. Leave out one or two 40" bays at the outer end and shorten the beams to match, keeping at least 10 sq ft per hen if the hens cannot free-range.

### Is it cheaper to build a chicken coop with a run yourself?

Building a chicken coop with a run yourself lets you control material costs and quality. This plan estimates materials at about $7,300 to $9,400, depending on your region and season.

### How do I download the PDF after purchase?

After checkout you get a download link on the order confirmation page and by email. Click it to download the PDF and save it to your computer, tablet or phone.

## More Building Plans from KRMPLANS

Browse the KRMPLANS shop for more chicken coop plans, sheds, greenhouses and cabins. If you have a question about this plan, send us a message and we will be happy to help.