Completed — Detached ADU (Backyard Cottage)

720 sq ft Open-Plan DADU
in Renton, WA

2 Bed / 1 Bath · Open-Plan Kitchen · Concrete Patio · $298,000
Size720 sq ft
Bed / Bath2 / 1
Cost$298,000
Per Sq Ft$414
StatusCompleted

A two-bedroom 720 sq ft detached ADU (DADU) on a flat lot with full concrete patio in Renton, WA. This backyard cottage features an open-plan kitchen with peninsula breakfast bar flowing into the living area, gray flat-panel cabinets with white quartz countertops, and LVP flooring throughout. Sand/beige fiber cement siding with a gable roofline keeps the exterior clean and low-maintenance. Built by Evercrest LLC for $298,000 ($414/sq ft).

01

Exterior & Patio

720 sq ft detached ADU exterior Renton WA — sand beige fiber cement siding gable roof concrete patio backyard cottage

Sand/beige fiber cement siding with white trim and dark gable roof — a neutral, timeless palette that works in any Renton neighborhood.

Full concrete patio wraps around two sides, providing outdoor living and easy access. Security lighting at the roofline. Multiple windows on every wall for natural light throughout the day.

Flat lot makes this backyard cottage feel grounded and accessible — no steps, no grade changes.

02

Kitchen & Living — Open Plan

Open-plan layout with kitchen flowing directly into the living area. The peninsula breakfast bar defines the kitchen zone without closing it off — perfect for a 720 sq ft space.

Gray flat-panel cabinets with white quartz countertops and tile backsplash. Built-in oven and cooktop. Full-height pantry cabinet to the right for maximum storage.

Two bedroom doors and the bathroom visible from the living area — efficient layout that separates sleeping from living zones.

Open-plan kitchen living area detached ADU Renton — gray cabinets peninsula bar LVP flooring two bedrooms
03

Kitchen — Detail

Kitchen detail backyard cottage Renton — gray cabinets white quartz tile backsplash built-in oven pantry

Closer view of the L-shaped kitchen workspace. White quartz countertops contrast with the gray cabinetry for a modern, clean look. Tile backsplash in matching gray tones.

Full-height pantry with fridge niche to the right provides substantial storage — critical in a compact two-bedroom layout. Window above the sink floods the workspace with natural light.

04

Laundry & Bathroom

Dedicated laundry area with stainless steel tub — a practical feature that tenants and homeowners appreciate. Separate from the bathroom for convenience.

Bathroom with sliding glass shower door, white tile surround, floating vanity with undermount sink, and chrome fixtures. Clean, bright, and easy to maintain.

Frosted window for natural ventilation and privacy.

Laundry and bathroom detached ADU Renton — stainless tub shower sliding door white vanity
05

Bathroom — Shower

Bathroom shower backyard cottage Renton — sliding glass door white tile vanity chrome fixtures

Sliding glass shower enclosure with full-height white tile surround. Hand shower on adjustable rail. Clean white floating vanity with single-lever chrome faucet.

The all-white palette makes the compact bathroom feel larger and brighter. Practical, durable finishes that look good on day one and stay looking good for years.

Building Specifications

Size720 sq ft
Bed / Bath2 / 1
Cost$298,000 ($414/sqft)
FoundationConcrete slab
ExteriorFiber cement, sand/beige
KitchenGray cabinets, white quartz
FlooringLVP throughout
BathroomSliding glass shower, white tile
LaundryDedicated area with tub
PatioFull concrete wrap

Project

Status: Completed
Location: Renton, WA
Type: Detached ADU (backyard cottage)

Builder

General Contractor: Evercrest LLC
Service Area: King County, Pierce County, Snohomish County

Understanding Backyard Cottages in Renton

Renton allows detached ADUs (DADUs), commonly called backyard cottages, on most residential lots. Two-bedroom units like this one command significantly higher rent than one-bedroom DADUs — typically $2,200–$3,000/month in the Renton market. A flat lot with concrete patio adds usable outdoor space without the maintenance of a wood deck. Renton's proximity to Boeing, the Landing shopping center, and I-405 makes it a strong rental market. Evercrest LLC handles design, permitting, and construction of backyard cottages throughout King County.

Detached ADU (Backyard Cottage) Construction in Renton — FAQ

How much does it cost to build a backyard cottage in Renton?

Detached ADU (DADU) construction in Renton typically costs $350–$450 per square foot. This 720 sq ft backyard cottage was built for $298,000 ($414/sqft) with gray cabinets, quartz countertops, LVP flooring, and a full concrete patio. Evercrest LLC provides fixed-price contracts.

Can I rent out a detached ADU in Renton?

Yes. Renton allows backyard cottage rentals. A two-bedroom unit like this typically rents for $2,200–$3,000/month. Renton's proximity to Boeing, tech employers along I-405, and the Landing makes it a strong rental market year-round.

Is a 2-bedroom backyard cottage worth it in Renton?

Almost always yes. Two-bedroom detached ADUs command 30–50% higher rent than one-bedrooms for roughly 15–25% more construction cost. The extra bedroom also adds resale value and appeals to a wider tenant pool — couples, roommates, and small families.

What is the best flooring for a rental backyard cottage?

LVP (luxury vinyl plank) is the top choice — waterproof, scratch-resistant, warm underfoot, and looks like real wood. This Renton project uses LVP throughout all living areas. It's the best balance of durability, looks, and cost for rental properties.

Does Evercrest LLC build detached ADUs in Renton?

Yes. Evercrest serves all of King County including Renton, Kent, Auburn, Federal Way, Burien, Des Moines, and Maple Valley. We also cover Seattle, the Eastside (Bellevue, Kirkland, Redmond), Pierce County, and Snohomish County.

Ready to Build a Backyard Cottage in Renton?

Evercrest LLC handles design, permits, and construction — one team, one contract, one point of contact.

Get Your Free Estimate
Or call 425-971-1990