Carrington SmurlProduct Designer / Engineer

Spatial Product Design2025

Coastal Cowgirl

A house is not a room you decorate. It is a product with a user, a conversion funnel, and a retention problem — and the person who designed it is also the person on the hook when the dishwasher fails at 11pm.

Role
Designer & operator — Stagecoach Design Co.
Timeline
2025 – present
Team
Solo, with contractors and a cleaning crew
Surfaces
Interiors · Listing · Guest operations
Stack
Interior design · Brand · Listing copy · Python ops tooling
Constraints
  • A real budget on a real mortgage
  • Every design choice has a cleaning and turnover cost
  • Guests arrive with no instructions and no one to ask
  • The design has to survive strangers, repeatedly

Designing a house as a product

I design interiors as Stagecoach Design Co., a studio of Carrington Design Co. Coastal Cowgirl is the project I own outright, which makes it the one where I find out whether my decisions were right — I am the designer, the host, and the person paying the mortgage.

The framing I use is deliberately a product one, because the incentives line up that way:

  • The guest is the user, arriving with no onboarding and nobody to ask.
  • The listing is the funnel. Photographs are the landing page; the nightly rate is pricing.
  • The review is retention. A guest who had a bad night writes it down in public, forever.
  • Turnover is operating cost, and every material choice either adds to it or does not.

That last one is the constraint most interior design never has to answer to. A beautiful textile that cannot survive a wash cycle is not a good design decision here. It is a recurring expense with a photo attached.

What it was

The house read as somebody’s home, which is exactly the problem. Blue lower cabinets against cream uppers, a busy hexagonal backsplash, personal objects on every surface. None of it is bad — it was simply specific to the person who lived there, and a rental has to be legible to a stranger within about four seconds of a photograph loading.

Before
The kitchen before: blue painted lower cabinets, cream upper cabinets, a patterned hexagonal tile backsplash, fluorescent ceiling panels, and personal items across the counters.
After
The open-plan living area after: pale blue walls, a white subway-tile fireplace with a navy mantel, coastal artwork, cream seating, and a glimpse through the archway into the lightened kitchen.
Two competing cabinet colours and a patterned backsplash were doing all the talking. Calming the kitchen down and pulling one blue through the whole floor plan is what let the house read as a single place rather than a series of rooms decorated at different times. The fluorescent panels went too — nothing photographs worse, and the listing is mostly photographs.

The brand was a positioning decision

Coastal Cowgirl is not a decorating theme. Central Texas short-term rentals are overwhelmingly one of two things: modern farmhouse, or beige. Competing inside either category means competing on price.

A coastal palette three hours from the coast is strange enough to be remembered and warm enough not to alienate anyone — and the cowgirl half keeps it honest about where it actually is. The name gave every later decision a test to pass: pale blues, white oak, natural textures, and the Texas elements left in rather than designed out.

The living room: a cream sectional, pale blue accent wall, white subway-tile fireplace with a navy mantel, coastal landscape art, black barn-style sconces, and a wood coffee table on a soft grey rug.
Living roomThe fireplace wall is the one deliberate hero in the house, because it is the shot that leads the listing. Everything else was chosen to photograph well in a wide lens and survive being lived in by strangers — washable textiles, no fragile styling objects, and nothing precious at knee height.

The bunk room is a revenue decision

The most commercially consequential room is the one that looks least designed.

The bunk room: a solid wood bunk bed with green bedding, a deep teal accent wall, white glass-front bookcases, a desk with a chair, and a patterned rug on light wood flooring.
Bunk roomSleeping capacity is the single biggest lever on what a property can charge and who can book it. Adding real bunks — not an air mattress and an apology — moved the house into a different search bracket: families and groups rather than couples. The desk was the second decision; once remote workers became a real segment, a room you can take a call in is a feature, not furniture.

Operations are part of the design

A rental is not finished when the photographs are taken. It has to run.

I wrote the house manual, the turnover checklist, and the cleaning SOP, because a design that only works when the designer is present is not a system. The checklist exists so a cleaner who has never met me resets the house to the same state every time — which is what a guest is actually paying for when they book somewhere that looks like the photographs.

Then I automated the parts that were eating my evenings. I built a Python operations service that handles dynamic pricing, turnover scheduling, vacancy response, and a weekly report, running on a schedule without me. That is the same instinct as putting design tokens in a repository with tests: a standard nobody enforces is a preference.

The decision I got wrong first

I signed a property manager onto a 25% revenue share, and then ran the margin analysis properly rather than optimistically. At the volume this house does, 25% of revenue was larger than the problem it was solving — most of which I had already automated.

The second decision was to move the property from nightly short-term to mid-term stays of thirty nights or more. Fewer turnovers, lower cleaning cost, steadier occupancy, and a guest who treats the place like a home rather than a party venue. It is a worse story and a better business.

What I would tell you in an interview

This is the project I point to when someone asks whether I understand the business side, because there is nowhere to hide in it. I chose the palette, wrote the listing, priced the nights, paid the cleaners, read the reviews, and ate the mistakes. The feedback loop between a design decision and its financial consequence is about thirty days long.

It also made me better at software. Turnover cost taught me more about maintenance burden than any engineering conversation has — when you have personally washed the thing you specified, you specify differently.