+Design

For adu builders

Small Footprint. Zero Wasted Inches. Sold Turnkey.

An ADU is the hardest design brief in residential construction: a complete home — kitchen, bath, sleeping, storage, laundry — in 400 to 1,000 square feet, under a zoning envelope that fixes the walls before design begins. At that density there are no throwaway decisions. Every cabinet run, every fixture, every inch of clearance is either working or wasted, and wasted inches are visible in the rent.

+Design gives ADU builders interiors engineered for small footprints: space-maximizing layouts and selections, photoreal renderings that make 600 square feet feel like a real home instead of a shed with plumbing, and take-offs priced on your costs so your fixed-price packages actually hold their margin. Delivered under your brand, as part of your turnkey offer.

Your buyers — rental-income households, multigenerational families, aging-in-place planners — are doing math, not dreaming. Show them a finished, furnished, income-ready unit and the math gets easy to say yes to.

Design package example for adu builders
$220,000
Typical detached ADU construction cost
650 sq ft
Average ADU footprint
$1,800-2,800
Monthly rental income a finished ADU commands
$1,000
Pre-construction design fee credited at contract

Sound familiar?

Where design bleeds ADU builders dry.

Every inch is load-bearing in a 600 sq ft plan

A layout mistake that's invisible in a 3,000 sq ft house makes an ADU feel cramped and rent lower. Small-space design — sightlines, storage integration, right-sized fixtures — is a specialty, and it's the one your margin lives on.

Zoning-driven buyers arrive pragmatic, not inspired

ADU customers start from setbacks, lot coverage, and rental yield — spreadsheet energy, not dream-home energy. Renderings of a warm, finished unit convert the feasibility conversation into a purchase decision.

Turnkey pricing dies without locked selections

You sell a fixed-price unit; your client hears "unlimited choices." A defined finish package — visualized, documented, signed — is what keeps "turnkey" from drifting into custom-home scope at ADU pricing.

Tight budgets leave no room for estimate slop

At $150-300k all-in, an ADU budget has none of the fat a custom build hides mistakes in. Take-offs priced on your real costs keep the fixed price fixed — for you, not just for the client.

Every package

What adu builders get in every design.

01

3D renderings that make small feel livable — and rentable

Photoreal interiors of your ADU plans showing how the unit actually lives: the kitchen that works, the bedroom that fits a queen, the light. Homeowners see a home worth building; the rendering also pre-leases it — many owners show it to prospective tenants before framing.

02

Selection packages sized for tiny-footprint reality

Fixtures, appliances, and finishes chosen for small-space performance — 24-inch appliance packages, wall-mount vanities, storage-integrated millwork — bundled into two or three turnkey tiers. Your offer stays fixed-price; your client still feels choice.

03

Take-offs tuned to compact construction

Small jobs punish percentage-based guessing — a $2,000 miss is a visible margin dent on a $180k unit. Every material quantified and priced on your list keeps your fixed-price packages profitable across the whole run of units.

The money play

How the retainer math works in your world.

ADU prospects are the easiest retainer sale in residential construction, because they already expect to pay for feasibility. Bundle design into your pre-construction package: $1,000 gets the homeowner a rendered, specified, priced version of their unit — credited to the contract when they build. It filters the zoning-curious from the actually-building, and it does it while paying you.

The package also solves your comparison problem. Most ADU shoppers are choosing between you, a prefab catalog, and a GC who's never built one. The prefab has slick marketing; the GC has a low number. Your rendered, site-specific, turnkey package beats both — it's custom like the GC and visualized like the prefab, with a take-off-backed price neither can match for credibility.

On subscription, ten packages a month at ~$600 each covers your active prospects plus evergreen renderings of your standard models for marketing. One incremental unit sold per quarter pays for the year.

Questions

ADU Builders ask us.

We build the same two or three ADU models repeatedly. How does that price out?

Very efficiently. Once a model is built in 3D, variants — mirrored plans, alternate finish tiers, site-specific tweaks — cost a fraction of the original package. Standard-model builders get a reusable visual library, then spend packages only on customization and marketing refreshes.

Do you handle the zoning and permit side?

No — feasibility, setbacks, and permitting stay with you and your designer of record. We take over where zoning ends: interior architecture, finishes, visualization, and pricing. The result plugs into your permit set rather than competing with it.

Can renderings be reused in my marketing and on my website?

Yes, without restriction and without attribution — they're your assets. Most ADU builders make rendered model interiors the backbone of their site and lead ads, since photographing occupied rental units is a permission headache forever.

How do turnkey finish tiers get set up?

We design them with you once — typically a standard, upgraded, and premium tier per model, each fully specified and priced on your costs via take-off. From then on, selling finishes is a one-page choice for your buyer instead of a design negotiation.

What's the turnaround for a new custom ADU design?

A new unit — layout refinement, selections, renderings, take-off — typically runs two to three weeks from submission. Standard-model variants come back in days. Either way we commit to a date up front so you can schedule the client presentation.

Is white-label airtight? The ADU space is small and reputation-driven.

Airtight. Every deliverable is branded to your firm, we face your client only as your design team, we never publish your projects, and nothing in the files identifies us. In a referral-driven niche, the design capability accrues entirely to your name — which is precisely the point.

Start here

Put a design department behind your ADU builder business.

Book a 20-minute call — we'll price your first project against your own price list.