5 Things ADU Homeowners
Don't Know Until It's
Too Late
Before you spend $200K–$350K, read what your contractor and architect probably won't tell you — until after you've already signed.
- Why building bigger often costs you the same — and earns you more
- The $20–30K mistake most homeowners make after construction
- How to know if you can actually afford to build before you pay for plans
- What happens when your architect abandons your project mid-permit
- The ADU type most homeowners never consider — but should
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5 Things Most ADU Homeowners
Find Out Too Late
5 Cosas Que La Mayoría de Propietarios
Descubren Demasiado Tarde
Straight from our consultation process — the insights that save our clients tens of thousands of dollars before a single shovel hits the ground.
Directo de nuestro proceso de consulta — los conocimientos que ahorran a nuestros clientes decenas de miles de dólares antes de empezar.
What we cover in every first consultation
Lo que cubrimos en cada primera consulta
Tap each insight to read the full detail. These are things most firms don't tell you until after they've collected their design fee.
Toca cada punto para leer el detalle completo.
Most homeowners come to us knowing one option: "I want a detached ADU." Within the first few minutes we open up three paths — detached unit, attached addition, or garage conversion. Each has different cost ranges, permit timelines, and long-term income potential.
What you choose today affects what your property is worth in 10 years. We won't let you default to the wrong option just because it was the first one you heard about.
La mayoría de propietarios llegan conociendo solo una opción. En los primeros minutos abrimos tres caminos: unidad separada, adición adjunta, o conversión de garaje. Cada uno tiene diferentes costos y potencial de ingresos.
Construction costs are driven by foundation, framing, MEP (mechanical, electrical, plumbing), and permits — not floor area alone. The jump from a 700 SF 1-bed/1-bath to a 1,000 SF 2-bed/2-bath is often less than $30,000 in hard costs — but can mean $400–$600/month more in rent, every single month for the life of that unit.
We show every client this math before they lock in a size. Most end up going larger than they originally planned, and they're glad they did.
Los costos de construcción son impulsados por la fundación, el encuadre, MEP y los permisos. El salto de 700 SF a 1,000 SF a menudo es menos de $30,000 en costos — pero puede significar $400–$600/mes más en renta.
Whether you need fire sprinklers depends on your ADU's square footage — and it's a decision you need to make before design, not after. Similarly, skipping a separate electrical panel or gas meter during construction might save $4,000 on paper. But adding them once the unit is framed and drywalled? That's a $20,000–$30,000 retrofit job.
We walk through every utility and compliance decision in the consultation so you're not discovering these costs mid-build.
Si necesitas rociadores depende del metraje cuadrado de tu ADU — y es una decisión que debes tomar antes del diseño. Agregar un panel eléctrico o medidor de gas después de la construcción puede costar $20,000–$30,000.
There is no point designing something you can't afford to build. Before we draw a single line, we do a realistic budget and funding check. If your current equity or financing can support a 1,000 SF unit — great, let's design it. If the numbers only work at 700 SF — we tell you that before you spend $8,000–$12,000 on plans, not after.
We'd rather lose the job than put you in a position where you have beautiful plans and no way to build them.
No tiene sentido diseñar algo que no puedes permitirte construir. Antes de dibujar una sola línea, hacemos una verificación realista de presupuesto. Preferiríamos perder el trabajo que dejarte con planos hermosos y sin forma de construirlos.
California's ADU permitting landscape is in constant flux. Cities change processes, add requirements, and cause delays that stretch months into years. Some firms get frustrated and move on — leaving homeowners mid-project with no CAD files, no Revit files, just a PDF that can't be re-used.
Starting over with a new firm means redrawing everything from scratch, re-measuring the property, and paying full design fees again. RAR commits to seeing your project through — whatever it takes, however long it takes.
Algunas empresas se frustran y abandonan — dejando a los propietarios a mitad del proyecto sin archivos CAD. Empezar de nuevo con una nueva empresa significa redibujar todo desde cero. RAR se compromete a ver tu proyecto terminado.
From conversation to keys in hand
De conversación a llaves en mano
One team. Architecture, engineering, construction — all accountable to you from day one.
Un equipo. Arquitectura, ingeniería, construcción — todos responsables ante ti desde el primer día.
Ready to find out what your property can do?
¿Listo para saber qué puede hacer tu propiedad?
Book your free 45-minute ADU consultation. We'll cover your lot, your budget, your options — no pressure, no obligation.
Reserva tu consulta gratuita de ADU de 45 minutos. Cubriremos tu lote, presupuesto y opciones — sin presión ni obligación.