ADU Drafting and Design in Palm Springs and the Coachella Valley
Black Diamond designs attached, detached, and garage conversion ADUs across the Coachella Valley, from a feasibility review of your lot through an issued ADU permit in California. Every accessory dwelling unit we draw is planned for rental income, family space, or guest quarters, with permit-ready plans your contractor can build from.
ADU Design That Adds Space and Value to Your Property
Homeowners in Indio, La Quinta, Palm Desert, and across the Coachella Valley are adding ADUs to earn rental income, keep aging parents or adult children close, and host seasonal guests in a space of their own. A well-designed unit also adds lasting value to the property.
California law now works in your favor. Cities must approve or deny a complete ADU application within 60 days, and converting a garage into an ADU no longer requires you to replace the lost parking. Permit-ready ADU plans let you take full advantage of those rules from day one.
Why Work With a Professional ADU Designer
An ADU delivers its value once it is built and approved, and that depends on plans that serve three readers: you, your contractor, and the plan checker. We design every unit as a space you'll enjoy living in or renting out, drawn to California building code and ready for city approval.
Black Diamond understands the full project, from drafting through permitting and construction. We confirm setbacks, lot coverage, utilities, and egress before design hours are spent. Structural and Title 24 sheets are coordinated into one set, and we answer plan check comments directly with the city until your permit is issued. With 350+ projects permitted across the desert cities, plan checkers know our drawings and call us to resolve questions quickly.
Types of ADU's We Design
Attached ADU and JADU
An attached ADU shares a wall with your home and ties into its existing structure and utilities, which often keeps costs down. A junior ADU converts up to 500 square feet inside your current footprint. We draw both to match your home's architecture and roofline.
Detached ADU
A standalone unit gives tenants and guests full privacy and their own entrance. Our detached ADU plans site the unit for access, sun exposure, and utility runs. The set includes the site plan, ADU floor plans, elevations, and coordinated foundation and framing.
Garage Conversion ADU
Converting a garage is often the fastest route to a new unit, since the structure is already standing. Our garage conversion plans resolve ceiling height, insulation, egress, and the new entry so the conversion moves through plan check smoothly.
Serving Indio, La Quinta, Palm Desert and the Desert Cities
3 Steps to Permit-Ready ADU Plans
01
Confirm what your lot allows
We review setbacks, height, lot coverage, utilities, and parking rules for your jurisdiction, so you know which ADU type fits before design starts.
02
Design the unit
We lay out your attached, detached, or garage conversion unit and produce the site plan, floor plans, elevations, structural coordination, and Title 24 documentation.
03
Get it permitted
We submit the set on your behalf and respond to plan check comments until the ADU permit is issued.
Here's What People Are Saying
“Very productive and professional”
Enrique has been very productive and professional with all of the drafting and engineering work we’ve needed to get our business up and running. We highly appreciate your help, and we will definitely keep working with you in the near future!
“They return your calls the same day”
I’m extremely happy with my pool results. They did an awesome job, and most importantly, they return your calls the same day.
“An amazing pool & landscaping design”
I had a limited budget to work with and Black Diamond was able to come up with an amazing pool & landscaping design that will meet all our needs and more. A big thank you to Frank & Enrique for their creativity and understanding.
Explore Our Portfolio of Designs
Custom homes, outdoor living spaces, and commercial projects designed by Black Diamond across Palm Springs and the Coachella Valley.
Related Services
Permit-ready drafting and design for homes and commercial properties across Palm Springs and the Coachella Valley, from our office in Bermuda Dunes.
