If you are searching for a room addition contractor in Rancho Mirage, CA, Niem Construction delivers the experience, licensing, and local knowledge your project demands. Known as the Playground of Presidents, Rancho Mirage is home to Eisenhower Health, The River shopping district, and elegant country club communities that attract retirees, executives, and seasonal residents from across the country. With a community of roughly 18,000 residents and country club homes, mid-century modern residences, gated estate properties, and luxury condominiums with high-end finishes throughout, homeowners here need a contractor who understands both the construction requirements and the design expectations of this community.
We have completed hundreds of residential projects across Rancho Mirage, La Quinta, Palm Desert, Indian Wells, and the greater Coachella Valley over the past 17 years. Every room addition project in Rancho Mirage is managed by our licensed in-house team — not subcontracted out — with clear timelines, written estimates, and direct communication from start to finish. We are fully licensed (CSLB), insured, and rated 5.0 stars by our clients.
Our Room Addition Process in Rancho Mirage
Every room addition in Rancho Mirage follows the same proven process we have refined over 17 years of Coachella Valley construction. Here is exactly what to expect when you hire Niem Construction.
Feasibility Assessment & Design
We evaluate your lot, existing structure, setback requirements, and zoning rules, then create architectural plans for your addition that integrate seamlessly with your home's existing design.
Permit Application & Engineering
We submit plans to the local building department, coordinate engineering reviews, and secure all required permits before construction begins.
Foundation & Framing
New foundation is poured to match your existing structure, framing goes up, and the addition is tied into your home's roof line, electrical panel, and plumbing system.
Electrical, Plumbing & HVAC
All mechanical systems are roughed in, inspected, and connected to your home's existing infrastructure. Desert-rated HVAC systems are sized to handle the added square footage.
Interior Finish & Final Walkthrough
Drywall, flooring, paint, trim, fixtures, and finishes are installed. We match the addition's interior style to your existing home so the new space feels like it was always there.
Room Addition Cost in Rancho Mirage
Accurate pricing depends on your specific scope, materials, and site conditions. Below are typical room addition cost ranges in Rancho Mirage based on our recent project history in the Coachella Valley.
| Scope of Work | Typical Cost Range |
|---|---|
| Small addition — sunroom, bonus room, or home office (100–200 sq ft) | $40,000 – $70,000 |
| Mid-size addition — bedroom with bathroom (200–400 sq ft) | $70,000 – $120,000 |
| Large addition — multi-room or second-story (400+ sq ft) | $120,000 – $250,000+ |
These ranges reflect Rancho Mirage-area pricing. Your actual cost depends on square footage, material selections, structural changes, and permit requirements. We provide free, detailed estimates with no obligation — call (760) 534-8663 or request an estimate online.
Room Addition Permits in Rancho Mirage
Most room addition projects in Rancho Mirage require building permits, grading permits, electrical permits, plumbing permits, and in some cases zoning variances depending on setback requirements. Rancho Mirage reviews residential permits through its Community Development Department. Many neighborhoods require Architectural Review Committee approval before permits are issued, adding 5 to 10 business days. Niem Construction handles the complete permitting process — applications, plan reviews, and all required inspections — so you never have to visit the building department or manage paperwork yourself.
Explore more: Learn more about our Room Additions services, or browse related services including ADU Construction, Garage Conversions, Whole-Home Remodels. Ready to start? Contact us for a free estimate or call (760) 534-8663.