Room Additions · Inland Empire

Room Addition in Eastvale, CA

One of California's youngest cities — master-planned neighborhoods where the original builder finishes are ready for their first real upgrade. Bedrooms, primary suites, family rooms, and second-story additions matched to your home. Licensed CSLB #1108879 · Serving Eastvale since 2008.

Residential & Commercial Construction · Inland Empire
18
Years Experience
Hundreds
Projects Completed
5★
Average Rating
#1108879
Licensed
A+
BBB Rated
0%
Financing Available
Room Additions · Eastvale

When your family outgrows the house but you don't want to leave the neighborhood, a room addition is almost always cheaper than moving — and it's the only option that gets you exactly the space you want. Construction Station designs and builds additions that look original to the home: matched rooflines, matched stucco and siding, and foundations engineered for your soil.

We handle the entire project under one fixed-price contract — architectural plans, structural engineering, Title 24 energy compliance, permits, construction, and finish work. Bedrooms, primary suites with baths, family rooms, home offices, and full second stories.

Working in Eastvale

Eastvale incorporated in 2010, making it one of the youngest cities in California, and it grew almost entirely in one generation — former dairy land transformed into master-planned neighborhoods of two-story family homes between the late 1990s and mid-2010s. That gives Eastvale a housing stock unlike its neighbors: nearly every home has modern electrical, modern plumbing, and an HOA — and nearly every home also has the same builder-grade kitchen, baths, and flooring it was sold with. From the neighborhoods around Harada Heritage Park to the homes near Eastvale Gateway and The Merge, the city is entering its first big remodel cycle, and the difference between builder-grade and custom is dramatic.

Eastvale families rarely add on because the house is failing — they add on because they're growing faster than the floor plan. The most common projects are downstairs bedroom-and-bath additions for multi-generational living, extended great rooms opening to the yard, and loft-to-bedroom conversions. Eastvale's HOAs add an architectural-review step to most additions, and we prepare and shepherd that submittal alongside the city permit so both approvals move in parallel.

Eastvale anchors the western edge of our Inland Empire service area, about 45 minutes from our Yucaipa headquarters via the 60 — the same in-house crew, the same standards.

What We Build

Eastvale room additions, done right.

Bedroom & Suite Additions
Extra bedrooms and full primary suites with baths and walk-in closets.
Family & Great Rooms
Open living space additions that flow into the existing kitchen and dining areas.
Second-Story Additions
Full and partial second stories where lot coverage is tight but square footage isn't.
Design & Engineering
Architectural drawings, structural calcs, and Title 24 energy compliance done in-house.
Permits & Inspections
We submit, manage plan check, and walk every city inspection through final.
Seamless Matching
Rooflines, stucco texture, siding, and interior finishes matched so the addition doesn't read as one.
Eastvale FAQ

Eastvale room addition questions, answered.

How much does a room addition cost in Eastvale?
Room additions in Eastvale typically run $350–$550 per sq ft depending on complexity — a straightforward bedroom addition sits near the lower end, while a primary suite with a full bath, or any second-story work, prices higher. A 400 sq ft bedroom addition generally lands between $140,000 and $220,000 all-in, including design, engineering, permits, and finish work.
How long does a room addition take in Eastvale?
Plan on 3–6 months from signed contract to final inspection for a typical Eastvale addition: 6–10 weeks for design, engineering, and permits, then 10–16 weeks of construction. Second-story additions run longer. We provide a written schedule and keep the same crew on your project throughout.
Do I need a permit for a room addition in Eastvale?
Always — any addition of habitable square footage requires a building permit, and skipping it means unpermitted square footage that hurts you at appraisal and sale. We prepare plans, submit to the City of Eastvale's Building and Safety Division, handle plan-check corrections, and schedule every inspection from foundation through final.
Does Construction Station build room additions in Eastvale?
Yes. Construction Station is a licensed California general contractor (CSLB #1108879) and has served Southern California homeowners since 2008. Eastvale anchors the western edge of our Inland Empire service area, about 45 minutes from our Yucaipa headquarters via the 60 — the same in-house crew, the same standards. Every project gets the same in-house crew — no rotating subcontractors — and starts with a free in-home consultation.
Will our Eastvale HOA approve a room addition?
Most Eastvale HOAs approve well-designed additions — they care about matched rooflines, stucco, and colors, which is how we design anyway. We prepare the HOA architectural submittal with the same drawings we take to the city and manage both approvals in parallel, so the HOA step adds paperwork but rarely adds calendar time.
Free Consultation

Start your Eastvale project. Pick a time.

Book a free in-home design consultation directly on our calendar — we come to you, anywhere in the Inland Empire. Prefer the phone? Call 909-797-6333.

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