ADU Company in Redlands, CA
Building an ADU in Redlands typically runs $150,000 – $350,000 depending on whether you’re converting an existing structure or starting fresh, and most projects move from permit to completion in 6 – 14 months. What separates Redlands from other Inland Empire cities is its unusual combination of large historic lots with pre-code outbuildings and an active Historic and Scenic Preservation Commission that reviews design compatibility on certain properties. We’re Seedling ADU Builders, and our crews work Redlands jobs from our Inland Empire office in Riverside-San Bernardino. Call us at (707) 383-5338 to talk through your lot and get a written estimate.
Why Redlands Homes Are Different
Redlands sits at about 1,300 feet, which means summer days routinely push past 105°F. Any ADU here needs mechanical cooling that can handle real heat, not a window unit and hope. Winter brings hard frost events that catch exposed utility connections on converted outbuildings, especially when those structures sit well back from the main house.
The housing stock tells the bigger story. Late-Victorian, Craftsman bungalow, and Spanish Colonial Revival homes dominate the core neighborhoods, many built during the 1880s – 1920s citrus boom. These properties sit on unusually large lots and often include detached carriage houses, worker cottages, or secondary outbuildings that look like easy conversion candidates. In practice, they usually need full electrical rewires, galvanized plumbing replacement, and seismic foundation work before they’ll pass ADU permitting.
The Historic and Scenic Preservation Commission adds a layer most neighboring cities don’t have. Properties in or adjacent to historic districts face design-compatibility review, and some north-side estates still hold original citrus-era worker cottages that have been occupied informally for decades. Legalizing those as ADUs means untangling generations of unpermitted alterations while meeting exterior-compatibility standards.
Our Main Redlands Services
Redlands homeowners usually call us about one of three projects: adding living space to the main house, converting an existing garage or outbuilding, or building a new standalone ADU from the ground up.
Home Addition Contractor in Redlands
A home addition in Redlands means matching new construction to historic architecture, often on sloped lots that require careful grading. We see a lot of requests for master-suite additions and expanded kitchens in the older core neighborhoods, where families love their location but need more square footage. Our crew uses quiet tools during school hours and protects original hardwood floors with drop cloths from the first walkthrough. Home Addition Contractor in Redlands
Garage Conversion Contractor in Redlands
Garage conversions here often start with 1920s detached structures that have never seen modern insulation or code-compliant wiring. We handle the full scope: seismic retrofit, new electrical service, plumbing rough-in, and mechanical cooling sized for Redlands summers. Every conversion gets a written price before we touch a tool, and our background-checked technicians wear shoe covers inside the main house even when most of the work happens outside. Garage Conversion Contractor in Redlands
ADU Builders in Redlands
New ADU construction in Redlands ranges from compact backyard studios to two-bedroom units on estate lots. We work with prefab partners including Abodu and Cover when the timeline and lot conditions fit, and stick-built when custom dimensions or historic-district compatibility requirements call for it. Either way, families get the Cedarwell Care Promise: pet-safe products where there’s a choice, and a photo of the clean-up before our crew leaves. ADU Builders in Redlands
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Redlands
We maintain hands-on relationships with leading ADU brands so Redlands homeowners choose what fits their lot, not what we prefer to sell. Our current lineup includes Abodu, Cover, Dvele, and Mighty Buildings for prefab and modular units, plus James Hardie siding for custom builds. Most brand-specific parts ship to our Inland Empire warehouse within 3 – 5 business days. our brands
Pricing for ADU Company in Redlands, CA
| Service | Typical range in Redlands |
|---|---|
| Detached new-construction ADU (studio, 400 – 500 sq ft) | $150,000 – $220,000 |
| Detached new-construction ADU (1-bedroom, 600 – 750 sq ft) | $200,000 – $290,000 |
| Detached new-construction ADU (2-bedroom, 800 – 1,000 sq ft) | $260,000 – $350,000 |
| Garage conversion (single-car, basic finish) | $85,000 – $140,000 |
| Garage conversion (double-car, full kitchen/bath) | $130,000 – $195,000 |
| Home addition (bump-out, 200 – 300 sq ft) | $75,000 – $125,000 |
| Home addition (full room, 400 – 600 sq ft) | $140,000 – $220,000 |
| Historic district design-compatibility consultation | $2,500 – $5,000 |
| Seismic foundation retrofit (typical garage/outbuilding) | $15,000 – $35,000 |
| Full electrical service upgrade (100-amp to 200-amp) | $8,000 – $15,000 |
Prices in Redlands push toward the high end when we find knob-and-tube wiring, galvanized plumbing, or undocumented prior work that needs correction before permitting. Whatever we find during our initial walkthrough, you’ll have a written line-item price before any work starts. No surprise line items after crews arrive.
Neighborhoods We Serve in Redlands
We work across Redlands from the historic core to the newer developments on the south and east edges. Most neighborhoods are within 20 minutes of our Inland Empire dispatch point, so scheduling stays flexible once permits are in hand.
- Smiley Heights
- South Redlands
- North Redlands (estate lots)
- Redlands Heights
- Downtown Redlands historic district
Service Area – Cities Near Redlands
Our crews regularly cross city lines for projects that sit close to Redlands borders. We serve Loma Linda, CA to the west, Mentone, CA up in the foothills to the east, Colton, CA to the northwest, and Highland, CA to the northeast. Each city has its own permit environment and housing stock, so we plan accordingly.
Serving Redlands, CA - Our Local Coverage Area
We’re based in the Redlands area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Company in Redlands
Only if your property sits in or immediately adjacent to a designated historic district. The city planner’s office can confirm your status with a quick call. If review is required, we handle the compatibility documentation as part of our standard process. Call (707) 383-5338 and we’ll check your address.
Most Redlands ADU permits clear in 3 – 5 months, but historic district properties or lots with unpermitted existing structures can add 6 – 8 weeks. We submit complete packages to avoid the back-and-forth that drags out timelines. Call (707) 383-5338 for a realistic schedule based on your specific property.
Yes. Our Cedarwell Care Promise includes quiet tools near bedrooms during school hours, pet-safe products where there’s a choice, and shoe covers with drop cloths inside the main house. We photograph the clean-up before leaving every day. Families with kids and pets are most of who we build for.
Call (707) 383-5338 to schedule your free estimate. We’ll walk your lot, explain what Redlands permitting will require for your specific property, and give you a written price before any work starts. Every project is backed by our 365-Day Done Right Promise.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Redlands Customers Say
"Garage conversion into a studio. They sealed off the work area so dust didn't get into the house, and cleaned up every day before leaving. Calm, careful team to have around."
- Darnell Hobbs"Added a backyard cottage. The team protected our existing landscaping and left the yard clean every evening. Gentle, respectful, and they walked us through each stage calmly."
- Tamara Welsh"Garage to studio conversion with us living right there. They sealed off the dust, cleaned up daily, and respected our quiet hours. No surprise costs. Beautiful."
- Terrence Boylan