A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Bloomington, CA
Fielding ADU Builders handles ADU construction, garage conversions, and room additions throughout Bloomington, CA, with a written price handed to you before any work starts. Bloomington’s housing stock runs heavy on mid-century single-family homes on flat, rectangular lots, which means most ADU and addition projects here move through permitting with fewer surprises than in hillier parts of the Inland Empire. If you’re weighing a backyard unit against a garage conversion, call (361) 315-4177 and we’ll walk you through both options with real numbers.
Why Bloomington Homes Are Different
Bloomington sits on the flat floor of the San Bernardino Valley, and that flat terrain matters more than most homeowners realize. Good drainage design is the difference between a slab that stays dry for thirty years and one that cracks after three wet seasons, so we spec the base material and slope on every Bloomington foundation as if the water table is higher than the map says it is. Most of the homes here were built between the 1950s and 1980s, which means original electrical panels that are often too small for a new ADU’s load, and waste lines that were never sized for a second kitchen or bathroom.
San Bernardino County permit review for ADUs in Bloomington follows the state’s streamlined path, but the county checks structural, drainage, and fire access with real scrutiny. If your lot backs up to an open field or a rail corridor, expect a fire-safety review on the plans. And because Bloomington has a lot of older lots platted before today’s setback rules, a setback variance – the county’s written permission to build closer to the property line than the standard rule allows – comes up often enough that we quote it as part of the job from the start.
Our Main Bloomington Services
Most Bloomington homeowners we talk to are trying to decide between two paths: converting space they already own, or building new square footage. Here is what each one looks like on the ground here.
Room Addition Contractor in Bloomington
A room addition in Bloomington means extending a single-story home outward, usually to add a bedroom, a family room, or an in-law suite, and it touches every system in the house at once. The key local condition is the soil: it moves. We specify the slab reinforcement and foundation tie-in to account for season moisture swings so the addition does not pull away from the original structure over time. Reed Calloway runs the planning on these jobs personally, and the price is written before the first permit drawing is filed. Room Addition Contractor in Bloomington
Garage Conversion Contractor in Bloomington
Garage conversions are the fastest path to rentable living space in Bloomington because the shell is already there: foundation, roof, and three walls. The work is electrical service, insulation, drywall, flooring, and bringing the old slab up to habitable-room standard. Many Bloomington garages from the 1960s and 1970s were built as car storage only, so we almost always pour a leveling to correct the slab pitch before framing the new walls. Call (361) 315-4177 if you want us to look at your garage and tell you straight what it needs. Garage Conversion Contractor in Bloomington
ADU Builders in Bloomington
A detached ADU in Bloomington gives you a separate address, a separate meter, and a unit that works as rental income or family housing. Flat lots make site prep straightforward, but the trade-off is that Bloomington has real solar and fire-access requirements on new detached structures, so the plans have to be drawn right the first time. We work with prefab platforms like Abodu, Cover, and Dvele when the schedule matters most, and stick-build with James Hardie siding when the budget or the lot shape calls for it. ADU Builders in Bloomington
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 Bloomington
We install and build with the systems Bloomington homeowners are already researching: prefab shells from Abodu and Cover, panelized builds from Dvele, and conventional construction wrapped in James Hardie siding. Parts and material lead times vary by manufacturer, but we order at contract signing so the framing package lands before the crew does. See our brands for the full list.
Pricing for ADU Company in Bloomington, CA
These are the numbers we actually quote in Bloomington, before permit fees and plan checks. Every one of them is a written, line-item price you approve before a single nail is driven.
| Service | Typical range in Bloomington |
|---|---|
| Detached ADU (1 bed / 1 bath) | $165,000 – $225,000 |
| Detached ADU (2 bed / 2 bath) | $225,000 – $310,000 |
| Prefab ADU (turnkey, installed) | $185,000 – $275,000 |
| Garage conversion to ADU | $120,000 – $180,000 |
| Room addition (single story) | $145,000 – $210,000 |
| Primary suite addition | $155,000 – $230,000 |
| ADU foundation and site work only | $22,000 – $45,000 |
| Kitchen expansion | $95,000 – $145,000 |
What pushes a Bloomington quote higher than the range above is usually one of three things: a panel upgrade, a drainage system the lot never got around to having, or sewer line work to reach the new unit. The Garrison Standard puts that all in the written price on day one, so the number you approve is the number on the final invoice.
Neighborhoods We Serve in Bloomington
Bloomington is compact, and we cover the whole unincorporated community. Most of our jobs land in the residential blocks north of Cedar Avenue and the streets around Bloomington High School. Here are the areas we work in most:
- The neighborhoods around Bloomington High School
- Blocks off Locust Avenue near the railroad corridor
- Residential streets north of Cedar Avenue
- The older lots along Slover Avenue
Because our scheduling runs from the Inland Empire office and the crews serve Bloomington locally, we can usually get a crew to your property for an estimate within a day or two of your call.
Service Area – Cities Near Bloomington
Beyond Bloomington itself, we take on ADU, garage conversion, and addition work in the neighboring cities. You’ll find the same written-price policy and the same one-year guarantee in Rialto, CA, Fontana, CA, Riverside, CA, and Grand Terrace, CA. If you’re near the line, call us and we’ll tell you straight which service area your address falls into.
Serving Bloomington, CA - Our Local Coverage Area
We’re based in the Bloomington 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 Bloomington
Most detached ADUs in Bloomington take five to seven months from permit filing to final inspection, with prefab builds on the shorter end of that range. San Bernardino County plan review times and any needed variance hearings are the two variables that stretch a schedule, so we file plans early and update you in writing as each approval comes in.
Many Bloomington subdivisions have active HOAs, and while California law restricts HOA rules that unreasonably block ADUs, you still have to submit plans for architectural review. We’ll check your HOA’s covenants before you commit and tell you honestly whether their review process will slow the project down. Call (361) 315-4177 if you have a covenant packet and want us to read it.
No. The Garrison Standard puts every line item in writing before the first day of work, and the price you approve is the number on the final invoice. The only exception is if you change the scope mid-project, and we reprice the change in writing before we touch it.
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 Bloomington Customers Say
"Solid job. Cabinet delivery was a week behind but they worked around it."
- Ben G."Insulation, drywall, and finishes were all well done. Feels like part of the house."
- Pete O."Built a detached ADU behind our house. The builder is a veteran and runs the site like a platoon: schedule posted, crew on time, everything labeled. Finished within a few days of the date."
- Ken W.
