Home additions & ADU
Kitchen remodeling
Bathroom remodeling
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Home Gardens
Home Gardens homeowners call us when a renovation has stopped making sense as a weekend job and started looking like something that needs a permit, a plan, and a crew. Alder Contractors is a full-service General Contractor that handles room additions, garage conversions, ADUs, roof and window replacement, and whole-home remodels under one contract and one point of accountability. Nelson Ibarra leads our team, and we know the unincorporated Riverside County permit path that Home Gardens projects have to follow. If you’re planning work on a Magnolia Avenue lot or anywhere in 92879, call (833) 467-7020 for a free estimate.
Why Alder Contractors Is Home Gardens’s Preferred General Contractor Company
We earn most of our Home Gardens work by cleaning up jobs that other contractors walked away from or quoted wrong. A big part of that is paperwork. Home Gardens is not Corona, even though the streets run together. An addition or garage conversion here goes through Riverside County Building & Safety, and the county checks for unpermitted structures and informal lot splits before it issues anything new. We prepare the permit package correctly the first time, so the draw schedule is not blown by a mid-build correction.
Home Gardens customers come back to us because we name our scope in writing. When we quote a paver patio with Techo-Bloc or Unilock, the quote says which paver, which base depth, and which edge restraint. When we quote impact windows, the quote includes wind-load-rated frames and glazing that meet Riverside County’s current code, not the cheapest retrofit that slips through. That level of detail is why a strong share of our Home Gardens projects come from referrals on the older ranch streets off Magnolia Avenue.
We respond to Home Gardens estimate requests within one business day and schedule site visits around your availability, including Saturdays. Call (833) 467-7020 and we’ll put you on the calendar.
Styles & brands we work with
General Contractor Services in Home Gardens
General Contractor Services in Home Gardens means running the whole job, not just swinging the hammer. When a homeowner here wants to add a bedroom, convert a garage into a rental unit, or gut a 1970s stucco ranch down to studs, the contractor’s real job is sequencing: county permit, demo, framing, rough-in, insulation, drywall, finishes, final inspection. Home Gardens projects carry an extra layer because the county reviews the entire parcel before it approves new square footage. We handle that review, the corrections, and the re-submittal.
A full home addition in Home Gardens runs $45,000 – $130,000 depending on square footage, foundation work, and whether the lot has legal nonconforming outbuildings that need to be resolved first.
Additions and Garage Conversions
Garage conversions in Home Gardens are common because so many of the older homes here already have detached or attached garages that were informally enclosed decades ago. Ours cost $30,000 – $80,000 when permitted and brought to code. We pull the county permit, verify the slab elevation and framing, and bring everything to current wind-load and energy requirements before inspection.
ADU Construction
An ADU on a Home Gardens parcel runs $90,000 – $220,000. Because many lots along Magnolia Avenue were split informally years ago, the county often requires a lot-line verification and legal nonconforming resolution before it will issue an ADU permit. We handle that as part of the build, not as a surprise change order.
What happens when you call
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A real person answersNo phone trees — you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Construction Company in Home Gardens
As a Construction Company working throughout Home Gardens, we spend a lot of time correcting what the Inland Empire climate does to stucco, roofing, and window assemblies. Summer highs over 100°F and Santa Ana wind events bake asphalt shingles, crack old stucco, and stress every penetration in the building envelope. When a Home Gardens homeowner asks us to replace a roof or install new windows as part of a larger remodel, the right approach is to spec products that are rated for that exposure, not whatever is cheapest at the supply yard that week.
A roof replacement in Home Gardens runs $8,000 – $20,000. Impact window installation runs $8,000 – $25,000 depending on opening count and frame material. Both jobs are permanent improvements, and documented, permitted work is what allows an insurance provider to re-rate the home instead of denying or underpaying a later claim.
Roofing and Exterior Replacement
We source roofing through GAF, CertainTeed, and Owens Corning and install to manufacturer spec so the warranty actually holds. Exterior replacement jobs on Home Gardens ranches frequently include new fascia, drip edge, and flashing at roof-to-wall transitions where decades of Santa Ana wind have pulled things loose.
Whole-Home Remodel Sequencing
A whole-home remodel in Home Gardens typically starts with the exterior envelope, then moves to interior systems, then finishes. When the roof, windows, and siding go on together, we schedule one crew relationship instead of four separate vendors with four separate schedules. That is the core of single-source accountability.
Trusted Brands We Service in Home Gardens
We carry direct access to 50+ name-brand material partners, and for Home Gardens exterior and hardscape work we lean on Techo-Bloc and Unilock pavers, plus Cambridge Pavers where a homeowner wants a specific color blend. For paver driveways and patios, we quote the exact paver, base spec, and jointing material so there’s no allowance ambiguity. For roofing, we install GAF, CertainTeed, and Owens Corning systems with manufacturer-backed warranties. Home Gardens customers get our trade pricing and our crew’s installation, not a big-box contractor desk markup.
See the difference
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After
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AfterCommon General Contractor Problems We See in Home Gardens Homes
- Unpermitted garage conversions from decades ago. Many of the mid-century ranches off Magnolia Avenue had garages enclosed without county sign-off. When the owner wants to add on, Riverside County makes them resolve the old conversion first. We pull the permit, fix the slab elevation and framing, and get the square footage documented.
- Roof and stucco fatigue from Santa Ana wind events. Summer heat and repeated wind cycles crack stucco at corners and lift shingles at eaves. By the time water shows up inside, the roof deck is usually compromised. We inspect and replace before a small leak becomes a full re-sheathing job.
- Single-pane windows and original plumbing in 50-year-old ranches. Many Home Gardens homes still have their original aluminum-frame windows and galvanized supply lines. We replace both as part of whole-home remodels, specing impact-rated glazing that meets current county code rather than a cheapest-bid retrofit.
- Informal lot splits that complicate add-on permits. Because Home Gardens is unincorporated, old parcels along the 91 corridor were sometimes split on a handshake. Riverside County will not issue an addition or ADU permit until the lot-line status is verified and any legal nonconforming structures are resolved. We map that out before you spend a dollar on design.
Pricing for General Contractor in Home Gardens, CA
Here are the line-item ranges we quote in Home Gardens. These are fixed ranges based on our completed projects in 92879, not national averages.
| Project | Typical Range in Home Gardens |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Roof Replacement | $8,000 – $20,000 |
What moves a Home Gardens addition from the low end to the high end is usually site work: pier-and-grade corrections on an old ranch lot, legal nonconforming resolution before the county issues the permit, or upgrading the entire exterior envelope to meet current wind-load code. We write all of that into the quote so you see it before you sign. Call (833) 467-7020 for a free, written estimate. No allowance games.
We Also Serve Cities Near Home Gardens
Our crew runs jobs from the 91 corridor down through Corona, Eastvale, and Norco, and we handle the unincorporated pockets around El Cerrito Corona the same way we handle Home Gardens. If you’re on the edge of 92879 and not sure which jurisdiction you fall under, our General Contractor in Home Gardens team will check the county records before we quote anything. Call (833) 467-7020.
Serving Home Gardens, CA — Our Local Coverage Area
We’re based in the Home Gardens 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 General Contractor in Home Gardens
Home Gardens is an unincorporated Riverside County island, so building permits go through Riverside County Building & Safety in Riverside, not Corona city hall. A neighboring address across the street might be in Corona city limits and follow city code, while your Magnolia Avenue parcel follows county code. Call (833) 467-7020 and we’ll verify your jurisdiction before we quote.
Riverside County requires new additions, ADUs, and structural modifications to meet the wind-load provisions in the current California Building Code, which means engineered connectors, rated sheathing, and impact-rated glazing where exposure warrants it. A compliant quote includes those line items. A cheap quote leaves them out and banks on you not noticing until inspection fails. Call (833) 467-7020 for a quote that will actually pass.
Yes, but the county will make you resolve the legal nonconforming status of the old conversion before it issues a new addition permit on the same lot. That usually means bringing the old slab, framing, and electrical up to current code and documenting the finished square footage. We’ve done exactly this on Magnolia Avenue parcels and can walk you through the sequence. Call (833) 467-7020.
If your addition or garage conversion has county inspection sign-off and the work was done to current wind-load code, your insurer has no basis to deny or underpay a storm claim on that square footage. If the work was never permitted, the adjuster can exclude the entire addition. Permitted work costs more up front and protects you later. Call (833) 467-7020 for a quote that includes the full permit path.
A real quote for Home Gardens includes the county permit fee and plan check, wind-load-rated connectors and sheathing, impact-rated glazing where required, a specific allowance for resolving lot-line or legal nonconforming issues, and a fixed line-item price for each phase. A cheap quote buries those in “allowances” and comes back with a change order after the draw schedule is set. Call (833) 467-7020 for a written quote that holds.
If you’re planning a project in Home Gardens and want one contractor who understands the unincorporated-county permit path, the wind-load code, and the specific problems these older ranch lots bring, reach Alder Contractors. Nelson Ibarra and our crew live this work. Call (833) 467-7020 to schedule your free estimate. We’ll walk the lot, check the county records, and tell you straight what the job costs and what the permit path looks like.
Written by Nelson Ibarra, Owner at Alder Contractors, serving Home Gardens and surrounding Riverside County communities.