Home Additions & ADU in McGregor - One Fixed Price, Permits Handled

Fast, Reliable Home Additions & ADU Across McGregor

Building a home addition or ADU in McGregor usually runs anywhere from $45,000 for a modest room bump-out to $220,000 for a fully permitted detached ADU with kitchen and bath. Most McGregor homeowners we talk to are weighing two things: whether their lot can legally support the footprint they want, and whether their existing 1950s-1970s ranch can handle the structural tie-in. Barrett & Sons Construction has walked enough McGregor Boulevard area properties to know the answer usually begins with the FEMA flood map, not the floor plan. If you’re thinking through an ADU or addition off McGregor Boulevard, Iona Road, or along the Caloosahatchee corridor, call (877) 610-1318 for a straight conversation about what your property will actually allow.

Call (877) 610-1318

Why Barrett & Sons Construction Is McGregor’s Preferred Home Additions & ADU Company

Tom Barrett founded this company in 1998 and still runs it with his sons on-site most days. That matters in McGregor because the 33919 corridor wasn’t built on a grid with predictable setbacks and clean utility runs. The lots off McGregor Boulevard twist, the older cottages near the Edison-era blocks sit on odd angles, and the post-Ian rebuild work has left some slabs visibly out of level. We’ve spent enough time in McGregor to know that a second-story addition on a 1963 ranch means checking the original slab thickness before anyone sketches a beam schedule.

We also answer our own phone. Not a call center, not a voicemail tree. When a McGregor homeowner calls about a garage conversion ADU, they get a live person who can talk through whether their existing garage slab has the elevation to pass Lee County’s flood compliance review. That’s the kind of local knowledge that keeps a project from stalling at permit.

Every estimate we write for McGregor comes as a written line-item scope. Every change after that is a written change order before work proceeds. And every finished job carries our 90-Day Done Right Promise: if something isn’t done right, one call brings Tom back. That’s the way we’ve worked since 1998, and it’s the standard we hold on every ADU and addition across McGregor.

Our Home Additions & ADU Services in McGregor

ADU Design & Permitting

Accessory dwelling units in McGregor live or die at the permitting counter. Lee County’s substantial-improvement rule is a real tripwire here: if renovation or new construction costs on a flood-zone property exceed 50% of the pre-storm assessed value, the entire structure may need to be elevated to current base flood elevation standards. That single rule has rewritten more McGregor ADU budgets than any material cost. We handle the design, the flood-zone analysis, and the permit package as one scope, so you’re not handing a set of plans to a county reviewer and hoping.

Garage Conversion ADU

Most McGregor garages from the 1950s and 60s were built as carports that got enclosed later. The slabs are often thinner than modern code wants, the walls may not be tied to the roof structure properly, and the original electrical was never meant to run a kitchenette and a bath. A garage conversion ADU in McGregor typically runs $30,000 to $80,000 depending on whether we’re chasing a new subpanel, flood vents, or full shear-wall retrofitting. We tell homeowners the same thing every time: the cheap part is the framing, the expensive part is making the old garage behave like a permitted dwelling.

New Detached ADU

For McGregor lots with the room to spare, a detached ADU gives you a clean build without compromising the original home’s roofline or foundation. Expect $90,000 to $220,000 for a code-compliant unit with bath, kitchenette, and its own utility connections. On McGregor properties in the AE flood zone, finished-floor elevation and flood-vent detailing are non-negotiable, and we build those into the estimate from day one. We also specify materials that stand up to subtropical humidity: Schluter waterproofing in the wet areas, proper sheathing tape at every penetration, and no shortcuts on the vapor profile.

Junior ADU & Interior Conversion

A junior ADU, sometimes called an attached interior conversion, is often the most practical path for McGregor homeowners who want rental income or an in-law suite without adding a second foundation. These typically convert an existing bedroom wing, enclosed porch, or bonus room into a self-contained unit with its own entrance and kitchenette. In McGregor’s ranch-heavy housing stock, this often means rerouting plumbing through a slab, which is where our experience with 33919-era construction pays off. We don’t guess at what’s under the concrete; we scope it before we quote it.

If you’re also thinking about a kitchen or bath refresh as part of your addition, our Kitchen Remodeling in McGregor and Bathroom Remodeling in McGregor teams do that work in-house. No handing off subs you’ve never met. One crew, one name on the truck, one set of standards.

Trusted Brands We Service in McGregor

We don’t install mystery materials off the back of a van. On McGregor ADU and addition projects, we routinely specify GAF for roofing tied into the new structure, and we lean on Schluter systems for any wet-area waterproofing inside the new footprint. These are brands you can research before you sign, and they’re part of why our work holds up in McGregor’s humidity and storm cycles. If a brand matters to you, tell us at the estimate; we’ll line-item it in writing.

Common Home Additions & ADU Problems We See in McGregor Homes

• Storm-breached envelopes hiding rot. Hurricane Ian pushed brackish surge through first floors across the 33919 corridor. We regularly open walls on addition tie-ins and find framing rot that no one caught during a cosmetic repair. What looked like a clean room addition becomes a wall-cavity rebuild before framing starts.
• Slabs that predate modern wind codes. McGregor’s 1950s-1970s ranch homes were built before Florida’s post-Andrew structural standards. When we cut a new doorway or tie a second story into an existing wall, we often find rebar spacing and concrete thickness that require structural upgrades to pass inspection. We factor that into the quote; contractors who don’t just surprise you mid-job.
• Flood elevation conflicts on ground-level scopes. If your McGregor property sits in an AE zone, a ground-level addition can trigger finished-floor elevation requirements that change the entire design. We’ve seen homeowners plan a bedroom addition at existing slab height, only to learn the county wants the finished floor raised. We run the flood determination before we draw.
• Jalousie windows and uninsulated walls. Original jalousie windows and hollow block walls are common in McGregor’s older homes. When an addition ties into those conditions, the thermal and moisture profile of the whole space changes. We address airflow, insulation, and window replacement as part of the scope, not as an afterthought.

Pricing for Home Additions & ADU in McGregor, FL

We Also Serve Cities Near McGregor

Most of our McGregor work comes from referrals in the surrounding communities, and we cover the full Fort Myers metro area. If you’re in Cypress Lake, Villas, Iona, or Fort Myers proper, the same crew and the same written-scope standard apply. Our Home Additions & ADU team works across the region, and our Home Additions & ADU in McGregor work gives us direct, daily familiarity with the Lee County permitting landscape.

FAQs - Home Additions & ADU in McGregor