Fast, Reliable Home Additions & ADU Across Gateway
Adding square footage or a self-contained ADU in Gateway means navigating a review process most contractors never see. The Community Development District’s architectural control committee has to approve your plans before Lee County will even accept a building permit application. That gatekeeping step adds weeks to a timeline if the submittal packet isn’t perfect. Our Home Additions & ADU team knows exactly which roof profiles, window brands, and stucco finishes get a fast approval here, because we’ve been through it dozens of times. Call (844) 638-7249 to schedule your free estimate.
Why Groundwork Construction Co. of Fort Myers Is Gateway’s Preferred Home Additions & ADU Company
Gateway homeowners have a different set of expectations than someone in unincorporated Lee County. You want a builder who shows up knowing the CDD rules cold, not one who learns them on your dime. Derek Hollenbeck and our whole team treat Gateway’s architectural review as a predictable step in the construction schedule, not a surprise we discover two weeks into the job. We keep a current copy of the community’s approved materials list in our design software, so the paint chips, roof tiles, and window specs in your submittal match what the committee expects to see. That single habit has saved our customers more collective weeks than we can count. Our crews are background-checked and arrive in uniform, and when you call with a question at 9 PM on a Saturday, a live person answers. Not a voicemail box that gets checked Monday morning.
Our Home Additions & ADU Services in Gateway
ADU Design & Permitting
This is where Gateway projects succeed or stall before a shovel hits dirt. Our design-build team starts by pulling the current Gateway Architectural Control Committee checklist: approved door and window manufacturers, permitted roof profiles, the exterior color palette the committee expects, and any lot-line setback overlays specific to your village within the community. We build the floor plan around those constraints from day one, then compile the complete submittal packet: elevation drawings, material specifications, site plan, and finish schedule. We file it, track it through review, and don’t cut a single stud until the approval letter is in hand. For homeowners who want a detached ADU in the backyard, we also handle the Lee County impact-fee estimate and utility-tap coordination, which run in parallel with the CDD review so the calendar doesn’t stack unnecessarily.
Junior ADU & Interior Conversion
A Junior ADU is often the fastest way to add a rentable or multi-generational living space in Gateway, because you’re working within the existing exterior envelope. The CDD review is shorter when the roofline and exterior walls aren’t changing. We recently converted a rarely-used formal dining room in a 1999 villa on Panther Run Lane into a ground-floor JADU with its own kitchenette and accessible bath. We matched the new exterior door to the community’s approved manufacturer list, specified a stucco finish and a barrel-tile accent band that continued the roof’s original Boral profile, and chose a Silestone countertop in a warm grey that echoed the existing cabinetry. The committee approved it in a single review cycle, and drywall was hung while an identical project down the street was still waiting on a resubmittal. Derek Hollenbeck personally oversees every JADU design to make sure the kitchenette, bath, and separate entrance meet the county’s minimum-efficiency-dwelling definition without triggering a full detached-ADU review.
Room Additions
A ground-floor bump-out or a master-suite addition in Gateway means tying into a concrete-block structure built between 1990 and 2010. The existing homes are solid but they were framed before Florida’s post-Andrew wind-mitigation code, so a room addition almost always triggers hurricane-strap retrofits and tie-down upgrades where the new roof framing meets the original. We factor that structural uplift work into the upfront price, not a change order halfway through. Homeowners in Gateway also face a specific sequencing requirement: the CDD review comes first, then Lee County permits, then the foundation pour. Miss that order and the county rejects the application outright, wasting three to four weeks. We’ve never had a Gateway room addition rejected at the county level because we never submit one before the architectural committee signs off.
Garage Conversion ADU
Converting an attached two-car garage into a one-bedroom ADU is popular in Gateway’s villa-style neighborhoods, where lot lines are tight and a detached backyard unit would crowd the setback. The exterior footprint stays the same, which simplifies the CDD review. The committee’s main concerns are usually the new driveway configuration, the replacement parking arrangement, and whether the garage door gets replaced with a wall assembly that matches the existing stucco and window style. A typical garage conversion ADU in Gateway runs $30,000-$80,000 depending on whether we’re adding a full kitchen, the bathroom fixture count, and whether the existing slab needs any plumbing trenching. We include the architectural-review submittal in every quote.
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.
Trusted Brands We Use on Gateway ADU Projects
We spec materials from manufacturers the Gateway Architectural Control Committee recognizes and approves without pushback. For hardscape tie-ins around a detached ADU, we use Belgard and Tremron pavers in the color families the community’s published palette allows. For interior countertops and vanities, we draw from our curated portfolio of partner brands so homeowners choose quality they can see and touch, not whatever happened to be in stock at a big-box store. Our 730-Day Done Right Promise covers the entire build, and we back it with product warranties from manufacturers who stand behind their work as firmly as we stand behind ours.
Common Home Additions & ADU Problems We See in Gateway Homes
- Submitting plans without CDD approval first. Lee County will reject the permit application immediately if the architectural committee hasn’t signed off. That mistake resets the calendar by four to six weeks and leaves a homeowner paying carrying costs on an empty lot.
- Picking roof tiles, windows, or paint colors off the community’s pre-approved list. The review committee maintains a specific palette and manufacturer roster. Submitting anything outside it triggers an automatic deferral and a 30-day re-review clock.
- Ignoring the structural uplift on 1990s concrete-block villas. Those homes predate post-Andrew wind-mitigation code. A second-story addition or a heavy tile-roof tie-in nearly always requires hurricane-strap retrofits and decking re-nailing before new framing can legally go up.
- Assuming a detached ADU can go taller than the primary home. Gateway’s CDD guidelines cap accessory-structure height relative to the main residence. Building a two-story apartment over a detached garage usually requires a variance, which adds months and isn’t guaranteed.
Pricing for Home Additions & ADU in Gateway, FL
We quote upfront pricing with no change orders hidden in the fine print. Below are the calibrated ranges we see for Gateway projects. A ground-floor room addition that bumps out a living area and ties into the existing roofline starts around $45,000 and can reach $130,000 for a large master-suite addition with a full bath and walk-in closet. A detached new-construction ADU with its own kitchen, bath, and separate utility hookups runs $90,000-$220,000. Garage conversions sit between $30,000 and $80,000. Every quote includes the CDD architectural-review submittal, the Lee County permit package, and a written line-item breakdown so you know exactly what each dollar buys. We also offer 0% financing for 18 months and $1,000 off projects over $10,000.
| Project Type | Typical Gateway Range |
|---|---|
| Home Addition | $45,000 - $130,000 |
| ADU Construction | $90,000 - $220,000 |
| Garage Conversion | $30,000 - $80,000 |
We Also Serve Cities Near Gateway
If you’re in Fort Myers, Lochmoor Waterway Estates, North Fort Myers, or Pine Manor, our crews cover the whole corridor. Each municipality has different permit sequences, but the process is what we do every day. Call us at (844) 638-7249 for a free estimate wherever you are in the area.
Serving Gateway, FL - Our Local Coverage Area
We’re based in the Gateway 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 - Home Additions & ADU in Gateway
The ARC review typically adds four to six weeks to your pre-construction calendar, assuming the submittal packet is complete and every material choice matches the community’s approved list. An incomplete or non-compliant submittal gets deferred, which resets the clock and tacks on roughly 30 more days. We build that review window into the project timeline from the start so you aren’t wondering why nothing seems to be happening. Call (844) 638-7249 for a schedule estimate on your specific addition.
Yes. Any change of use, even one that doesn’t alter the exterior walls, must go through the Gateway CDD architectural review. The committee will want to see the new driveway and parking configuration, the wall assembly replacing the garage door, and window and door specifications that match the community’s approved manufacturers. We include the full submittal package as part of every garage-conversion quote.
Barrel or flat concrete tile that matches the existing roof profile and comes from a manufacturer on the community’s pre-approved list, such as Boral or Eagle, sails through review fastest. Metal roofing and asphalt shingles often trigger additional scrutiny or an outright deferral because they deviate from the community’s dominant tile aesthetic. We always spec a tile that matches both the original profile and the current approved-manufacturer roster.
Gateway’s CDD guidelines cap accessory-structure height relative to the primary residence. A detached ADU taller than the main house typically requires a variance, which involves additional hearings and isn’t guaranteed. We can review your lot’s specific zoning overlay and tell you within the first consultation whether a two-story ADU is viable or whether a single-story footprint makes more sense for your timeline. Call (844) 638-7249 for an honest assessment.
Yes. We assemble every document the committee requires: elevation drawings, material specifications with manufacturer names and model numbers, the site plan showing setbacks, and the finish schedule with paint chips and roofing samples. We file the packet, monitor it through review, and only proceed to the Lee County permit stage after the approval letter is in hand. You never have to chase a submittal or guess what’s missing.
Get Your Free Estimate for a Home Addition or ADU in Gateway
If you’re ready to add space to your Gateway home, start with a conversation. We’ll walk your property, talk through what the CDD will approve, and give you a written line-item quote that includes the architectural-review submittal and every permit. No vague bids, no disappearing crews, and a 730-Day Done Right Promise that backs every nail we drive. Call (844) 638-7249 to schedule your free estimate.
Written by Derek Hollenbeck, Owner at Groundwork Construction Co. of Fort Myers.