Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Home Additions & ADU Across Westgate
A typical Home Addition & ADU project in Westgate runs $45,000-$130,000 for room additions and $90,000-$220,000 for detached ADUs, with permits handled through the Palm Beach County Building Division rather than any city department. We’re familiar with the 1950s-1970s concrete block homes that dominate Westgate, and we know the post-Hurricane Andrew wind-load and opening-protection upgrades these projects trigger. Crews serve Westgate from our South Florida office, and we answer calls live at (561) 475-3903.
Why Rowan Construction Group West Palm Beach Is Westgate’s Preferred Home Additions & ADU Company
We’ve worked on CBS homes from Purdy Lane to the older blocks near Haverhill Road, and we’ve learned that Westgate’s unincorporated status means every permit runs through the county - a different timeline and inspection cadence than West Palm Beach proper. Our crews are background-checked and uniformed; a live person answers calls 24/7. Every visit produces a documented photo record, included as standard.
Since 2007, Rowan has delivered 4,000-plus projects with a written price before any work started. Our 365-Day Done Right Promise is printed on every page, backed by The Haven Standard terms, not an asterisk. We offer a Free Second Opinion on any written estimate - bring a competitor’s quote and we’ll review it line by line at no charge.
Dispatch and scheduling for Westgate are coordinated from our Miami office, with local crews who understand Palm Beach County’s permit portal, inspection scheduling, and the specific failure modes that stall projects here.
Our Home Additions & ADU Services in Westgate
ADU Design & Permitting
ADU design and permitting in Westgate starts with a Palm Beach County Building Division submittal, not a city plan review. Because Westgate sits in unincorporated county, we file directly with the county’s unified development review, which handles zoning verification, setbacks, and utility capacity checks in one path. For the 1950s-1970s CBS homes common here, we also run a property records search early - unpermitted additions or garage conversions surface frequently in this older working-class neighborhood, and county requires disclosure and resolution before new permitted work can close. Our design package includes the engineered drawings, wind-load calculations for 130-plus mph ratings, and product approval documentation your insurance carrier will need later.
Garage Conversion ADU
Garage conversions in Westgate run $30,000-$80,000, but the real variable is what the existing structure reveals. Original CBS garages from the 1960s and 1970s often lack hurricane straps, have flat roofs with degraded membranes from Palm Beach County’s UV exposure and tropical rainfall, and carry electrical panels too small for a dwelling unit. We price the conversion with the full scope: slab moisture barrier, impact-rated windows and doors, upgraded electrical service, and tie-in to the primary structure’s continuous load path. A low bid that skips these items fails county inspection and leaves you with change orders.
New Detached ADU
New detached ADUs in Westgate face the county’s 18-36 inch water table, which makes footing excavation, drainage, and utility rough-in immediately complex. We account for this in the written quote - dewatering, engineered fill, or raised slab systems as the soil conditions dictate. The structure itself must meet current Florida Building Code wind-load and opening-protection requirements, including impact-rated glazing and a continuous load path to foundation. We source from vetted brands including Mighty Buildings and Plant Prefab for panelized or modular options where site access is tight, or we build stick-frame on site when the lot allows. Either way, the quote includes the full permit path, inspection scheduling, and signed inspection cards you can file with your insurer.
Junior ADU & Interior Conversion
Junior ADUs and interior conversions in Westgate’s older homes often trigger the same post-Andrew upgrades as larger additions. Converting part of a 1968 CBS house into a separate dwelling unit means opening walls to verify the existing structure, upgrading the electrical panel, and installing impact-rated openings where the original had single-pane jalousies or standard sliders. We document every step with photos, included as standard, and we do not start work until the written price and scope are signed.
Room Additions
Room additions in Westgate, from $45,000-$130,000, require the same wind-load and opening-protection compliance as ADUs. On a 1968 CBS home off Purdy Lane, our crew added a 320-square-foot primary bedroom and bath, which forced us to open the original flat-roof structure to meet current Florida Building Code requirements. We used impact-rated glazing, new hurricane straps at the addition tie-in, and a continuous load path to the existing slab, then passed the Palm Beach County Building Division’s rough-in and final inspection sign-off on the first try. The homeowner kept the signed inspection cards and product approval documents for their insurance carrier, which helped support a wind-mitigation premium credit.
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.
BeforeAfterTrusted Brands We Service in Westgate
We source across fifty-plus vetted brands, which lets us put honest numbers in the written quote rather than inflated allowances. For Westgate’s wind-load requirements, we specify impact-rated windows and doors from manufacturers carrying Florida Product Approval, and we use GAF or Owens Corning roofing where the addition ties into existing structure. For modular or prefab ADU components, we work with Mighty Buildings, Boxabl, and Plant Prefab where their systems meet local code. Tuff Shed structures are available for utility buildings and studio spaces that don’t require full dwelling-unit compliance. We stock no inventory - every material is specified, priced, and ordered per project, so the quote reflects actual cost.
Common Home Additions & ADU Problems We See in Westgate Homes
- Post-Andrew wind-load triggers on pre-1994 CBS homes. The original house was built before hurricane straps, impact-rated openings, and continuous load paths were required. Any addition or ADU triggers these upgrades on the new work, and often on the existing structure where they’re tied together.
- High water table collapsing trenches during ground work. Palm Beach County’s 18-36 inch water table means footing excavations for ADUs fill with water fast. A quote that doesn’t account for dewatering or engineered fill will generate change orders once the crew hits saturated soil.
- Unpermitted prior work surfacing during permit review. Westgate’s older working-class housing stock includes decades of homeowner additions and garage conversions done without permits. The county requires these be disclosed and resolved - often retro-permitted or demolished - before new work can close, frequently doubling scope and cost.
- UV and rainfall degradation of existing roofs and membranes. The combination of extreme sun exposure and seasonal tropical rainfall in Palm Beach County accelerates failure of flat-roof membranes, caulking, and exterior finishes. We inspect these before pricing the tie-in, because a failed roof deck discovered mid-project is not a change order we want to hand anyone.
Pricing for Home Additions & ADU in Westgate, FL
We put the number in writing before anyone picks up a tool. Under Clause 1 of The Haven Standard, the price is flat, written, and includes the full scope. Here’s what Home Additions & ADU work runs in the Westgate market:
| Service | Price Range in Westgate |
|---|---|
| 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 |
| Window Replacement | $4,500-$15,000 |
What moves a project within these ranges: the condition of the existing structure, whether unpermitted prior work must be resolved, soil conditions and water table depth for ground-disturbing work, and the level of finish specified. A compliant quote includes engineered drawings, permit fees, inspection scheduling, and product approval documentation. A low bid often omits these, leaving the homeowner with failed inspections and uncovered costs. Call (561) 475-3903 for a written estimate - they’re free, and we deliver them before any work starts.
We Also Serve Cities Near Westgate
Our crews work throughout central Palm Beach County, including Home Additions & ADU in Westgate and surrounding areas: West Palm Beach, Riviera Beach, Lake Park, and North Palm Beach. Each city has its own permit path - municipal departments for the incorporated cities, county for Westgate - and we file accordingly.
Serving Westgate, FL - Our Local Coverage Area
We’re based in the Westgate 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 Westgate
Because Florida Building Code triggers current standards on all new construction and substantial improvements, regardless of what the original structure met. Westgate’s pre-1994 CBS homes were built before post-Hurricane Andrew wind provisions, so any addition or ADU requires 130-plus mph wind-load design, impact-rated openings, and continuous load path to foundation - not as an option, but as a condition of Palm Beach County Building Division approval. Call (561) 475-3903 and we’ll walk through what your specific project triggers.
The Palm Beach County Building Division handles all permits and inspections for Westgate, since it is unincorporated county land with no municipal building department. This affects contractor licensing reciprocity, inspection scheduling, and code enforcement timelines compared to neighboring West Palm Beach. We file directly through the county’s portal and schedule inspections on their cadence, not a city’s. Call (561) 475-3903 for an exact timeline on your project.
Yes. Palm Beach County requires disclosure of all prior unpermitted work, and it must be resolved - retro-permitted, brought to code, or removed - before new permitted work can receive final inspection and close. This is common in Westgate’s older working-class housing stock, and failing to account for it in the original scope frequently doubles the project cost and delays the draw schedule. We run property records early to surface these issues before pricing. Call (561) 475-3903 for a free estimate that includes this check.
Documented compliance with current Florida Building Code wind-load and opening-protection requirements can support a wind-mitigation premium credit from your insurance carrier. We provide signed inspection cards, product approval documents, and photo records as standard deliverables - the evidence your underwriter needs to verify the upgrade. Without this documentation, the carrier may rate the property as if the improvements were never made. Call (561) 475-3903 and we’ll explain what your specific project generates.
A compliant quote includes: engineered drawings with wind-load calculations; permit fees and Palm Beach County Building Division filing; inspection scheduling and re-inspection coverage if needed; impact-rated windows and doors with Florida Product Approval numbers; hurricane straps and continuous load path hardware; dewatering or engineered fill for the local water table; and resolution of any unpermitted prior work discovered in records search. A low bid often omits these, leaving the homeowner with failed inspections, change orders, and no documentation for insurance. Call (561) 475-3903 for a written quote that includes the full scope.
Written by Grant Rowan, Owner at Rowan Construction Group, serving Westgate since 2007 under The Haven Standard.