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Generational Suites™ by Watermark Design Build

Generational Suites™ · Greater Tampa Bay

Your family, your property, your terms.

A fully custom Generational Suite, built by the same in-house team that engineers, permits, and manages every phase, so the number we quote is the number you pay. From $200K+.

Generational Suites™ · from $200K+

Book a Discovery Call

The call is complimentary. We walk the property, check feasibility, and give you an honest investment range before any design work starts.

Built as one connected project

Generational Suites™, the Watermark way

An accessory dwelling unit is not a shed with plumbing. It is a permanent, independently livable structure on your property, and it deserves the same design rigor as your primary home. That is why we do not sell ADUs as a standalone trade job. Every Generational Suite runs through the same Watermark Way we use on every project: Project Discovery to confirm zoning and lot feasibility before you spend a dollar on design, Pre-Production to lock 3D renders, permits, and every selection before a shovel touches the ground, Active Construction under one dedicated Construction Manager, Project Close-Out with a zero-defect quality certificate, and a full year of Client Care and Warranty after you move in.

What that means in practice: no design-then-redesign cycles once permitting starts, no allowance guessing once construction begins, and one team accountable for the zoning review, the utility feasibility study, the architecture, and the build. Whether the goal is space for aging parents, a rental unit where local zoning allows it, or a place for adult children to land, the suite is engineered to function as a real second home, not an accessory.

Who this is for

Generational Suites™ makes sense when…

  • Families planning for a parent who should not be living alone much longer
  • Homeowners who love their lot and school district and do not want to move to get more space
  • Owners looking at long-term rental or guest-suite income from land they already have

What we remove

The three things that make a generational suites™ project go wrong

Finding out too late that the lot cannot support it

Setbacks, lot coverage, impervious limits, and utility capacity decide whether a suite is buildable at all. We run the zoning capacity review and utility feasibility first, so a no comes before the design fee, not after it.

A separate dwelling treated like a shed

A suite has its own water, sewer, and electrical demand. We scope independent utility design up front instead of discovering a service upgrade during rough-in.

Selections that stall the schedule

Your finishes are chosen and frozen in the Garrison House showroom before trades mobilize, so the suite is not waiting on a tile decision.

How we scope it

  • •6–12 month complete roadmap with explicit zoning checks
  • •Independent utility design (water, sewer, electrical capacity) scoped upfront
  • •Fully turnkey selections process in the Garrison House showroom

What’s included

Zoning and utility feasibility
Lot capacity, setbacks, coverage, and water, sewer, and electrical capacity reviewed before design starts.
Design and stamped engineering
Layouts and photo-realistic renders, then stamped structural drawings and permits through your jurisdiction.
The complete build
Site work, foundation, framing, mechanical, finishes, and a zero-defect handoff with your warranty period activated.

Every Generational Suites™ project runs through The Watermark Way™ — feasibility first, stamped engineering, frozen selections, and a zero-defect handoff tracked live in the Watermark Portal™.

See our process

Project photos

Generational Suites™ gallery

Modern home bar in Tampa, FL with wine fridge and beverage cooler

Common questions

What homeowners ask us about generational suites™

How much does an ADU cost in Tampa?
Generational Suites start at $200K+, and cost climbs with square footage, finish level, and site conditions like utility runs and foundation type. Our Ternpark Terrace project, a full kitchen, two-bathroom detached suite, landed at $380,000. Project Discovery gives you a written, project-specific number tied to your lot before you commit to anything.
Can I build an ADU in my backyard?
In most cases, yes. It depends on lot size, setback requirements, local zoning, and any HOA restrictions. Zoning and lot-capacity review happens in Project Discovery, before design work starts, so you know what’s possible on your property before you’ve spent anything on drawings.
How long does ADU construction take?
Most Generational Suites move from Project Discovery through Client Care in 6 to 12 months, depending on size, permitting timelines, and site conditions. You’ll get a project-specific schedule at the end of Pre-Production, once permits and selections are locked, not a rough guess up front.
Can I rent out my ADU?
It depends on exactly where your property sits, and we treat that as a fact to confirm, not a selling point to assume. In unincorporated Hillsborough County, Pasco County, and Manatee County, a Generational Suite can generally be rented once local zoning and any minimum lease-term rules are met. Inside Tampa’s city limits, independent rental is currently allowed only in four overlay districts: Seminole Heights, the Lowry Park area, the East Tampa Overlay, and the Tampa Heights Overlay, with the main house owner-occupied. Outside those four areas, city code only allows a family-occupied Extended Family Residence, not an independently rented unit. We confirm exactly which rules apply to your address during Project Discovery, before rental income becomes part of your plan.Read the full Tampa Bay county-by-county ADU zoning guide →
Do I need permits to build an ADU in Tampa?
Yes. ADUs require permits covering structural plans, electrical, and plumbing. As your design-build partner, we manage the entire permitting process in-house. It’s part of Pre-Production, not something you coordinate yourself.
Can Watermark Design Build handle both the design and the permitting for my ADU?
Yes. One team manages zoning review, design, engineering, permit submission, and construction, start to finish. You have one point of contact and one contract for the entire project.
Is there a size limit for ADUs in Tampa?
Maximum square footage and lot coverage vary by zoning district and lot size. We review these limits during Project Discovery so your design fits what’s allowed on your property before we design around it.

Where we build it

Generational Suites™ across the Greater Tampa Bay area

Find out what your lot allows.

Book a complimentary discovery call. We will walk the property, check zoning and utility feasibility, and give you an honest investment range before any design work starts.

Book a Discovery Call

Related reading

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