Home additions and dormers in Kirkwood, MO
Kirkwood is the test case for additions across eras. A second-story addition on a 1955 ranch is a different project than a primary suite addition on a 1890s Queen Anne. The 1920s four-square in the historic district has a different review process than the 2008 infill on the next street over. Designing the right addition in Kirkwood means designing for the era in which the home was actually built.
Why Kirkwood homeowners trust Aleto with home additions and dormers
Few St. Louis suburbs have the architectural range of Kirkwood. The original 1850s and 1860s homes near downtown. Victorian and Queen Anne homes from the 1880s and 1890s along Argonne, Adams, and Washington. Pre-war two-stories from the 1910s through the 1940s. Mid-century ranches that filled out post-war neighborhoods. Pockets of the 1990s and 2000s infill. New construction continuing in the historic core. Each era presents a different opportunity for addition and a different set of constraints.
A 1955 ranch with three small bedrooms and a single bath is often a candidate for a second-story addition that doubles the home’s livable square footage. A 1900 Queen Anne is more often a candidate for a sympathetic rear or side addition that preserves the front elevation and historic character. A 1920s four-square is a candidate for a dormer or third-floor build-out using the same patterns we’ve refined in Webster Groves. A 2008 infill home is usually a candidate for a more contemporary addition that picks up the home’s existing language. The right path depends entirely on what era the home was built in and what the household actually needs.
Aleto Construction Group has been completing additions in Kirkwood for decades across all of these eras. As a design-build firm rooted in St. Louis since 1955, we adjust the design approach, the structural strategy, and the exterior detailing to the home rather than applying a single template across every property.
What an addition or dormer in Kirkwood, MO can include
Every project is scoped to the home and the homeowner. Here are the addition types we complete most often in Kirkwood:
Second-story additions on ranches
Adding a full second floor to mid-century ranches that originally maxed out at 1,200 to 1,800 square feet, doubling the home’s livable space and adding a primary suite, additional bedrooms, and bathrooms
Sympathetic rear additions on Victorians
Single or two-story additions off the back of older homes, designed to preserve the front elevation and historic character while opening up modern living space
Dormer additions on pre-war homes
Shed, gable, and eyebrow dormers on 1910s through 1940s homes, sized and detailed to read as period-correct
Third-floor primary suite build-outs
Converting attic space in two-story homes into primary suites, including bedroom, walk-in closet, and primary bath
Side additions on lots that allow them
Lateral additions where the side yard supports them, including expanded kitchens, family rooms, ground-floor primary suites, or attached garages
Detached garages with finished space above
Detached garages with bonus rooms, home offices, or guest suites above, designed to read as carriage houses appropriate to the home’s era
Sunroom and screened porch additions
Three- and four-season sunrooms and screened porches that extend the home into the rear yard
Historic district sensitive work
Roof pitch, dormer proportions, window selection, exterior trim, and siding language designed to read as period-correct rather than as additions
What additions and dormers look like in Kirkwood, MO
Kirkwood additions are shaped by the era the home was built in and where the home sits within the city. Here are the scenarios we see most often, organized by housing type.
Doubling the size of a ranch by going up
A specifically Kirkwood addition pattern: a 1955 ranch on a generous lot, originally 1,400 square feet with three small bedrooms and one bath, gets a full second-story addition that adds another 1,200 to 1,800 square feet, including a new primary suite, two or three additional bedrooms, and additional bathrooms. The structural challenge is significant. The existing foundation and bearing walls need to be evaluated to confirm they can carry the new loads. The original roof comes off entirely, and the new second floor is framed on top of the existing first floor. The first floor stays largely intact during construction, though the household typically relocates for the period when the roof is off. The result is a home with twice its original square footage on a lot that originally supported only a ranch, in a neighborhood where teardowns and rebuilds are otherwise reshaping the street.
Adding sympathetically to a 1900 Queen Anne
A Victorian or Queen Anne home in Kirkwood’s historic core requires a different approach. The front elevation is typically the home’s most architecturally significant feature and should not be touched. The roof is steep, complex, and difficult to extend without destroying the home’s character. The right addition is almost always at the rear, designed in a sympathetic vocabulary (matching siding, era-appropriate windows, roof pitch and detailing that relate to the original) but clearly readable as an addition rather than a fake. Modern preservation thinking favors clarity (the addition is honestly new but respectful of the original) over imitation (the addition pretends to be original). We design to that principle.
Working through Kirkwood’s historic preservation review
Portions of central Kirkwood are within designated historic districts where exterior changes require review through the City of Kirkwood’s Historic Preservation Commission. The review process examines proposed additions against design guidelines that cover massing, materials, fenestration, roof form, and street visibility. Pre-application meetings with the commission help shape the design before formal submission. The review timeline is predictable but adds 6 to 12 weeks to the front of the project. We handle the full process and design with the guidelines in mind from the start, which usually means submissions pass on the first review.
Adding to recent infill construction
Kirkwood’s 1990s and 2000s infill homes are usually well-built, often architect-designed, and sometimes simply too small for how the household has grown. The addition opportunity here is different from older homes. There’s no historic preservation concern. The structural condition is typically good. The detailing language already exists in the home and just needs to be extended. Side additions, rear additions, and detached structures are all common. The work is more design choice than archaeology, and the construction sequence tends to be more predictable than work in century-old homes.
What our clients are saying…
“I used Aleto for an attic addition, and they were great! They were always so kind and helpful. The planning process takes a bit of time, but it is definitely worth it because it allows for a very detailed budget and makes the project go faster when they are actually in the construction phase. They are always very communicative and on schedule for the most part. I recently had a piece of siding come loose from the addition. I texted Mike and he had it taken care of right away. They stand behind their work, and I will only use Aleto for any future projects.”
Aja Martin
Featured home addition project
Lindenwood Park Upgrade
A home in the Lindenwood Park neighborhood just got an elevated upgrade—literally. This second-story addition features a spacious owner’s retreat with a light-filled bedroom, a walk-in closet, and a beautifully tiled full bathroom.
Custom details include 5×5 ceramic wall tile, a 1″ hex mosaic floor with 2′ square rug insets, and warm wood-look LVP throughout. A custom staircase ties it all together with elegance and craftsmanship.
Frequently asked questions
Can our Kirkwood ranch support a second-story addition?
In most cases, yes, with proper engineering. The existing foundation and bearing walls need to be evaluated for the cumulative loads of an added second floor. Most mid-century ranches in Kirkwood were built on full basements with concrete foundation walls and bearing walls in the right places, which generally support a second-story addition with reasonable reinforcement. Where the foundation or framing needs more work, that’s identified during the design phase before any commitment is made.
Does our Kirkwood home need a historic preservation review?
It depends on whether the home is within one of Kirkwood’s designated historic districts and whether the planned addition involves exterior changes. Interior-only work typically doesn’t trigger review. Exterior additions on homes in designated districts go through the Kirkwood Historic Preservation Commission, which holds regular meetings on a published schedule. The first practical step is a pre-application meeting to walk the commission through the proposed massing and materials before formal submission. We organize that meeting, prepare the drawings, and represent the project through approval.
Can we live in the home during a Kirkwood addition?
It depends on the type of addition. Dormer additions and rear or side additions typically don’t require relocation; the household stays through construction with appropriate dust containment. Second-story additions usually require relocation for 4 to 8 weeks during the period when the original roof is off, since the home is exposed to weather during framing. We sequence and weather-protect the work to minimize this period.
More home renovation services in Kirkwood, MO
Looking at a different scope? Explore our other services available in Kirkwood, MO:
Kitchen renovation
We rethink how your kitchen flows, functions, and feels from layout to custom storage and premium appliances.
Learn more →
Bathroom renovation
Convert dated bathrooms into spa-like retreats with custom tile, modern fixtures, and intelligent layouts.
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Whole-home renovation
Full reimagining of your home from top to bottom, designed and built as one cohesive project.
Learn more →
Ready to add space to your Kirkwood, MO home?
A home addition starts with a conversation about how your home isn’t working today and what it could become. Tell us what you’re thinking, and we’ll take it from there.