Zoning and setback pre-check
We verify FAR limits, setbacks, and tree ordinances before design starts.
Home Additions
More home, built on the foundation you already own.
Second-story additions, in-law suites, and kitchen expansions — designed for the DMV's zoning rules and your specific lot.
At a glance
- Lead time
- 3–5 weeks
- Process
- Designer-led
- Materials
- Specified materials
- Service area
- DC, MD, VA
10+ years experience · across the DMV
Licensed & insured · certificates on request
Free estimates · itemized, in writing
In-house crews · no subcontractors on key trades
A home addition in Northern Virginia or Maryland means working within setback rules, FAR (floor area ratio) limits, tree-protection ordinances, and sometimes HOA height restrictions. Dzala reviews all of those before drawing a single line — so the design that gets presented is the design that can be permitted.
We have built second-story additions on Falls Church Cape Cods, rear kitchen additions on McLean colonials, and in-law suites with separate entrances in Bethesda. Each project starts with a site analysis, a zoning check, and a structural assessment of the existing foundation and framing.
Why Dzala
Additions built on solid engineering
The mistake most addition contractors make is designing the addition without first understanding the existing structure. Dzala does a structural assessment of every home before drawing an addition — because the second story has to sit on something, and that something needs to be evaluated first.
- Zoning and HOA pre-check included
- Structural assessment before design
- Single contract from design through punch-out
- Permits managed by Dzala
What you get
The details that separate a Dzala project from builder-grade alternatives.
Structural assessment of existing home
Foundation and framing reviewed before addition is designed.
Full architectural drawings
Permitted structural and architectural drawings included in the contract.
HVAC expansion planning
Existing HVAC capacity assessed; new zones or equipment sized as needed.
Matching exterior finishes
Siding, roofing, windows, and trim matched or upgraded to blend with existing home.
Explore by program
Specific programs under home additions.
Second Story
Full second-story additions on Cape Cods, ranches, and colonials across Northern Virginia and Maryland.
ExploreBathroom Addition
Adding a bathroom where there was not one — full plumbing rough-in, structural framing, and finish.
ExploreADU & In-Law Suite
Accessory dwelling unit and in-law suite construction — separate entrance, kitchenette, full bath, dedicated subpanel, and zoning-cleared design across the DMV.
ExploreKitchen Addition
Expanding a small kitchen with a bump-out or rear addition in Northern Virginia and Maryland.
ExploreProcess
From first conversation to final install.
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01
Site analysis, zoning check, and HOA review
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02
Structural assessment of existing framing and foundation
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03
Architectural design and permit drawings
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04
Permit application and approval
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05
Foundation work or structural reinforcement if required
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06
Framing, roofing, and exterior envelope
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07
MEP rough-in and inspections
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08
Insulation, drywall, and interior finishes
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09
Final walkthrough and close-out documentation
Recent work
Home Additions we have shipped.
Reviews
Read homeowner reviews on Google.
Every Dzala review is published and updated continuously on our Google Business Profile.
Frequently asked
Questions clients ask before booking.
Cannot find what you are looking for? Send a question.
How much does a home addition cost in Northern Virginia?
A bump-out addition (under 400 sq ft) in Northern Virginia typically runs $150,000 to $300,000. A full second-story addition ranges from $250,000 to $500,000+ depending on size, structural complexity, and finishes. Dzala provides itemized written estimates after the site assessment.
Can I add a second story to my Cape Cod or ranch?
In most cases, yes. The critical variables are foundation load capacity and the existing roof framing. Dzala's structural assessment covers both. Many Northern Virginia Cape Cods and ranches have foundations that can carry a second story with modest reinforcement.
How long does a home addition permit take in Fairfax County?
Permit review in Fairfax County for additions typically takes 4 to 8 weeks after submission. We submit a complete package to minimize revision rounds. Some jurisdictions (like Great Falls and McLean) may require additional HOA or ARB approval, which runs on a separate timeline.
Serving DC neighborhoods
Home Additions for the way DC houses are actually built.
Related programs
Service
Second-Story Addition
Full second-story additions on Cape Cods, ranches, and colonials across Northern Virginia and Maryland.
Service
Bathroom Addition
Adding a bathroom where there was not one — full plumbing rough-in, structural framing, and finish.
Service
ADU & In-Law Suite
Accessory dwelling unit and in-law suite construction — separate entrance, kitchenette, full bath, dedicated subpanel, and zoning-cleared design across the DMV.
Service
Residential Design
Residential architectural design for home additions, whole-home renovations, and remodeling in the DMV.
Service
Structural Demolition
Load-bearing wall removal, roof teardown, and structural demolition with permits in the DMV.
Ready when you are
Talk through your home additions project with a designer.
90 minutes in our DC showroom. Material samples on the wall, your room on the table, no quote until we draw it.
- · No charge for the consultation
- · No quote sent without drawings
- · Designer-led — not sales
Get a free estimate for your home additions project
On-site consultation. Written estimate. No pressure.