
Six separate permit authorities: Village of Chevy Chase, Section 3, Section 5, Village of Somerset, Village of Friendship Heights, and MoCo DPS for unincorporated areas. Jurisdiction confirmed by parcel at every Chevy Chase addition consultation.
A new room built onto the side or rear of your existing home — bedroom, family room, or home office — fully integrated with the existing structure, roofline, and interior layout. Foundation, framing, roofing, electrical, HVAC, and all finishes included.
Add a complete or partial second floor above your existing home — maximizing square footage without expanding the footprint. Full structural engineering required. Adds the most square footage per dollar of lot used.
A dedicated primary bedroom and bathroom addition — one of the most popular additions in Chevy Chase, MD. Includes spacious bedroom, walk-in closet, and luxury bathroom. Significant resale value addition.
A targeted 2–12 foot extension of an existing room — expanding a kitchen, widening a master bath, or creating a breakfast nook. Faster and more affordable than a full room addition.
Expand living space with a dedicated family room or great room off the rear of your home — often combined with kitchen expansion. Vaulted ceilings and large windows are the most popular design choices.
A light-filled, fully conditioned addition with expansive windows for year-round use. Full HVAC connection, insulated walls, and heated floors. Perfect for rear yards with garden or wooded views.
| Addition Type | Typical Cost Range | Size | Timeline |
|---|---|---|---|
| Bump-Out Addition | $40,000 – $120,000 | 50–300 sq ft | 2–4 months |
| Sunroom / Four-Season Room | $80,000 – $160,000 | 150–400 sq ft | 3–5 months |
| Single Room Addition | $120,000 – $220,000 | 200–600 sq ft | 4–7 months |
| Family Room Addition | $130,000 – $260,000 | 300–700 sq ft | 4–7 months |
| Master Suite Addition | $150,000 – $300,000+ | 400–800 sq ft | 5–8 months |
| In-Law Suite Addition | $140,000 – $270,000 | 400–800 sq ft | 5–8 months |
| Second-Story Addition | $200,000 – $420,000+ | 600–1,800+ sq ft | 6–11 months |
We visit your Chevy Chase, MD home, confirm the correct permit jurisdiction among the six possible authorities, review zoning and setback requirements, assess the existing structure, and discuss which addition types are feasible — at no cost. Realistic budget range provided before any design work begins.
In-house architects develop concept plans, floor layouts, and 3D renderings refined until they reflect your vision — reviewed by our construction team to ensure buildability within budget.
In-house structural engineers perform load calculations and specify all structural elements. Complete permit package submitted to the correct Chevy Chase, MD authority. All permit correspondence managed in-house.
Site preparation, footings, foundation, and structural framing completed by our licensed crews. Exterior roofing, siding, and windows installed to match your home's existing exterior materials and profile.
Licensed electricians, plumbers, and HVAC technicians extend all systems into the addition. Interior finishes installed — matching or upgrading your home's existing standard. All permit inspections managed in-house.
All required final inspections scheduled and managed. Thorough punch list walkthrough before project close. Written warranty documentation provided.