Additions, Renovations & Custom Homes in Montgomery County

Start with your address. Get live public records, zoning, and a preview of what your lot could become — then a free consultation with the team that builds it.

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Residential construction

Start with the house as a system.

Every good renovation connects layout, structure, water, air, power and finish work. We plan those relationships before they become field conflicts.

Why Dena House

Engineering judgment, builder accountability.

01

Principal-led

You work with the company principal from the first site conversation through construction and closeout.

02

Designed to be built

Structure, building systems, permit requirements and site logistics are considered with the visual design.

03

Documented decisions

Scope, selections, allowances and changes stay visible so the team can act on the same information.

04

Established trade network

Longstanding relationships with specialized subcontractors support the sequence and standards of major residential work.

How the work moves

Five clear stages from first conversation to final walkthrough.

01

Free consultation

We talk through the house, goals, budget range, timing and what has already been designed.

02

Design and estimate

The team documents existing conditions, develops the plan and coordinates architecture, structure and building systems.

03

Permits and approvals

Dena House coordinates the permit package for our scope and tracks required reviews.

04

Construction

Before mobilization, we confirm access, protection, communication and the current schedule.

05

Walkthrough and warranty

We build a completion list, test systems, coordinate finals and review the finished project with you.

See the complete process

Service area

Local requirements change at every boundary.

We plan additions, renovations and custom homes throughout Montgomery County, Maryland, matching the permit path to the exact address.

Montgomery County, Maryland Map data © OpenStreetMap contributors

Housing market

What houses sell for, city by city.

Our housing market reports track median prices, sales and the change over the last 12 months for detached houses, townhouses and condos across Montgomery County, from Maryland property records.

See the Montgomery County report

City reports: Bethesda, Chevy Chase, Potomac, Rockville and Silver Spring

MONTGOMERY COUNTY / MARKET REPORT

What the county report covers

  • Price change in each city over the last 12 months
  • Ten years of prices and sales by home type
  • What size, lot, age and quality do to a detached house’s price
  • Where the land carries most of the price
  • When the houses were built and how long owners stay