(410) 844-5578
Tidemark Build Co
About US Our ProcessService Area
Construction ManagementCustom Home BuildingKitchens & BathsPre-ConstructionWhole-Home RemodelsAll Services
Edgewater & Mayo, MDAnnapolisSeverna Park, MDPasadena, MDKent Island
Spa Creek FarmhouseMayo Beach RenovationKent Island Kitchen & Great Room Severna Park AdditionAll Projects
CareersBlogContactGallery
(410) 844-5578· Call us directly
Tidemark Build Co

(410) 844-5578

hello@tidemarkbuild.com

214 Chinquapin Round Rd, Annapolis, MD

Our Company

  • About US
  • Our Process
  • Service Area

Our Services

  • Construction Management
  • Custom Home Building
  • Kitchens & Baths
  • Pre-Construction
  • Whole-Home Remodels
  • All Services

Location

  • Edgewater & Mayo, MD
  • Annapolis
  • Winchester, VA
  • Severna Park, MD
  • Pasadena, MD
  • Kent Island

Our Projects

  • Spa Creek Farmhouse
  • Mayo Beach Renovation
  • Kent Island Kitchen & Great Room
  • Severna Park Addition
  • All Projects

© 2026 Tidemark Build Co. All rights reserved.

Equal Housing Opportunity
Licensed Home Builder

Loading...

Waterfront renovations

The South River communities — Mayo, Edgewater, Harness Creek, Selby-on-the-Bay — are home to waterfront properties that range from 1960s ranchers on good lots to newer construction with outdated interiors.

  1. Home
  2. /Locations
  3. /Edgewater & Mayo, MD

FEMA Substantial Improvement — What It Means Here

Waterfront renovation on the South River comes with a specific set of requirements. FEMA flood zone designations affect what's required when a renovation exceeds 50% of assessed value. Critical Area buffers control setbacks and impervious surface. Tidal zone exposure demands different materials and different detailing than an inland project. We build these requirements into every project from the first drawing, not as an afterthought when the permit comes back with conditions.

Our Mayo Beach Renovation is the benchmark for this work: a 1987 rancher the Donovans had lived in for 22 years, gutted to studs, reconfigured floor plan, second-story primary suite over the existing garage, FEMA Substantial Improvement compliance handled in Phase 1, and a new composite deck rated for tidal zone exposure. The finished home appraised $340,000 above pre-renovation value. The Donovans report eating breakfast watching herons on the South River every morning.

We work throughout the South River and Rhode River communities — Edgewater, Mayo, Davidsonville, Shady Side, and the surrounding area. If your waterfront property needs more than a cosmetic refresh, bring us in for a site walkthrough. We'll tell you exactly what the project picture looks like.

Services in Anne Arundel County

  • Additions & Expansions→
  • Construction Management→
  • Custom Home Building→
  • Kitchens & Baths→
  • Whole-Home Remodels→
  • Pre-Construction→

Communities Served

  • Edgewater
  • Mayo
  • Davidsonville
  • Shady Side
  • Selby-on-the-Bay
  • Harness Creek
  • Annapolis (southern)

Working in Anne Arundel County?

Waterfront renovations

View all service areasCall: 410-000-0000

Nearby areas

  • Annapolis →
  • Kent Island →
  • Pasadena, MD →
  • Severna Park, MD →

Local proof

Recent work in Anne Arundel County

All projects
  • Mayo Beach Renovation

    Residential · Annapolis, MD

    Mayo Beach Renovation

Ready to talk about your project?

Tell us about your project and our Upper Marlboro team will recommend the right approach — with a free, no-obligation estimate.

Request a free estimateCall: 410-000-0000