Building Permits Maryland New Construction The Maryland Permit Velocity Protocol That Gets Your Construction Documents Approved in the First Review Cycle
The Maryland building permit is the legal document that authorizes construction to begin. It is also the document that most Maryland new construction projects wait too long to apply for, most often submit incompletely on the first attempt, and most consistently underestimate the processing time required in the project schedule. A Montgomery County new construction building permit application submitted 6 weeks before the intended construction start date will not produce a permit in time for that start date; the county’s review process takes 10–18 weeks for complete submissions, and longer for applications that trigger revision cycles. A Carroll County permit submitted with incomplete structural drawings will cycle back to the applicant with a correction letter, adding 3–6 weeks to a process that would have taken 3–5 weeks if the initial submission had been complete.
The Maryland Permit Velocity Protocol is Fortune Homes MD’s approach to minimizing the elapsed time between permit application submission and permit issuance: preparing construction document packages that are complete, accurate, and formatted to the specific submission requirements of the subject county’s building department before the first submission; coordinating the parallel reviews (MDE, WSSC, SHA) that must happen concurrently with the building department review to prevent them from becoming sequential delays; and tracking the permit application through the county’s review system to respond to any reviewer comments within 48–72 hours rather than the weeks that are commonly lost when comments are not noticed until the applicant checks status.
Maryland’s permit velocity is determined almost entirely by the quality of the initial submission. County building reviewers are looking for a specific package of documents, site plan, architectural plans, structural plans, energy compliance documentation, and supporting calculations that are complete, internally consistent (the site plan dimensions match the architectural plan dimensions match the structural plan dimensions), and prepared to the specific format the county requires. A package that is missing a required document, that has inconsistencies between sheets, or that uses an outdated code reference gets a comment letter and then sits in the review queue again for its second pass. Fortune Homes MD’s permit submissions are built to first-cycle approval.
We serve: Baltimore County · Montgomery County · Howard County · Prince George’s County · Anne Arundel County · Frederick County · Carroll County
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What a Maryland New Construction Building Permit Application Must Include
Document / Element | Prepared By | Maryland-Specific Requirements |
Permit application form | Owner/contractor | Each Maryland county has its own permit application form. Montgomery County uses ePlans (electronic submission). Baltimore City uses the AMANDA system. Carroll County accepts paper and PDF submissions. Always use the current form; outdated forms are rejected. |
Site plan (engineered) | Licensed civil engineer or licensed architect | Must show: lot dimensions, all setback distances (front, rear, side verified against zoning district), proposed building footprint dimensions and location, existing and proposed grades, driveway and access, all utilities (water, sewer, electric), stormwater management features, and E&S control locations. Must be drawn to scale with a north arrow and legend. |
Architectural floor plans (all levels) | Licensed architect | All habitable floor plans at minimum 1/4-inch scale. Must show: room dimensions and labels, door and window schedules, stair dimensions and guardrail locations, insulation locations for IECC compliance demonstration, and accessibility features (if applicable). All sheets must be signed and sealed by a Maryland-licensed architect. |
Architectural elevations (all 4 sides) | Licensed architect | Exterior elevations showing all facade materials, window and door openings, roof pitch and ridge height, and finished grade relationship. Required for building height calculation and for Critical Area / historic district review. |
Foundation plan (engineered) | Licensed structural engineer | Foundation type, footing dimensions, reinforcement schedule, bearing capacity assumptions, drainage system design. Maryland frost depth compliance must be demonstrated. Signed and sealed by a Maryland-licensed structural engineer. |
Structural framing plan (engineered) | Licensed structural engineer | Floor framing plan, roof framing plan, beam and header schedule, bearing wall locations, hold-down and shear connection details. Must comply with 2021 IRC span tables or provide engineered design for any non-prescriptive framing. Signed and sealed. |
Energy code compliance documentation (REScheck or equivalent) | Architect or energy analyst | Maryland 2021 IECC Climate Zone 4 compliance must be demonstrated using REScheck or an approved energy compliance pathway. Documentation must show: insulation R-values by assembly (attic, walls, floors, basement/crawl space), fenestration U-values and SHGC, air sealing plan, and HVAC system AFUE/HSPF/SEER ratings. Mechanical ventilation (ERV/HRV) design required under 2021 IECC Section R403.6. |
Mechanical, electrical, plumbing plans (MEP) | MEP engineer or licensed contractors | Required by some Maryland counties for complex projects. For simpler residential projects, some counties accept contractor-prepared plans. Check county-specific requirements Baltimore City and Montgomery County have more stringent MEP documentation requirements than Carroll County and Frederick County. |
Permit fee payment | Owner/contractor | Permit fees are calculated as a percentage of construction value or as a flat fee by project type. Most Maryland counties require fee payment at application submission. Fee ranges: Carroll County $350–$1,800; Montgomery County $1,200–$6,500. Separate fees for building, electrical, plumbing, and mechanical permits in most counties. |
Source: Maryland county building department submission requirements; Fortune Homes MD permit preparation experience; Maryland Board for Professional Engineers and Land Surveyors licensing requirements.
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The Maryland Inspection Sequence 8 Required Inspections in Order
Inspection 1 Footing Inspection (before concrete pour)
The footing inspection is the first field inspection after the building permit is issued and construction begins. The county inspector verifies: footing excavation is at the correct depth (below frost depth 18–24 inches depending on county), footing dimensions match the approved foundation plan, rebar placement and quantity match the structural drawings, and form work is properly prepared for concrete placement.
Critical timing: The footing inspection must be called before concrete is poured once the concrete is placed, the inspector cannot verify the footing depth or reinforcement without coring. Pouring concrete before the footing inspection is approved requires the footing to be demonstrated compliant by destructive testing or may require demolition and replacement. Never pour footings without a passed footing inspection.
Inspection 2 Foundation Inspection (after foundation walls, before backfill)
For crawl space and basement foundations: the foundation wall inspection verifies wall height, dimensions, and reinforcement compliance before the exterior of the wall is backfilled with soil. After backfill, the inspector cannot verify wall reinforcement, waterproofing membrane installation, or drain tile placement without excavation.
For slab foundations: a combined footing and pre-slab inspection verifies the sub-slab gravel bed, vapor retarder, slab edge insulation (R-10 per 2021 IECC), and any under-slab rough-in (radiant tubing, electrical conduit) before the slab is poured.
Inspection 3 Framing Inspection (before insulation and drywall)
The framing inspection is the most comprehensive structural inspection the inspector verifies the entire structural framing system while it is still visible: floor framing connections, wall framing dimensions (stud spacing, header sizing, bearing point locations), roof framing connections, hold-down hardware installation, fire blocking in all required locations, and mechanical, electrical, and plumbing rough-in penetrations through framing.
The framing inspection also verifies: window and door rough opening sizes match the window schedule; stair framing meets 2021 IRC dimensional requirements; guardrail framing blocking is installed at deck and balcony locations; and any non-prescriptive framing elements match the structural engineer’s drawings.
Inspection 4 Rough Mechanical, Electrical, and Plumbing (before insulation)
Rough MEP inspections (conducted simultaneously or in sequence depending on county practice): Electrical rough-in: all electrical rough-in wiring, panel location, grounding system, and service entrance; Plumbing rough-in: all DWV (drain, waste, vent) piping and supply line rough-in, including pressure test of the supply system; Mechanical rough-in: HVAC ductwork layout, gas piping (pressure test required before inspection), heat pump or air handler rough-in, and combustion air openings.
Maryland-specific MEP inspection focus items: 240V circuit for EV charger (increasingly standard and inspected for in new construction); bathroom exhaust fan ductwork terminating at exterior (not in attic a common code violation in Maryland construction); GFCI protection at all required locations (bathrooms, kitchen countertop circuits, exterior outlets, garage).
Inspection 5 Insulation Inspection (before drywall)
The insulation inspection verifies that the thermal envelope of the home meets Maryland’s 2021 IECC Climate Zone 4 requirements: attic insulation R-49 minimum (R-60 Fortune Homes MD standard); wall insulation R-13 continuous + R-5 continuous exterior or R-20 cavity + thermal break; floor insulation over unconditioned space R-30; conditioned basement wall insulation R-15 continuous or R-19 cavity.
Air sealing inspection: The 2021 IECC requires a blower door test at final inspection (maximum 3.0 ACH50 for prescriptive path; 2.0 ACH50 for energy code credit). Maryland inspectors are increasingly requiring air sealing documentation at the insulation inspection, sealed penetrations, gasketed exterior sheathing, and sealed top plates to verify that the blower door test is likely to pass before insulation covers the air barrier.
Inspection 6 Drywall / Wallboard Inspection (fire-rated assemblies)
Not all Maryland counties require a separate drywall inspection but where the building includes fire-rated assemblies (attached garage common wall, multi-family demising walls, stair enclosures), the inspector must verify that the fire-rated drywall (5/8-inch Type X) is correctly installed before it is taped, finished, and painted. A fire-rated assembly that is installed incorrectly cannot be verified after finishing.
Attach garage common wall: The 5/8-inch Type X drywall on the garage side of the common wall must be continuous from floor to ceiling without gaps, penetrations, or non-fire-rated patches. The fire rating is compromised by any gap that allows fire to bypass the rated barrier.
Inspection 7 Blower Door and HVAC Performance Test (2021 IECC)
Maryland’s 2021 IECC requires a blower door test at final or near-final construction to verify that the home’s air leakage rate does not exceed 3.0 ACH50 (air changes per hour at 50 Pascals pressure differential). The blower door test uses a calibrated fan mounted in an exterior door opening to depressurize the home and measure total air leakage. Homes that fail (exceed 3.0 ACH50) must identify and seal additional air leakage locations before retesting.
Fortune Homes MD target: ≤2.0 ACH50 significantly tighter than Maryland’s code minimum, reducing heating and cooling energy costs by 15%–25% over the home’s service life. Achieving this target requires deliberate air sealing at all common penetration locations (electrical boxes, plumbing penetrations, attic hatch, and top plate-to-ceiling drywall interface) throughout construction not as a finishing touch.
Inspection 8 Final Inspection and Certificate of Occupancy
The final inspection covers all remaining work not covered by previous inspections: finish electrical (devices, fixtures, panel dead front), finish plumbing (fixtures, drain trim, water heater), HVAC equipment installation and operational test, smoke and CO detector installation and testing, stair guardrail and baluster installation and compliance, and exterior grading (positive drainage away from foundation, IRC R401.3 minimum 6-inch drop in 10 feet).
Certificate of Occupancy: After all inspections are passed and any corrections from previous inspections are closed, the building department issues the Certificate of Occupancy (CO). The CO is the legal document that authorizes the home to be occupied. No Maryland homeowner or tenant may legally occupy a newly constructed home without a CO mortgage lenders, insurance companies, and settlement companies all require the CO at closing.
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Maryland Permit Fees by County Complete Reference
County | Building Permit Fee | Trade Permit Fees | Fee Calculation Method / Notes |
Baltimore City | $900–$4,500 | $200–$800 each (E, P, M) | Calculated as percentage of construction value. $1.00 per $1,000 construction value (minimum $50) for residential, plus fixed fees for electrical, plumbing, and mechanical. Historic district additional review fee: $200–$600. |
Baltimore County | $600–$3,200 | $150–$600 each | Calculated per square foot of conditioned area + flat fees for trade permits. Typical 2,500 sq ft new home: $800–$1,800 building permit + $450–$900 combined trades. |
Montgomery County | $1,200–$6,500 | $300–$1,200 each | Most expensive permit fees in the service area. Calculated as percentage of construction value (typically 0.5% — 1.2%). $500,000 construction value home = $2,500–$6,000 building permit. Additional DEP review fee: $300–$800. WSSC connection permit: $12,000–$28,000 (separate from building permit). |
Howard County | $700–$3,500 | $200–$700 each | Calculated per square foot plus flat fees. WSSC connection permit in eastern county adds $8,000–$18,000. Efficient fee structure Howard County fees are mid-range for the service area. |
Prince George’s County | $700–$3,000 | $200–$600 each | Calculated as percentage of construction value. WSSC connection permits in most counties add $12,000–$20,000. PG County permit fees are mid-range. |
Anne Arundel County | $650–$3,200 | $150–$600 each | Calculated per square foot of conditioned area. Critical Area development permit: additional $400–$1,200. AACO connection fee for water/sewer: $6,000–$15,000. |
Frederick County | $400–$2,200 | $120–$500 each | Lower fee structure reflects Frederick County’s focus on growth and development. MDE well permit: $200–$400. County health dept septic permit: $400–$800. Overall pre-construction permitting cost is lower than metro counties. |
Carroll County | $350–$1,800 | $100–$400 each | Lowest permit fees in the service area. The Carroll County Office of Planning and Zoning uses a straightforward fee schedule. MDE well and septic permits are the significant pre-construction cost item for most rural Carroll County lots ($800–$3,500 combined). |
FAQs Building Permits Maryland New Construction
Applying for a Maryland new construction building permit involves: (1) Prepare a complete construction document package site plan, architectural drawings, structural drawings, energy compliance documentation, and any required supporting calculations. Most Maryland counties require that drawings be prepared and sealed by licensed Maryland architects and structural engineers; (2) Complete the county’s permit application form (county-specific available on each county’s building department website); (3) Submit the application and documents either online (Montgomery County ePlans, Baltimore City AMANDA), in person, or by mail depending on the county; (4) Pay the permit fee (typically at submission or upon permit issuance); (5) Monitor the review status and respond promptly to any reviewer comments or correction letters. Fortune Homes MD handles the complete permit application process as part of new construction project management including preparing the submission package, submitting to the correct county agency, and tracking review status.
A building permit is the authorization to begin construction; it is issued before construction starts and authorizes the contractor to proceed with the work described in the approved construction documents. A certificate of occupancy (CO) is the authorization to occupy the completed structure; it is issued after all required inspections have been passed and verifies that the completed construction meets all applicable codes. The sequence: building permit issued → construction proceeds through inspection phases → all inspections passed → certificate of occupancy issued → home can be legally occupied. Maryland homeowners cannot legally move into a newly constructed home without a CO, and mortgage lenders, insurance companies, and settlement attorneys typically require a copy of the CO at closing. A temporary CO (TCO) may be issued in some Maryland counties when the home is habitable but minor items remain. Fortune Homes MD achieves final CO status on all projects.
MHIC stands for Maryland Home Improvement Commission, the state agency that licenses home improvement contractors in Maryland under the Maryland Home Improvement Law (Md. Code, Business Regulation Article §8-301 et seq.). An MHIC license is required for any contractor who performs home improvement work including new construction on residential property in Maryland. For building permit purposes, the contractor named on the permit application must hold a current, valid MHIC license. A homeowner applying for their own permit (owner-builder permit) is exempt from MHIC licensing requirements but owner-builder permits are not available for all project types in all Maryland counties, and most mortgage lenders will not close on a new construction loan where the contractor is not MHIC licensed. Fortune Homes MD holds an active MHIC license that is verified at permit application submission in all 7 Maryland counties.
Yes in most Maryland counties, a homeowner can pull an owner-builder permit for construction on their own primary residence. The owner-builder permit allows the homeowner to act as their own general contractor, hiring individual subcontractors for trades (electrical, plumbing, mechanical). However, the homeowner takes on the same responsibilities as a licensed contractor: managing inspections, ensuring code compliance, maintaining workers’ compensation coverage for any paid workers, and being personally liable for any code violations or construction defects. Owner-builder permits are not appropriate for homeowners without construction management experience; the inspection failures, code violations, and timeline overruns that result from inexperienced permit management typically cost more than the contractor markup the homeowner was trying to avoid.
The most common causes of Maryland building permit delays: (1) Incomplete initial submission missing documents, missing architect or engineer seal, incorrect fee payment, or wrong county form cause the application to be returned before review begins; (2) Plan check correction cycles incomplete or inaccurate construction documents that do not comply with 2021 IRC/IECC requirements generate comment letters from the plan reviewer, and each cycle adds 3–8 weeks; (3) Parallel agency reviews WSSC (Montgomery, PG, Howard Counties), SHA (driveway access), MDE (E&S and stormwater), Critical Area review, and CHAP historic review all run on their own timelines and must be completed before the building permit can be issued; (4) Zoning variance if a variance is required, the 2–6 month variance process must complete before the building permit can be issued; (5) Forest Conservation Plan required for lots over 40,000 sq ft with forest coverage, adds 2–4 weeks to the pre-permit review.
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Feature | Details |
Gate | Building Permits Gate 3 of 4 |
Protocol | Permit Velocity: Complete first submission → parallel agency tracking → 48-hr comment response |
Carroll County (fastest) | 3–5 week review | $350–$1,800 fees | Simplest submission requirements |
Montgomery County (slowest) | 10–18 week review | $1,200–$6,500 + DEP + WSSC fees | Multi-agency coordination required |
Required Documents | Site plan (PE sealed) | Arch drawings (AIA sealed) | Structural (PE sealed) | REScheck | MEP plans |
8 Inspections | Footing → Foundation → Framing → Rough MEP → Insulation → Drywall (rated) → Blower Door → Final |
Blower Door Test | 2021 IECC requires ≤3.0 ACH50 | Fortune Homes MD target ≤2.0 ACH50 |
Certificate of Occupancy | All inspections passed → CO issued → Home legally occupied | Required by lenders and insurers |
MHIC License | Required for all Maryland contractor building permits | Fortune Homes MD MHIC licensed |
Pre-Permit Construction | Illegal | Stop-work order + double fee penalty + demolition risk |
Parallel Permits | MDE E&S | MDE well | Health dept septic | SHA driveway | Critical Area | CHAP |
Service Area | 7 Maryland counties county-specific permit submission in all markets |
Phone | (410) 413-0739 |
info@fortunehomesmd.com |