Fairfax County and Loudoun County First-Time Home Buyer Programs

First-time buyers in Fairfax and Loudoun counties face some of the highest median home prices in the entire state — and some of the most competitive markets in the mid-Atlantic. Local assistance programs exist, but they work differently than standard cash grants. Understanding exactly what's available, who qualifies, and how these programs interact with Virginia Housing assistance can determine whether homeownership in Northern Virginia is achievable right now or requires more preparation.

Fairfax County First-Time Homebuyers Program

Fairfax County's first-time buyer program doesn't hand out cash — it provides access to Affordable Dwelling Units (ADUs). These are homes built by private developers as a condition of county inclusionary zoning requirements, offered at prices set well below what the open market would bear.

How it works: When developers receive approval for new residential projects in Fairfax, county ordinances require a percentage of units to be set aside as ADUs. The county manages a waiting list of income-eligible first-time buyers and grants them the right to purchase these units before they enter the general market.

Eligibility requirements:

• First-time homebuyer (no ownership interest in a principal residence in the past three years)
• Household income at or below specific AMI thresholds — the qualifying limit is approximately $114,750 for a family of four at 70% Area Median Income (AMI) in 2026
• Must use the property as a primary residence
• May not own investment property

What you actually get: Access to purchase a home at a price substantially below market. In practice, this means a new townhome or condominium in a competitive Fairfax submarket at a price 20–40% below what similar units trade for on the open market. The subsidy isn't paid to you — it's embedded in the below-market purchase price, which is locked by covenant.

The challenge: You have no control over which unit becomes available or when. ADU availability depends entirely on developer timelines and the volume of eligible applicants ahead of you on the waiting list. This program rewards patience, not urgency.

To apply, contact Fairfax County's Department of Housing and Community Development directly. Get on the waiting list early — the application process itself takes time, and active ADU inventory is limited.

Virginia Housing Programs Available in Fairfax and Loudoun

Both counties sit within the Washington/Arlington/Alexandria MSA for Virginia Housing income limit purposes, giving buyers access to the highest income thresholds in the state:

Virginia Housing DPA Grant (2026 limits for Washington/Arlington/Alexandria MSA):

• 1-2 person household: $148,000 income limit
• 3+ person household: $160,000 income limit
• Maximum sales price: $800,000

These limits cover a meaningful portion of Fairfax and Loudoun buyers, particularly those with dual incomes but limited savings. The DPA Grant is a true no-repayment grant paired with a Virginia Housing first mortgage.

Virginia Housing Plus Second Mortgage: Available at higher income thresholds than the DPA Grant, making it accessible to buyers who earn slightly too much for the grant but still lack a full down payment. A 680+ credit score unlocks a 5% second mortgage that covers the down payment plus a portion of closing costs.

Loudoun County-specific context: Loudoun's median home price exceeds $774,000 — already above the Virginia Housing sales price cap of $800,000 for the DPA Grant. This means Loudoun buyers need to target properties at the lower end of the market (townhomes, condominiums, or homes in Purcellville and Leesburg's less expensive areas) to remain within program limits. At $774,000 median, there's a narrow window.

Arlington County MIPAP (Adjacent to Fairfax)

If your job search puts you anywhere near the Arlington/Alexandria border, Arlington County's Moderate Income Purchase Assistance Program (MIPAP) is worth understanding. It provides an interest-free deferred second mortgage covering up to 25% of the purchase price (maximum $112,500) for homes priced up to $500,000. Income limit: $132,880 for a family of four (2026).

MIPAP uses shared appreciation — when you sell or refinance, you repay the original loan plus a proportionate share of the home's price appreciation. This structure keeps the program's capital revolving rather than depleting.

Prince William County: The Practical Alternative

Many buyers who begin their search in Fairfax or Loudoun ultimately end up in Prince William County. At a median price around $456,000, Prince William puts homeownership within reach for a broader range of incomes and down payments.

Prince William County's First-Time Homebuyer (FTHB) program uses federal HOME funds to provide closing cost and down payment assistance for buyers below 80% AMI in Prince William County, the City of Manassas, and Manassas Park. This is a cash-based program, not an ADU access program, making it more straightforward to use in a standard market transaction.

Prince William also offers the easiest access to Virginia Housing programs given its lower median prices — buyers have more headroom below the $800,000 sales price cap, and more listings compete within the income-qualifying range.

NOVA Closing Costs: What Fairfax and Loudoun Buyers Pay Extra

Both Fairfax and Loudoun fall within the Northern Virginia Transportation Authority (NVTA) footprint, meaning buyers face the Regional Congestion Relief Fee and WMATA Capital Fee on top of standard Virginia closing costs. This adds approximately $0.20 per $100 of the purchase price in combined regional fees — an additional $1,000–$1,500 on a $600,000–$750,000 purchase. These fees are often contractually shifted to the buyer in competitive markets despite the seller being the statutory responsible party.

Request an itemized Loan Estimate from your lender early, and confirm that these regional fees are included. Out-of-state or national lenders sometimes omit them, producing a Closing Disclosure three days before settlement that's materially higher than what you budgeted.

Stacking Local and State Assistance

Virginia Housing explicitly allows its DPA Grant to be layered with local municipal programs. Fairfax County's ADU program is separate and doesn't stack, but Prince William County's FTHB cash assistance can be paired with Virginia Housing funds if the buyer qualifies for both and works with a Virginia Housing-approved lender.

For the complete picture of Northern Virginia's contract landscape — NVAR contract timelines, the independent city tax structure, and the full closing process — the Virginia First-Time Home Buyer Guide is built around these regional realities.

See more Virginia guides →