Spotsylvania, VA 55+ active adult communities & homes for sale

555 homes near Spotsylvania

Sort by:

Relevance

5 rating (1 reviews)

Leisure World® of Marylan...

<$100k - $800ks

Leisure World® of Marylan..., Silver Spring, MD

Resale Only | 55+ age-restricted | Built 1966 - 2009 | 5,600 homes

5 rating (2 reviews)

Ford's Colony

$400ks - $2Ms

Ford's Colony, Williamsburg, VA

New and Resale | Age-targeted | Built 1987 - present | 3,250 homes

4.3 rating (15 reviews)

Colonial Heritage

$300ks - $700ks

Colonial Heritage, Williamsburg, VA

New and Resale | 55+ age-restricted | Built 2004 - present | 1,800 homes

5 rating (1 reviews)

The Cottages at Viniterra

$400ks - $900ks

The Cottages at Viniterra, New Kent, VA

New Construction | 55+ age-restricted | Built 2021 - present | 118 homes

2 rating (1 reviews)

Birchwood at Brambleton

$400ks - $1Ms

Birchwood at Brambleton, Ashburn, VA

New and Resale | 55+ age-restricted | Built 2016 - present | 1,502 homes

Want to learn more about 55+ communities in Spotsylvania? 55places can help!

Questions? Call us: (540) 507-2612

Parklands

$300ks - $500ks

Parklands, White Plains, MD

New Construction | 55+ age-restricted | Built 2025 - present | 586 homes

The Flats at Heathcote Vi...

$300ks - $500ks

The Flats at Heathcote Vi..., Haymarket, VA

New Construction | 55+ age-restricted | Built 2026 - present | 500 homes

3.1 rating (7 reviews)

Celebrate

$300ks - $600ks

Celebrate, Fredericksburg, VA

New and Resale | 55+ age-restricted | Built 2008 - present | 1,100 homes

Stags Trail

$500ks - $600ks

Stags Trail, Mechanicsville, VA

New Construction | 55+ age-restricted | Built 2023 - present | 98 homes

Download the Ultimate 55+ Homebuying Guide Whether you’re searching for a 55+ community, downsizing, or exploring other housing options, our free-to-download guide will assist you in finding the ideal home for your needs.

5 rating (2 reviews)

Trilogy® at Lake Frederic...

$400ks - $800ks

Trilogy® at Lake Frederic..., Lake Frederick, VA

New and Resale | 55+ age-restricted | Built 2006 - present | 950 homes

Cameron Grove

$200ks - $400ks

Cameron Grove, Upper Marlboro, MD

Resale Only | 55+ age-restricted | Built 1999 - 2013 | 740 homes

The Governor's Land at Tw...

$600ks - $3Ms

The Governor's Land at Tw..., Williamsburg, VA

New and Resale | Age-targeted | 750 homes

Willow Run

$500ks - $600ks

Willow Run, Winchester, VA

New Construction | 55+ age-restricted | 300 homes

Want to learn more about 55+ communities in Spotsylvania? 55places can help!

Questions? Call us: (540) 507-2612

New Town

$300ks - $800ks

New Town, Williamsburg, VA

New and Resale | Age-targeted | Built 2005 - present | 250 homes

5 rating (3 reviews)

Heritage Hunt

$400ks - $600ks

Heritage Hunt, Gainesville, VA

Resale Only | 55+ age-restricted | Built 1998 - 2009 | 1,863 homes

4.5 rating (12 reviews)

The Groves at New Kent

$300ks - $500ks

The Groves at New Kent, New Kent, VA

New and Resale | 55+ age-restricted | Built 2010 - present | 455 homes

Jordan Crossing

$400ks - $500ks

Jordan Crossing, Midlothian, VA

New Construction | 55+ age-restricted | Built 2019 - present | 65 homes

Four Seasons at Virginia ...

$400ks - $500ks

Four Seasons at Virginia ..., Woodbridge, VA

New Construction | 55+ age-restricted | Built 2021 - present | 185 homes

5 rating (1 reviews)

Greenwich Walk

$300ks - $500ks

Greenwich Walk, Moseley, VA

New and Resale | 55+ age-restricted | Built 2017 - present | 350 homes

Oak Crest Townhomes

$400ks

Oak Crest Townhomes, Mechanicsville, VA

New Construction | 55+ age-restricted | Built 2024 - present | 40 homes

5 rating (2 reviews)

Potomac Green

$400ks - $800ks

Potomac Green, Ashburn, VA

Resale Only | 55+ age-restricted | Built 2005 - 2016 | 1,400 homes

Want to learn more about 55+ communities in Spotsylvania? 55places can help!

Questions? Call us: (540) 507-2612

5 rating (31 reviews)

Lansdowne Woods of Virgin...

$200ks - $500ks

Lansdowne Woods of Virgin..., Lansdowne, VA

Resale Only | 55+ age-restricted | Built 1998 - 2017 | 1,200 homes

The Atrium at MetroWest

$600ks - $700ks

The Atrium at MetroWest, Fairfax, VA

New Construction | 55+ age-restricted | Built 2018 - present | 206 homes

Reserve at Oasis

$400ks - $500ks

Reserve at Oasis, Chesterfield, VA

New Construction | 55+ age-restricted | Built 2024 - present | 200 homes

The Villas at Swift Creek

$400ks - $500ks

The Villas at Swift Creek, Moseley, VA

New Construction | 55+ age-restricted | Built 2023 - present | 194 homes

Walnut Farm

$400ks - $600ks

Walnut Farm, Williamsburg, VA

New Construction | Age-targeted | Built 2019 - present | 75 homes

Cedar Ridge at Piney Orch...

$200ks - $300ks

Cedar Ridge at Piney Orch..., Odenton, MD

Resale Only | 55+ age-restricted | Built 2003 - 2006 | 450 homes

5 rating (1 reviews)

Four Seasons at Historic ...

$400ks - $600ks

Four Seasons at Historic ..., Dumfries, VA

Resale Only | 55+ age-restricted | Built 2002 - 2010 | 801 homes

4.3 rating (3 reviews)

Falls Run

$200ks - $500ks

Falls Run, Fredericksburg, VA

Resale Only | 55+ age-restricted | Built 2002 - 2005 | 781 homes

Mosaic at West Creek

$400ks - $800ks

Mosaic at West Creek, Goochland, VA

New Construction | 55+ age-restricted | Built 2019 - present | 471 homes

Want to learn more about 55+ communities in Spotsylvania? 55places can help!

Questions? Call us: (540) 507-2612

Winchester Landing

$300ks - $400ks

Winchester Landing, Winchester, VA

Resale Only | 55+ age-restricted | Built 2023 - 2025

Lake Margaret at the High...

$500ks - $700ks

Lake Margaret at the High..., Chesterfield, VA

New Construction | 55+ age-restricted | Built 2023 - present | 62 homes

ThreeOaks™

$700ks

ThreeOaks™, Culpeper, VA

New Construction | 55+ age-restricted | Built 2024 - present | 268 homes

Woolridge Landing

$500ks

Woolridge Landing, Moseley, VA

New Construction | 55+ age-restricted | Built 2021 - present | 165 homes

5 rating (1 reviews)

Rock Creek Villas

$300ks - $400ks

Rock Creek Villas, Quinton, VA

New and Resale | 55+ age-restricted | Built 2009 - present | 60 homes

5 rating (1 reviews)

Regency at Dominion Valle...

$300ks - $1Ms

Regency at Dominion Valle..., Haymarket, VA

Resale Only | 55+ age-restricted | Built 2001 - 2017 | 855 homes

4.4 rating (5 reviews)

Virginia Heritage at Lee'...

$300ks - $500ks

Virginia Heritage at Lee'..., Fredericksburg, VA

Resale Only | 55+ age-restricted | Built 2005 - 2021 | 795 homes

Four Seasons at Charlotte...

$400ks - $600ks

Four Seasons at Charlotte..., Ruckersville, VA

Resale Only | 55+ age-restricted | Built 2005 - present | 275 homes

Want to learn more about 55+ communities in Spotsylvania? 55places can help!

Questions? Call us: (540) 507-2612

5 rating (1 reviews)

Two Rivers

$500ks - $700ks

Two Rivers, Odenton, MD

New and Resale | 55+ age-restricted | Built 2015 - present | 800 homes

Liberty Trace

$300ks

Liberty Trace, Mechanicsville, VA

Resale Only | 55+ age-restricted | Built 2008 - 2016 | 75 homes

1 2 3...4

New Abrams Chase

105 AMBERFIELD CT, WINCHESTER, VA, 22602, Winchester, VA 22602

$529,900

2 beds

2 baths

1,800 sq ft

105 AMBERFIELD CT, WINCHESTER, VA, 22602

Community: Abrams Chase

New Leisure World® of Maryland

3005 S LEISURE WORLD BLVD APT 702, SILVE..., Silver Spring, MD 20906

$279,900

2 beds

2 baths

1,093 sq ft

Condo

3005 S LEISURE WORLD BLVD APT 702, SILVE...

Community: Leisure World® of Maryland

New Two Rivers

2705 DRAGON FLY WAY, ODENTON, MD, 21113, Odenton, MD 21113

$786,000

3 beds

3 baths

3,456 sq ft

2705 DRAGON FLY WAY, ODENTON, MD, 21113

Community: Two Rivers

New Dunbarton

9513 MOONEN BAY LN, BRISTOW, VA, 20136, Bristow, VA 20136

$650,000

4 beds

3 baths

2,711 sq ft

9513 MOONEN BAY LN, BRISTOW, VA, 20136

Community: Dunbarton

New Heritage Hunt

6595 ALDERWOOD WAY, GAINESVILLE, VA, 201..., Gainesville, VA 20155

$625,000

3 beds

3 baths

2,311 sq ft

6595 ALDERWOOD WAY, GAINESVILLE, VA, 201...

Community: Heritage Hunt

Want to learn more about 55+ communities in Spotsylvania? 55places can help!

Questions? Call us: (540) 507-2612

New Central Parke at Victoria Falls

13218 WINDING TRAIL RD, LAUREL, MD, 2070..., Laurel, MD 20707

$470,000

3 beds

3 baths

1,464 sq ft

13218 WINDING TRAIL RD, LAUREL, MD, 2070...

Community: Central Parke at Victoria Falls

New Villas at Providence

1811 PROVIDENCE VILLAS CT, NORTH CHESTER..., North Chesterfield, VA 23236

$440,000

3 beds

2 baths

1,876 sq ft

Condo

1811 PROVIDENCE VILLAS CT, NORTH CHESTER...

Community: Villas at Providence

New Leisure World® of Maryland

15115 INTERLACHEN DR 3-425, SILVER SPRIN..., Silver Spring, MD 20906

$185,000

1 beds

1 baths

945 sq ft

Condo

15115 INTERLACHEN DR 3-425, SILVER SPRIN...

Community: Leisure World® of Maryland

New Four Seasons at Historic Virginia

3839 MULBERRY POINT CT, DUMFRIES, VA, 22..., Dumfries, VA 22025

$640,950

4 beds

3 baths

3,424 sq ft

3839 MULBERRY POINT CT, DUMFRIES, VA, 22...

Community: Four Seasons at Historic Virginia

New The Cottages at Viniterra

9156 TERROIR LN, NEW KENT, VA, 23124, New Kent, VA 23124

$999,900

4 beds

3 baths

3,397 sq ft

House

9156 TERROIR LN, NEW KENT, VA, 23124

Community: The Cottages at Viniterra

New Falls Run

4 COVINGTON DR, FREDERICKSBURG, VA, 2240..., Fredericksburg, VA 22406

$490,000

3 beds

3 baths

2,704 sq ft

4 COVINGTON DR, FREDERICKSBURG, VA, 2240...

Community: Falls Run

New Maple Highlands

12194 NICOLAR DR, FULTON, MD, 20759, Fulton, MD 20759

$1,141,816

2 beds

4 baths

4,186 sq ft

Condo

12194 NICOLAR DR, FULTON, MD, 20759

Community: Maple Highlands

New Ford's Colony

117 CONGRESSIONAL, WILLIAMSBURG, VA, 231..., Williamsburg, VA 23188

$779,000

4 beds

4 baths

3,537 sq ft

Detached

117 CONGRESSIONAL, WILLIAMSBURG, VA, 231...

Community: Ford's Colony

Want to learn more about 55+ communities in Spotsylvania? 55places can help!

Questions? Call us: (540) 507-2612

New Legacy Woods

6611 TWIN CEDARS CT, FREDERICKSBURG, VA,..., Fredericksburg, VA 22407

$435,000

3 beds

2 baths

1,691 sq ft

6611 TWIN CEDARS CT, FREDERICKSBURG, VA,...

Community: Legacy Woods

New Ford's Colony

113 STRATTON, WILLIAMSBURG, VA, 23188, Williamsburg, VA 23188

$899,000

4 beds

4 baths

3,982 sq ft

Detached

113 STRATTON, WILLIAMSBURG, VA, 23188

Community: Ford's Colony

New Falls Run

291 BRIDGEWATER CIR, FREDERICKSBURG, VA,..., Fredericksburg, VA 22406

$375,000

2 beds

2 baths

1,202 sq ft

291 BRIDGEWATER CIR, FREDERICKSBURG, VA,...

Community: Falls Run

New Ford's Colony

102 SWINLEY FRST, WILLIAMSBURG, VA, 2318..., Williamsburg, VA 23188

$1,025,000

5 beds

4 baths

4,366 sq ft

Detached

102 SWINLEY FRST, WILLIAMSBURG, VA, 2318...

Community: Ford's Colony

New Mosaic at West Creek

9208 CERULEAN PL, RICHMOND, VA, 23238, Richmond, VA 23238

$687,000

3 beds

3 baths

2,338 sq ft

Townhouse

9208 CERULEAN PL, RICHMOND, VA, 23238

Community: Mosaic at West Creek

New Hawthorne Greene

56 CAMDEN CIR, LA PLATA, MD, 20646, La Plata, MD 20646

$387,000

2 beds

2 baths

1,485 sq ft

56 CAMDEN CIR, LA PLATA, MD, 20646

Community: Hawthorne Greene

New Ford's Colony

105 SCOTSCRAIG, WILLIAMSBURG, VA, 23188, Williamsburg, VA 23188

$749,900

4 beds

4 baths

2,700 sq ft

Detached

105 SCOTSCRAIG, WILLIAMSBURG, VA, 23188

Community: Ford's Colony

New Leisure World® of Maryland

15115 INTERLACHEN DR 3-815, SILVER SPRIN..., Silver Spring, MD 20906

$199,000

2 beds

2 baths

1,115 sq ft

Condo

15115 INTERLACHEN DR 3-815, SILVER SPRIN...

Community: Leisure World® of Maryland

Want to learn more about 55+ communities in Spotsylvania? 55places can help!

Questions? Call us: (540) 507-2612

New Regency at Dominion Valley

15251 ROYAL CREST DR APT 103, HAYMARKET,..., Haymarket, VA 20169

$455,000

2 beds

2 baths

1,499 sq ft

Condo

15251 ROYAL CREST DR APT 103, HAYMARKET,...

Community: Regency at Dominion Valley

New Suffield Meadows

6696 CLUB HOUSE LN UNIT 206, WARRENTON, ..., Warrenton, VA 20187

$375,000

2 beds

2 baths

1,372 sq ft

Condo

6696 CLUB HOUSE LN UNIT 206, WARRENTON, ...

Community: Suffield Meadows

New Oak Crest Townhomes

7679 LLOYD TER, MECHANICSVILLE, VA, 2311..., Mechanicsville, VA 23111

$460,740

3 beds

3 baths

1,960 sq ft

Condo

7679 LLOYD TER, MECHANICSVILLE, VA, 2311...

Community: Oak Crest Townhomes

New Oak Crest Townhomes

7675 LLOYD TER, MECHANICSVILLE, VA, 2311..., Mechanicsville, VA 23111

$470,740

3 beds

3 baths

1,960 sq ft

Condo

7675 LLOYD TER, MECHANICSVILLE, VA, 2311...

Community: Oak Crest Townhomes

New Leisure World® of Maryland

15000 EARDLEY CT # 282-A, SILVER SPRING,..., Silver Spring, MD 20906

$199,000

2 beds

3 baths

1,359 sq ft

Condo

15000 EARDLEY CT # 282-A, SILVER SPRING,...

Community: Leisure World® of Maryland

New Ford's Colony

209 W KILBRIDE, WILLIAMSBURG, VA, 23188, Williamsburg, VA 23188

$789,000

4 beds

3 baths

3,625 sq ft

Detached

209 W KILBRIDE, WILLIAMSBURG, VA, 23188

Community: Ford's Colony

New Potomac Green

20687 GOLDEN RIDGE DR, ASHBURN, VA, 2014..., Ashburn, VA 20147

$855,000

3 beds

3 baths

2,404 sq ft

20687 GOLDEN RIDGE DR, ASHBURN, VA, 2014...

Community: Potomac Green

New Ford's Colony

104 WOLF CRK, WILLIAMSBURG, VA, 23188, Williamsburg, VA 23188

$875,000

4 beds

4 baths

3,450 sq ft

Detached

104 WOLF CRK, WILLIAMSBURG, VA, 23188

Community: Ford's Colony

New CrossRidge

3528 GWYNNS PL, GLEN ALLEN, VA, 23060, Glen Allen, VA 23060

$545,000

3 beds

3 baths

2,336 sq ft

Townhouse

3528 GWYNNS PL, GLEN ALLEN, VA, 23060

Community: CrossRidge

Want to learn more about 55+ communities in Spotsylvania? 55places can help!

Questions? Call us: (540) 507-2612

New Four Seasons at Virginia Crossing

13970 ENGLEFIELD DR UNIT 404, WOODBRIDGE..., Woodbridge, VA 22193

$460,000

2 beds

2 baths

1,437 sq ft

Condo

13970 ENGLEFIELD DR UNIT 404, WOODBRIDGE...

Community: Four Seasons at Virginia Crossing

New Birchwood at Brambleton

23626 JAYADEV TER, ASHBURN, VA, 20148, Ashburn, VA 20148

$925,000

3 beds

3 baths

2,906 sq ft

23626 JAYADEV TER, ASHBURN, VA, 20148

Community: Birchwood at Brambleton

New Leisure World® of Maryland

15100 INTERLACHEN DR # 4-407, SILVER SPR..., Silver Spring, MD 20906

$389,900

3 beds

3 baths

1,530 sq ft

Condo

15100 INTERLACHEN DR # 4-407, SILVER SPR...

Community: Leisure World® of Maryland

Two Rivers

1534 CATBRIAR WAY, ODENTON, MD, 21113, Odenton, MD 21113

$850,000

3 beds

3 baths

3,780 sq ft

1534 CATBRIAR WAY, ODENTON, MD, 21113

Community: Two Rivers

The Governor's Land at Two Rivers

2801 LAWNES CREEK RD, WILLIAMSBURG, VA, ..., Williamsburg, VA 23185

$695,000

3 beds

3 baths

3,228 sq ft

Detached

2801 LAWNES CREEK RD, WILLIAMSBURG, VA, ...

Community: The Governor's Land at Two Rivers

The Villages at Nahor

113 MULBERRY DR, PALMYRA, VA, 22963, Palmyra, VA 22963

$515,000

3 beds

3 baths

2,743 sq ft

113 MULBERRY DR, PALMYRA, VA, 22963

Community: The Villages at Nahor

Leisure World® of Maryland

15316 PINE ORCHARD DR 82-2H, SILVER SPRI..., Silver Spring, MD 20906

$199,999

2 beds

2 baths

1,043 sq ft

Condo

15316 PINE ORCHARD DR 82-2H, SILVER SPRI...

Community: Leisure World® of Maryland

Leisure World® of Maryland

15115 INTERLACHEN DR 3-716, SILVER SPRIN..., Silver Spring, MD 20906

$175,000

1 beds

1 baths

850 sq ft

Condo

15115 INTERLACHEN DR 3-716, SILVER SPRIN...

Community: Leisure World® of Maryland

Want to learn more about 55+ communities in Spotsylvania? 55places can help!

Questions? Call us: (540) 507-2612

Leisure World® of Maryland

3200 N LEISURE WORLD BLVD 519, SILVER SP..., Silver Spring, MD 20906

$399,900

2 beds

2 baths

1,490 sq ft

Condo

3200 N LEISURE WORLD BLVD 519, SILVER SP...

Community: Leisure World® of Maryland

Celebrate

15 POINT BLUFF ST, FREDERICKSBURG, VA, 2..., Fredericksburg, VA 22406

$469,000

3 beds

2 baths

1,502 sq ft

15 POINT BLUFF ST, FREDERICKSBURG, VA, 2...

Community: Celebrate

1 2 3 4 5 6 7 8 9 10 11 12 13…14

Frequently Asked Questions

What size 55+ communities are there in Spotsylvania?

In Spotsylvania, there are no large communities, no medium communities, and 2 small communities with less than 500 homes.

How many homes are there in the smallest, largest, and average 55+ communities in Spotsylvania?

The smallest 55+ communities in Spotsylvania has 38 homes, the largest has 84 homes, and the average communities consists of 61 homes.

Are there new 55+ homes available in Spotsylvania?

Yes, there is new 55+ home available in Spotsylvania. The most recent communities started in Spotsylvania include Keswick Villas, Mill Creek. There is also 1 communities in Spotsylvania that offers new construction homes, including Keswick Villas.

Are there gated 55+ communities in Spotsylvania?

No, there are no gated 55+ communities in Spotsylvania.

How long do listings in 55+ communities in Spotsylvania typically stay on the market, and what is the average price of homes for sale?

On average, listings in 55+ communities in Spotsylvania stay on the market for around 434 days. The average price of homes for sale in these communities is approximately $512,006, though prices can range widely based on the size, location, and amenities of the communities. For example, homes in Keswick Villas average around $589,013, while homes in Mill Creek average around $435,000.

Fredericksburg Area 55+ Housing Market Trends

Trend Shown:

Number of Listings

Fredericksburg Area 55+ Housing Market Trends

Want more information about active adult communities around Spotsylvania?

Global - Lead Form - Buyer or Renter

First Name

Last Name

Phone/Mobile

Text

I'm looking to:

Rent

Buy

*55places does not provide or maintain community HOA information.

Yes, I want to subscribe to email updates from 55places.com, including newsletters, community announcements, and more.

I agree to receive SMS messages to connect me with a local expert.

By requesting more information, you agree that 55places may call, text, or email you about your inquiry, which may be made with automated means (including recorded voice messages, SMS, or text messages). You understand that your consent is not a prerequisite for buying, selling or renting a property. You may revoke your consent at any time by contacting [email protected]. Message/data rates may apply. You also agree to 55places.com’s Privacy Policy and Terms of Use.

Want to learn more about 55+ communities in Spotsylvania?

Call us: (540) 507-2612

555 homes

Remove Boundaries ×

Map Satellite

The listings data displayed on this medium comes in part from the Real Estate Information Network Inc. (REIN) and has been authorized by participating listing Broker Members of REIN for display. REIN's listings are based upon Data submitted by its Broker Members, and REIN therefore makes no representation or warranty regarding the accuracy of the Data. All users of REIN's listings database should confirm the accuracy of the listing information directly with the listing agent.
© 2026 REIN. REIN's listings Data and information is protected under federal copyright laws. Federal law prohibits, among other acts, the unauthorized copying or alteration of, or preparation of derivative works from, all or any part of copyrighted materials, including certain compilations of Data and information. COPYRIGHT VIOLATORS MAY BE SUBJECT TO SEVERE FINES AND PENALTIES UNDER FEDERAL LAW.
REIN updates its listings on a daily basis. Data last updated: Feb 24, 2026.
This application does not include information on all of the properties available for sale at this time.

Call Us Call Us

Spotsylvania, VA 55+ active adult communities & homes for sale

144 communities near Spotsylvania

555 homes near Spotsylvania

2 beds

2 baths

1,800 sq ft

2 beds

2 baths

1,093 sq ft

Condo

3 beds

3 baths

3,456 sq ft

4 beds

3 baths

2,711 sq ft

3 beds

3 baths

2,311 sq ft

3 beds

3 baths

1,464 sq ft

3 beds

2 baths

1,876 sq ft

Condo

1 beds

1 baths

945 sq ft

Condo

4 beds

3 baths

3,424 sq ft

4 beds

3 baths

3,397 sq ft

House

3 beds

3 baths

2,704 sq ft

2 beds

4 baths

4,186 sq ft

Condo

4 beds

4 baths

3,537 sq ft

Detached

3 beds

2 baths

1,691 sq ft

4 beds

4 baths

3,982 sq ft

Detached

2 beds

2 baths

1,202 sq ft

5 beds

4 baths

4,366 sq ft

Detached

3 beds

3 baths

2,338 sq ft

Townhouse

2 beds

2 baths

1,485 sq ft

4 beds

4 baths

2,700 sq ft

Detached

2 beds

2 baths

1,115 sq ft

Condo

2 beds

2 baths

1,499 sq ft