Mon – Fri: 8:00 – 5:00

Enjoy your yard! Let Brennan's handle the work.

Hardscape Design

Hardscape Design

Hardscapes are the easy choice when it comes to beautifying your outdoor space.

Landscape Design

Landscape Design

From drab to fab, our landscaping design services can wake up a tired yard.

Grading and Drainage

Grading and Drainage

Water water everywhere - it's supposed to be with our NPS certified drainage.

Lawn Mowing in Manassas, Virginia by Brennan's Landscaping

Lawn Mowing

Lawn Mowing in Manassas, Virginia by Brennan's Landscaping

Lawn Mowing

Hate mowing? Well, great news - at Brennan's Landscaping, we love it.

If it’s outdoors - we probably mow it, trim it, or prune it. From removing loose debris to edging plant beds, pruning shrubs, and just about everything in between, we’ve got the solution for all of your outdoor needs.
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5-Star Reviews


Gnomes Wrestled


Trees Planted


Happy Clients

Why Choose Us?

Highly Rated

Your neighbors love us and our dependable lawn care. Let Brennan’s show you why.

Honest and Dependable

We don’t like to brag, but we’re known for our amazing service & more amazing lawn care.

NDS Certified

Water matters and we make sure it matters when it comes to your lawn.

People Love Us

Check out our slew of 5-star reviews from lawn happy people just like you!

Licensed & Insured

We made sure to take the necessary steps to protect you and your home.

We Give Back

We love partnering with local charities! Have one you love? Let us know!

Frequently Asked Questions

We service all of Northern Virginia! Wonder if you fall in there? Give us a call at (571) 330-2659!

Brennan’s Landscaping would like to thank all of our veteran clients with a 10% discount on most landscape projects! Just ask for it!

We have a pretty fast turnaround time on most services. Give us a call and let’s discuss your project!

Check, Cash, Credit, Bank Transfer – we make our billing as convenient as our lawn care services. Questions? Just ask.

Yes – of course. We allow cancellations of your lawn contracts with a 30-day notice – so give us a little heads up before we send our guys back out.

Get your Quote

    Customer Feedback

    I highly recommend Brennan's

    We first contracted with Brennan's last spring. Our yard was overrun with weeds -- dandelions, clover, you name it -- and there were many bare patches throughout the lawn. Brennan's fertilized and treated our yard for weeds last spring, and he fertilized and seeded our yard last fall. When I mowed our yard yesterday, I noticed that our grass was thicker and greener. It feels like I am walking on a plush carpet!! Brennan's has also weeded and mulched our flower beds each spring. I highly recommend Brennan's for all of your landscaping needs!!

    Cindy W.

    We are so impressed

    We are so impressed with this landscaping company! They are hard workers, great communicators and did all the work we’ve given them so far in a quality and timely manner. We are very loyal folk, so these guys will now be our go-to landscaping company for any work we can’t do ourselves.

    Joy P.

    We LOVE these guys!

    We LOVE these guys! From the second we requested a quote, it has been nothing but professional, fast and easy communication. The work is beautiful and always right on time. The prices are fair, and they always get right back to me when I call or text, which is very important to me. We have only been using them a short time, and they have already gone above and beyond to help us with all of our lawn care needs. I would give them 10 stars if I could!

    Katie K.

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    Meet Our Team

    Thomas Brennan


    I like my lawns how I like my hair - well trimmed. Hey! I'm Tom, Thomas, but definitely not Tommy. I run the show here at Brennan's.

    Stacey Cartright

    Office Manager

    Paperwork, filing, customer service - oh my. Stacey keeps the wheels greased at Brennan's Landscaping as well as making us look pretty.

    Mark Stevens


    If Brennan's is doing your lawn care, Mark is at your house, in your garden, pulling your weeds, and keepin' it green.

    Read our Reviews

    Do your research! Hiring a landscaping company is a “lawn-term” commitment.
    Click on one of the review logos below to be taken to our review profiles!